{"type": "FeatureCollection", "features": [{"id": "10.1029/2018wr024408", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:18:16Z", "type": "Journal Article", "created": "2019-10-23", "title": "Data Assimilation and Online Parameter Optimization in Groundwater Modeling Using Nested Particle Filters", "description": "Abstract

Over the past decades, advances in data collection and machine learning have paved the way for the development of autonomous simulation frameworks. Among these, many are capable not only of assimilating real\uffe2\uff80\uff90time data to correct their predictive shortcomings but also of improving their future performance through self\uffe2\uff80\uff90optimization. In hydrogeology, such techniques harbor great potential for informing sustainable management practices. Simulating the intricacies of groundwater flow requires an adequate representation of unknown, often highly heterogeneous geology. Unfortunately, it is difficult to reconcile the structural complexity demanded by realistic geology with the simplifying assumptions introduced in many calibration methods. The particle filter framework would provide the necessary versatility to retain such complex information but suffers from the curse of dimensionality, a fundamental limitation discouraging its use in systems with many unknowns. Due to the prevalence of such systems in hydrogeology, the particle filter has received little attention in groundwater modeling so far. In this study, we explore the combined use of dimension\uffe2\uff80\uff90reducing techniques and artificial parameter dynamics to enable a particle filter framework for a groundwater model. Exploiting freedom in the design of the dimension\uffe2\uff80\uff90reduction approach, we ensure consistency with a predefined geological pattern. The performance of the resulting optimizer is demonstrated in a synthetic test case for three such geological configurations and compared to two Ensemble Kalman Filter setups. Favorable results even for deliberately misspecified settings make us hopeful that nested particle filters may constitute a useful tool for geologically consistent real\uffe2\uff80\uff90time parameter optimization.Despite the global significance of the subsurface biosphere, the degree to which it depends on surface organic carbon (OC) is still poorly understood. Here, we compare stable and radiogenic carbon isotope compositions of microbial phospholipid fatty acids (PLFAs) with those of in situ potential microbial C sources to assess the major C sources for subsurface microorganisms in biogeochemical distinct shallow aquifers (Critical Zone Exploratory, Thuringia Germany). Despite the presence of younger OC, the microbes assimilated 14C\uffe2\uff80\uff90free OC to varying degrees; ~31% in groundwater within the oxic zone, ~47% in an iron reduction zone, and ~70% in a sulfate reduction/anammox zone. The persistence of trace amounts of mature and partially biodegraded hydrocarbons suggested that autochthonous petroleum\uffe2\uff80\uff90derived hydrocarbons were a potential 14C\uffe2\uff80\uff90free C source for heterotrophs in the oxic zone. In this zone, \uffce\uff9414C values of dissolved inorganic carbon (\uffe2\uff88\uff92366\uffc2\uffa0\uffc2\uffb1\uffc2\uffa018\uffe2\uff80\uffb0) and 11MeC16:0 (\uffe2\uff88\uff92283\uffc2\uffa0\uffc2\uffb1\uffc2\uffa032\uffe2\uff80\uffb0), an important component in autotrophic nitrite oxidizers, were similar enough to indicate that autotrophy is an important additional C fixation pathway. In anoxic zones, methane as an important C source was unlikely since the 13C\uffe2\uff80\uff90fractionations between the PLFAs and CH4 were inconsistent with kinetic isotope effects associated with methanotrophy. In the sulfate reduction/anammox zone, the strong 14C\uffe2\uff80\uff90depletion of 10MeC16:0 (\uffe2\uff88\uff92942\uffc2\uffa0\uffc2\uffb1\uffc2\uffa022\uffe2\uff80\uffb0), a PLFA common in sulfate reducers, indicated that those bacteria were likely to play a critical part in 14C\uffe2\uff80\uff90free sedimentary OC cycling. Results indicated that the 14C\uffe2\uff80\uff90content of microbial biomass in shallow sedimentary aquifers results from complex interactions between abundance and bioavailability of naturally occurring OC, hydrogeology, and specific microbial metabolisms.

", "keywords": ["0301 basic medicine", "2. Zero hunger", "0303 health sciences", "assimilation", "Environmental Engineering", "Environmental engineering", "Geology", "subsurface", "15. Life on land", "Civil Engineering", "Physical Geography and Environmental Geoscience", "6. Clean water", "03 medical and health sciences", "Geochemistry", "13. Climate action", "C cycling", "Earth Sciences", "radiocarbon", "PLFA", "microbial function", "Civil engineering", "Hydrology", "Research Articles"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2017WR022067"}, {"href": "https://escholarship.org/content/qt28c3v5mf/qt28c3v5mf.pdf"}, {"href": "https://doi.org/10.1029/2017wr022067"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Resources%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2017wr022067", "name": "item", "description": "10.1029/2017wr022067", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2017wr022067"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-03-01T00:00:00Z"}}, {"id": "10.1016/j.ejsobi.2013.08.005", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:16:34Z", "type": "Journal Article", "created": "2013-08-30", "title": "The Earthworm Species Metaphire Posthuma Modulates The Effect Of Organic Amendments (Compost Vs. Vermicompost From Buffalo Manure) On Soil Microbial Properties. A Laboratory Experiment", "description": "The aim of this study was to determine the influence of compost and vermicompost produced from buffalo manure on soil bacterial diversity and activity in the presence and absence of the endogeic earthworm Metaphire posthuma. This experiment was carried out for 15 months with a maize- tomato emaize cycle under greenhouse conditions in Northern Vietnam. It showed a positive influence of compost and vermicompost on soil microbial properties, with higher cultivable bacteria, higher bacterial and catabolic diversity (Shannon diversity 'H' and Richness 'S') indices and higher enzymatic activities than control soils which only received mineral fertilizers. Differences also occurred between compost and vermicompost with lower activity and diversity in the soil amended with vermicompost, probably because of its higher molecular stability. The presence of M. posthuma led to divergent dynamics of bacterial community in soils amended with compost and vermicompost. Earthworms negatively influenced soil microbial properties in composted soil (lower Average Well Color Development 'AWCD'), probably because of competition between bacteria and earthworms for organic resources and/or because of the consumption of microbes by earthworms. Conversely, the presence of earthworms increased bacterial diversity and activity with higher AWCD, and H and S indices for the vermicompost treatment, probably as a result of a stimulation of microorganisms that allow the degradation of stable organic matter and its further consumption by earthworms. In conclusion, this study clearly confirmed the different impacts of compost and vermicompost on bacterial activity and diversity and highlighted the importance considering the interaction of these organic substrates with local endogeic earthworms.", "keywords": ["2. Zero hunger", "[SDE.IE]Environmental Sciences/Environmental Engineering", "MICROBIOLOGIE DU SOL", "Enzymatic activities", "SOL CULTIVE", "MATIERE ORGANIQUE", "Metaphire posthuma", "Organic fertilization", "04 agricultural and veterinary sciences", "15. Life on land", "630", "333", "6. Clean water", "ACTIVITE ENZYMATIQUE", "13. Climate action", "FERTILISATION DU SOL", "0401 agriculture", " forestry", " and fisheries", "Biolog analysis", "[SDE.IE] Environmental Sciences/Environmental Engineering", "DGGE", "Tropical soil", "LOMBRIC", "COMPOST"]}, "links": [{"href": "https://doi.org/10.1016/j.ejsobi.2013.08.005"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Soil%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ejsobi.2013.08.005", "name": "item", "description": "10.1016/j.ejsobi.2013.08.005", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ejsobi.2013.08.005"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-11-01T00:00:00Z"}}, {"id": "10.1039/c9ew00220k", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:18:31Z", "type": "Journal Article", "created": "2019-04-29", "title": "Long-term performance evaluation of an anoxic sulfur oxidizing moving bed biofilm reactor under nitrate limited conditions", "description": "

An anoxic sulfur-oxidizing moving bed biofilm reactor (MBBR) treating sulfur and nitrate-contaminated synthetic wastewater was monitored for 306 days under feed nitrogen-to-sulfur (N/S) molar ratios of 0.5, 0.3 and 0.1.

", "keywords": ["Aurora Universities Network", "570", "Horizon 2020", "EC", "Environmental Engineering", "218 Environmental engineering", "116 Chemical sciences", "H2020", "116", "6. Clean water", "218", "European Joint Doctorates", "11. Sustainability", "European Commission", "Knowmad Institut", "Netherlands", "Water Science and Technology"]}, "links": [{"href": "http://pubs.rsc.org/en/content/articlepdf/2019/EW/C9EW00220K"}, {"href": "https://doi.org/10.1039/c9ew00220k"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%3A%20Water%20Research%20%26amp%3B%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1039/c9ew00220k", "name": "item", "description": "10.1039/c9ew00220k", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1039/c9ew00220k"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2016.05.073", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:17:22Z", "type": "Journal Article", "created": "2016-06-09", "title": "Associations Between Soil Bacterial Community Structure And Nutrient Cycling Functions In Long-Term Organic Farm Soils Following Cover Crop And Organic Fertilizer Amendment", "description": "Agricultural management practices can produce changes in soil microbial populations whose functions are crucial to crop production and may be detectable using high-throughput sequencing of bacterial 16S rRNA. To apply sequencing-derived bacterial community structure data to on-farm decision-making will require a better understanding of the complex associations between soil microbial community structure and soil function. Here 16S rRNA sequencing was used to profile soil bacterial communities following application of cover crops and organic fertilizer treatments in certified organic field cropping systems. Amendment treatments were hairy vetch (Vicia villosa), winter rye (Secale cereale), oilseed radish (Raphanus sativus), buckwheat (Fagopyrum esculentum), beef manure, pelleted poultry manure, Sustane(\u00ae) 8-2-4, and a no-amendment control. Enzyme activities, net N mineralization, soil respiration, and soil physicochemical properties including nutrient levels, organic matter (OM) and pH were measured. Relationships between these functional and physicochemical parameters and soil bacterial community structure were assessed using multivariate methods including redundancy analysis, discriminant analysis, and Bayesian inference. Several cover crops and fertilizers affected soil functions including N-acetyl-\u03b2-d-glucosaminidase and \u03b2-glucosidase activity. Effects, however, were not consistent across locations and sampling timepoints. Correlations were observed among functional parameters and relative abundances of individual bacterial families and phyla. Bayesian analysis inferred no directional relationships between functional activities, bacterial families, and physicochemical parameters. Soil functional profiles were more strongly predicted by location than by treatment, and differences were largely explained by soil physicochemical parameters. Composition of soil bacterial communities was predictive of soil functional profiles. Differences in soil function were better explained using both soil physicochemical test values and bacterial community structure data than using soil tests alone. Pursuing a better understanding of bacterial community composition and how it is affected by farming practices is a promising avenue for increasing our ability to predict the impact of management practices on important soil functions.", "keywords": ["Crops", " Agricultural", "2. Zero hunger", "Environmental Engineering", "Farms", "Bacteria", "Microbiota", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Pollution", "6. Clean water", "RNA", " Bacterial", "Soil", "13. Climate action", "RNA", " Ribosomal", " 16S", "Environmental Chemistry", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Waste Management and Disposal", "Soil Microbiology", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2016.05.073"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2016.05.073", "name": "item", "description": "10.1016/j.scitotenv.2016.05.073", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2016.05.073"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-10-01T00:00:00Z"}}, {"id": "10.1016/j.agrformet.2018.04.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:16:04Z", "type": "Journal Article", "created": "2018-04-19", "title": "A phenomenological model of soil evaporative efficiency using surface soil moisture and temperature data", "description": "Abstract Modeling soil evaporation has been a notorious challenge due to the complexity of the phenomenon and the lack of data to constrain it. In this context, a parsimonious model is developed to estimate soil evaporative efficiency (SEE) defined as the ratio of actual to potential soil evaporation. It uses a soil resistance driven by surface (0\u20135\u202fcm) soil moisture, meteorological forcing and time (hour) of day, and has the capability to be calibrated using the radiometric surface temperature derived from remotely sensed thermal data. The new approach is tested over a rainfed semi-arid site, which had been under bare soil conditions during a 9-month period in 2016. Three calibration strategies are adopted based on SEE time series derived from (1) eddy-covariance measurements, (2) thermal measurements, and (3) eddy-covariance measurements used only over separate drying periods between significant rainfall events. The correlation coefficients (and slopes of the linear regression) between simulated and observed (eddy-covariance-derived) SEE are 0.85, 0.86 and 0.87 (and 0.91, 0.87 and 0.91) for calibration strategies 1, 2 and 3, respectively. Moreover, the correlation coefficient (and slope of the linear regression) between simulated and observed SEE is improved from 0.80 to 0.85 (from 0.86 to 0.91) when including hour of day in the soil resistance. The reason is that, under non-energy-limited conditions, the receding evaporation front during daytime makes SEE decrease at the hourly time scale. The soil resistance formulation can be integrated into state-of-the-art dual-source surface models and has calibration capabilities across a range of spatial scales from spaceborne microwave and thermal data.", "keywords": ["550", "0207 environmental engineering", "Soil resistance", "02 engineering and technology", "Remote sensing", "15. Life on land", "calibration", "surface temperature", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "Surface temperature", "remote sensing", "Calibration", "[SDU.STU.HY] Sciences of the Universe [physics]/Earth Sciences/Hydrology", "soil resistance", "Soil moisture", "[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "soil moisture", "environment", "Soil evaporation"]}, "links": [{"href": "https://doi.org/10.1016/j.agrformet.2018.04.010"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agricultural%20and%20Forest%20Meteorology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agrformet.2018.04.010", "name": "item", "description": "10.1016/j.agrformet.2018.04.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agrformet.2018.04.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-06-01T00:00:00Z"}}, {"id": "10.1002/essoar.10505132.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:36Z", "type": "Journal Article", "created": "2020-12-04", "title": "Non-Gaussian parameter inference for hydrogeological models using Stein Variational Gradient Descent", "description": "Abstract

The sustainable management of groundwater demands a faithful characterization of the subsurface. This, in turn, requires information which is generally not readily available. To bridge the gap between data need and availability, numerical models are often used to synthesize plausible scenarios not only from direct information but also from additional, indirect data. Unfortunately, the resulting system characterizations will rarely be unique. This poses a challenge for practical parameter inference: computational limitations often force modelers to resort to methods based on questionable assumptions of Gaussianity, which do not reproduce important facets of ambiguity such as Pareto fronts or multimodality. In search of a remedy, an alternative could be found in Stein Variational Gradient Descent (SVGD), a recent development in the field of statistics. This ensemble\uffe2\uff80\uff90based method iteratively transforms a set of arbitrary particles into samples of a potentially non\uffe2\uff80\uff90Gaussian posterior, provided the latter is sufficiently smooth. A prerequisite for this method is knowledge of the Jacobian, which is usually exceptionally expensive to evaluate. To address this issue, we propose an ensemble\uffe2\uff80\uff90based, localized approximation of the Jacobian. We demonstrate the performance of the resulting algorithm in two cases: a simple, bimodal synthetic scenario, and a complex numerical model based on a real world, prealpine catchment. Promising results in both cases\uffe2\uff80\uff94even when the ensemble size is smaller than the number of parameters\uffe2\uff80\uff94suggest that SVGD can be a valuable addition to hydrogeological parameter inference.Measurements of nitrous oxide (N2O) emissions from agriculture are essential for understanding the complex soil\uffe2\uff80\uff93crop\uffe2\uff80\uff93climate processes, but there are practical and economic limits to the spatial and temporal extent over which measurements can be made. Therefore, N2O models have an important role to play. As models are comparatively cheap to run, they can be used to extrapolate field measurements to regional or national scales, to simulate emissions over long time periods, or to run scenarios to compare mitigation practices. Process\uffe2\uff80\uff90based models can also be used as an aid to understanding the underlying processes, as they can simulate feedbacks and interactions that can be difficult to distinguish in the field. However, when applying models, it is important to understand the conceptual process differences in models, how conceptual understanding changed over time in various models, and the model requirements and limitations to ensure that the model is well suited to the purpose of the investigation and the type of system being simulated. The aim of this paper is to give the reader a high\uffe2\uff80\uff90level overview of some of the important issues that should be considered when modeling. This includes conceptual understanding of widely used models, common modeling techniques such as calibration and validation, assessing model fit, sensitivity analysis, and uncertainty assessment. We also review examples of N2O modeling for different purposes and describe three commonly used process\uffe2\uff80\uff90based N2O models (APSIM, DayCent, and DNDC).A meta\uffe2\uff80\uff90analysis data\uffe2\uff80\uff90driven approach is developed to represent the soil evaporative efficiency (SEE) defined as the ratio of actual to potential soil evaporation. The new model is tested across a bare soil database composed of more than 30 sites around the world, a clay fraction range of 0.02\uffe2\uff80\uff930.56, a sand fraction range of 0.05\uffe2\uff80\uff930.92, and about 30,000 acquisition times. SEE is modeled using a soil resistance (rss) formulation based on surface soil moisture (\uffce\uffb8) and two resistance parameters and \uffce\uffb8efolding. The data\uffe2\uff80\uff90driven approach aims to express both parameters as a function of observable data including meteorological forcing, cut\uffe2\uff80\uff90off soil moisture value at which SEE=0.5, and first derivative of SEE at , named . An analytical relationship between and is first built by running a soil energy balance model for two extreme conditions with rss\uffe2\uff80\uff89=\uffe2\uff80\uff890 and using meteorological forcing solely, and by approaching the middle point from the two (wet and dry) reference points. Two different methods are then investigated to estimate the pair either from the time series of SEE and \uffce\uffb8 observations for a given site, or using the soil texture information for all sites. The first method is based on an algorithm specifically designed to accomodate for strongly nonlinear relationships and potentially large random deviations of observed SEE from the mean observed . The second method parameterizes as a multi\uffe2\uff80\uff90linear regression of clay and sand percentages, and sets to a constant mean value for all sites. The new model significantly outperformed the evaporation modules of ISBA (Interaction Sol\uffe2\uff80\uff90Biosph\uffc3\uffa8re\uffe2\uff80\uff90Atmosph\uffc3\uffa8re), H\uffe2\uff80\uff90TESSEL (Hydrology\uffe2\uff80\uff90Tiled ECMWF Scheme for Surface Exchange over Land), and CLM (Community Land Model). It has potential for integration in various land\uffe2\uff80\uff90surface schemes, and real calibration capabilities using combined thermal and microwave remote sensing data.Recent evidence has shown that relations between soil moisture and precipitation at spatial and temporal aspect are contrary to each other: afternoon precipitation tends to occur at times in which conditions are overall wet and heterogeneous in the morning, but preferentially over those patches that are relatively drier than the surroundings. This study expands the notion of soil moisture\uffe2\uff80\uff90precipitation spatial coupling by analyzing the preferred precipitation location over a range of different soil moisture patterns. Using global observations of precipitation and observationally constrained evaporative stress estimates, we confirm that relatively drier patches have more chances of receiving rain, but the preference is weakened under wetter soil conditions. During extremely wet times, wet patches have more chances of receiving rain. Moreover, the preference of precipitation to occur on drier soils is stronger when soil moisture conditions are heterogeneous. Such results indicate that the positive feedback mechanism becomes more positive as soil wetness increases and the negative feedback mechanism becomes more negative as soils become drier and more heterogeneous. The strength of these two feedback mechanisms jointly affects preferential precipitation location. Counterintuitively, analysis from 1\uffc2\uffa0day after\uffe2\uff80\uff90event soil moisture pattern shows that negative soil moisture\uffe2\uff80\uff90precipitation coupling may in turn further heterogenize soil moisture patterns, because dry patch gets extremely wet with no or less rain in surrounding. Although results here do not necessarily imply a causal relationship, this work contributes to enhancing our understanding of soil moisture\uffe2\uff80\uff90precipitation spatial coupling and exposes the complex nuances of these land\uffe2\uff80\uff90atmosphere interactions.

", "keywords": ["13. Climate action", "0207 environmental engineering", "02 engineering and technology", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2016JD026042"}, {"href": "https://doi.org/10.1002/2016JD026042"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Atmospheres", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/2016JD026042", "name": "item", "description": "10.1002/2016JD026042", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/2016JD026042"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-06-27T00:00:00Z"}}, {"id": "10.1002/2016JD026099", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:31Z", "type": "Journal Article", "created": "2017-04-07", "title": "Global soil moisture bimodality in satellite observations and climate models", "description": "Abstract

A new diagnostic metric based on soil moisture bimodality is developed in order to examine and compare soil moisture from satellite observations and Earth System Models. The methodology to derive this diagnostic is based on maximum likelihood estimator encoded into an iterative algorithm, which is applied to the soil moisture probability density function. This metric is applied to satellite data from the Advanced Microwave Scanning Radiometer for the Earth Observing System and global climate models data from the Coupled Model Intercomparison Project Phase 5 (CMIP5). Results show high soil moisture bimodality in transitional climate areas and high latitudes, potentially associated with land\uffe2\uff80\uff90atmosphere feedback processes. When comparing satellite versus climate models, a clear difference in their soil moisture bimodality is observed, with systematically higher values in the case of CMIP5 models. These differences appear related to areas where land\uffe2\uff80\uff90atmospheric feedback may be overestimated in current climate models.

", "keywords": ["PREFERENTIAL STATES", "IMPACT", "MIXTURE", "SCHEME", "0207 environmental engineering", "NORMAL-DISTRIBUTIONS", "02 engineering and technology", "15. Life on land", "01 natural sciences", "PART I", "satellite soil moisture", "climate models", "13. Climate action", "Earth and Environmental Sciences", "LAND-SURFACE MODEL", "PRECIPITATION", "SDG 13 - Climate Action", "CMIP5", "ATMOSPHERE COUPLING EXPERIMENT", "land-atmosphere interactions", "soil moisture", "bimodality", "SYSTEM", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2016JD026099"}, {"href": "https://doi.org/10.1002/2016JD026099"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Atmospheres", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/2016JD026099", "name": "item", "description": "10.1002/2016JD026099", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/2016JD026099"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-04-27T00:00:00Z"}}, {"id": "10.1002/2017JD027346", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:32Z", "type": "Journal Article", "created": "2017-12-28", "title": "Soil Moisture-Temperature Coupling in a Set of Land Surface Models", "description": "Abstract

The land surface controls the partitioning of water and energy fluxes and therefore plays a crucial role in the climate system. The coupling between soil moisture and air temperature, in particular, has been shown to affect the severity and occurrence of temperature extremes and heat waves. Here we study soil moisture\uffe2\uff80\uff90temperature coupling in five land surface models, focusing on the terrestrial segment of the coupling in the warm season. All models are run off\uffe2\uff80\uff90line over a common period with identical atmospheric forcing data, in order to allow differences in the results to be attributed to the models' partitioning of energy and water fluxes. Coupling is calculated according to two semiempirical metrics, and results are compared to observational flux tower data. Results show that the locations of the global hot spots of soil moisture\uffe2\uff80\uff90temperature coupling are similar across all models and for both metrics. In agreement with previous studies, these areas are located in transitional climate regimes. The magnitude and local patterns of model coupling, however, can vary considerably. Model coupling fields are compared to tower data, bearing in mind the limitations in the geographical distribution of flux towers and the differences in representative area of models and in situ data. Nevertheless, model coupling correlates in space with the tower\uffe2\uff80\uff90based results (r = 0.5\uffe2\uff80\uff930.7), with the multimodel mean performing similarly to the best\uffe2\uff80\uff90performing model. Intermodel differences are also found in the evaporative fractions and may relate to errors in model parameterizations and ancillary data of soil and vegetation characteristics.

", "keywords": ["ENVIRONMENT SIMULATOR JULES", "FLUXES", "0207 environmental engineering", "02 engineering and technology", "01 natural sciences", "CO2 EXCHANGE", "models", "WATER", "SCALE", "Research Articles", "0105 earth and related environmental sciences", "land surface", "CARBON-DIOXIDE EXCHANGE", "eartH2Observe", "temperature", "15. Life on land", "DECIDUOUS FOREST", "CLIMATE", "EVAPORATION", "VARIABILITY", "13. Climate action", "Earth and Environmental Sciences", "BALANCE", "land surface models", "SENSIBLE HEAT", "land-atmosphere interactions", "soil moisture"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2017JD027346"}, {"href": "https://doi.org/10.1002/2017JD027346"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Atmospheres", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/2017JD027346", "name": "item", "description": "10.1002/2017JD027346", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/2017JD027346"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-02-01T00:00:00Z"}}, {"id": "10.1007/s12649-020-01023-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:47Z", "type": "Journal Article", "created": "2020-03-26", "title": "A Multiproduct Biorefinery Approach for the Production of Hydrogen, Methane and Volatile Fatty Acids from Agricultural Waste", "description": "Abstract

A pilot scale biorefinery platform for the treatment of agro-waste and the production of hydrogen, methane and volatile fatty acids was studied in real environment. The system adopted was a two stage anaerobic process where hydrogen and volatile fatty acids were produced in the first phase (fermentation) and methane in the second one (digestion). The study demonstrated the possibility to produce a biogas composed by hydrogen and methane (10% and 55%, respectively) while recovering volatile fatty acids. The yield for acids production was equivalent to 0.13\uffc2\uffa0gVFA/gTVS (as COD) with acetate and butyrate as dominant observed species.

Graphic Abstra", "keywords": ["Horizon 2020", "Environmental Engineering", "Circular economy", "Renewable Energy", " Sustainability and the Environment", "Polyhydroxyalkanoates", "7. Clean energy", "01 natural sciences", "6. Clean water", "Biorefinery", "12. Responsible consumption", "Bio-economy", "Bioresource recovery", "Euratom", "13. Climate action", "Volatile fatty acids", "European Union (EU)", "Waste Management and Disposal", "Agricultural waste", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s12649-020-01023-3.pdf"}, {"href": "https://doi.org/10.1007/s12649-020-01023-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Waste%20and%20Biomass%20Valorization", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s12649-020-01023-3", "name": "item", "description": "10.1007/s12649-020-01023-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s12649-020-01023-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-26T00:00:00Z"}}, {"id": "10.1007/s12665-019-8598-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:48Z", "type": "Journal Article", "created": "2019-10-04", "title": "The migration of pesticide residues in groundwater at a bank filtration site (Krajkowo well field, Poland)", "description": "Abstract

River bank filtration systems are widely used for water supply purposes. Using these systems, the movement of water over short distances between the river bottom and extraction wells can decrease the concentrations of some contaminants. Such systems are especially important for the removal of specific micro-pollutants that seasonally appear in river water. In this article, pesticides migration at the Krajkowo well field is analysed based on different water extraction schemes. The water is extracted by two groups of wells (one located 60\uffe2\uff80\uff9380\uffc2\uffa0m from the Warta River, and the second located more than 400\uffc2\uffa0m from the river) and by a horizontal well with radial drains located 5\uffc2\uffa0m below the river bottom. Based on this scheme, the rate of pesticide residues removal was analysed in wells located at different distances from the river channel. The results of the three sampling campaigns conducted in summer and autumn 2017 and winter 2018 indicate the presence of pesticide compounds in the Warta River (max. total concentration of 0.171\uffc2\uffa0\uffce\uffbcg/l). The pesticides were also present in the horizontal well (max. total concentration of 0.137\uffc2\uffa0\uffce\uffbcg/l). Much smaller concentrations (max. 0.064\uffc2\uffa0\uffce\uffbcg/l) were observed in vertical wells located 60\uffe2\uff80\uff9380\uffc2\uffa0m from the river. Additionally, in the well located 250\uffc2\uffa0m from the river, only two pesticide constituents were detected (at concentrations just above the detection limit), and in a well located 680\uffc2\uffa0m from the river, the concentrations of pesticide residues were below the detection limit (excluding isoproturon, which was slightly above the detection limit). This research illustrates the effectiveness of pesticides removal by river bank filtration.

", "keywords": ["13. Climate action", "0207 environmental engineering", "02 engineering and technology", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s12665-019-8598-0.pdf"}, {"href": "https://doi.org/10.1007/s12665-019-8598-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Earth%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s12665-019-8598-0", "name": "item", "description": "10.1007/s12665-019-8598-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s12665-019-8598-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-01T00:00:00Z"}}, {"id": "10.1007/s13593-011-0056-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:49Z", "type": "Journal Article", "created": "2011-10-18", "title": "Legumes For Mitigation Of Climate Change And The Provision Of Feedstock For Biofuels And Biorefineries. A Review", "description": "Humans are currently confronted by many global challenges. These include achieving food security for a rapidly expanding population, lowering the risk of climate change by reducing the net release of greenhouse gases into the atmosphere due to human activity, and meeting the increasing demand for energy in the face of dwindling reserves of fossil energy and uncertainties about future reliability of supply. Legumes deliver several important services to societies. They provide important sources of oil, fiber, and protein-rich food and feed while supplying nitrogen (N) to agro-ecosystems via their unique ability to fix atmospheric N2 in symbiosis with the soil bacteria rhizobia, increasing soil carbon content, and stimulating the productivity of the crops that follow. However, the role of legumes has rarely been considered in the context of their potential to contribute to the mitigation of climate change by reducing fossil fuel use or by providing feedstock for the emerging biobased economies where fossil sources of energy and industrial raw materials are replaced in part by sustainable and renewable biomass resources. The aim of this review was to collate the current knowledge regarding the capacity of legumes to (1) lower the emissions of the key greenhouse gases carbon dioxide (CO2) and nitrous oxide (N2O) compared to N-fertilized systems, (2) reduce the fossil energy used in the production of food and forage, (3) contribute to the sequestration of carbon (C) in soils, and (4) provide a viable source of biomass for the generation of biofuels and other materials in future biorefinery concepts. We estimated that globally between 350 and 500\u00a0Tg\u00a0CO2 could be emitted as a result of the 33 to 46\u00a0Tg\u00a0N that is biologically fixed by agricultural legumes each year. This compares to around 300\u00a0Tg\u00a0CO2 released annually from the manufacture of 100\u00a0Tg fertilizer N. The main difference is that the CO2 respired from the nodulated roots of N2-fixing legumes originated from photosynthesis and will not represent a net contribution to atmospheric concentrations of CO2, whereas the CO2 generated during the synthesis of N fertilizer was derived from fossil fuels. Experimental measures of total N2O fluxes from legumes and N-fertilized systems were found to vary enormously (0.03\u20137.09 and 0.09\u201318.16\u00a0kg\u00a0N2O\u2013N\u00a0ha\u22121, respectively). This reflected the data being collated from a diverse range of studies using different rates of N inputs, as well as the large number of climatic, soil, and management variables known to influence denitrification and the portion of the total N lost as N2O. Averages across 71 site-years of data, soils under legumes emitted a total of 1.29\u00a0kg\u00a0N2O\u2013N\u00a0ha\u22121 during a growing season. This compared to a mean of 3.22\u00a0kg\u00a0N2O\u2013N\u00a0ha\u22121 from 67 site-years of N-fertilized crops and pastures, and 1.20\u00a0kg\u00a0N2O\u2013N\u00a0ha\u22121 from 33 site-years of data collected from unplanted soils or unfertilized non-legumes. It was concluded that there was little evidence that biological N2 fixation substantially contributed to total N2O emissions, and that losses of N2O from legume soil were generally lower than N-fertilized systems, especially when commercial rates of N fertilizer were applied. Elevated rates of N2O losses can occur following the termination of legume-based pastures, or where legumes had been green- or brown-manured and there was a rapid build-up of high concentrations of nitrate in soil. Legume crops and legume-based pastures use 35% to 60% less fossil energy than N-fertilized cereals or grasslands, and the inclusion of legumes in cropping sequences reduced the average annual energy usage over a rotation by 12% to 34%. The reduced energy use was primarily due to the removal of the need to apply N fertilizer and the subsequently lower N fertilizer requirements for crops grown following legumes. Life cycle energy balances of legume-based rotations were also assisted by a lower use of agrichemicals for crop protection as diversification of cropping sequences reduce the incidence of cereal pathogens and pests and assisted weed control, although it was noted that differences in fossil energy use between legumes and N-fertilized systems were greatly diminished if energy use was expressed per unit of biomass or grain produced. For a change in land use to result in a net increase C sequestration in soil, the inputs of C remaining in plant residues need to exceed the CO2 respired by soil microbes during the decomposition of plant residues or soil organic C, and the C lost through wind or water erosion. The net N-balance of the system was a key driver of changes in soil C stocks in many environments, and data collected from pasture, cropping, and agroforestry systems all indicated that legumes played a pivotal role in providing the additional organic N required to encourage the accumulation of soil C at rates greater than can be achieved by cereals or grasses even when they were supplied with N fertilizer. Legumes contain a range of compounds, which could be refined to produce raw industrial materials currently manufactured from petroleum-based sources, pharmaceuticals, surfactants, or food additives as valuable by-products if legume biomass was to be used to generate biodiesel, bioethanol, biojet A1 fuel, or biogas. The attraction of using leguminous material feedstock is that they do not need the inputs of N fertilizer that would otherwise be necessary to support the production of high grain yields or large amounts of plant biomass since it is the high fossil energy use in the synthesis, transport, and application of N fertilizers that often negates much of the net C benefits of many other bioenergy sources. The use of legume biomass for biorefineries needs careful thought as there will be significant trade-offs with the current role of legumes in contributing to the organic fertility of soils. Agricultural systems will require novel management and plant breeding solutions to provide the range of options that will be required to mitigate climate change. Given their array of ecosystem services and their ability to reduce greenhouse gas emissions, lower the use of fossil energy, accelerate rates of C sequestration in soil, and provide a valuable source of feedstock for biorefineries, legumes should be considered as important components in the development of future agroecosystems.", "keywords": ["Carbon sequestration", "2. Zero hunger", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "571", "04 agricultural and veterinary sciences", "15. Life on land", "Legumes", "Air and water emissions", "Greenhouses and coverings", "7. Clean energy", "Biorefinery", "12. Responsible consumption", "[SDV.EE] Life Sciences [q-bio]/Ecology", " environment", "Greenhouse gases", "2305 Environmental Engineering", "13. Climate action", "Biological N2 fixation", "Biofuels", "11. Sustainability", "Farm nutrient management", "0401 agriculture", " forestry", " and fisheries", "Recycling", " balancing and resource management", "1102 Agronomy and Crop Science"]}, "links": [{"href": "https://doi.org/10.1007/s13593-011-0056-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agronomy%20for%20Sustainable%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s13593-011-0056-7", "name": "item", "description": "10.1007/s13593-011-0056-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s13593-011-0056-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-10-19T00:00:00Z"}}, {"id": "10.1007/s13593-012-0114-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:49Z", "type": "Journal Article", "created": "2012-10-02", "title": "Biofuel From Plant Biomass", "description": "Abstract

Plant biomass can be used for multiple forms of bioenergy, and there is a very large potential supply, depending on which global assessment is most accurate in terms of land area that could be available for biomass production. The most suitable plant species must be identified before the potential biomass production in a particular region can be quantified. This in turn depends on the degree of climatic adaptation by those species. In the range of climates present in New Zealand, biomass crop growth has less restriction due to water deficit or low winter temperature than in most world regions. Biomass production for energy use in New Zealand would be best utilised as transport fuel since 70\uffc2\uffa0% of the country\uffe2\uff80\uff99s electricity generation is already renewable, but nearly all of its transport fossil fuel is imported. There is a good economic development case for transport biofuel production using waste streams and biomass crops. This review identified the most suitable crop species and assessed their production potential for use within the climatic range present in New Zealand. Information from published work was used as a basis for selecting appropriate crops in a 2-year selection and evaluation process. Where there were knowledge gaps, the location-specific selections were further evaluated by field measurements. The data presented have superseded much of the speculative information on the suitability of species for the potential development of a biofuel industry in New Zealand.

", "keywords": ["0106 biological sciences", "2. Zero hunger", "Biomass crops", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "Environmental Engineering", "High dry mass yield", "LCA", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "7. Clean energy", "Energy crops", "Perennials", "[SDV.EE] Life Sciences [q-bio]/Ecology", " environment", "Greenhouse gases", "13. Climate action", "Biofuels", "0401 agriculture", " forestry", " and fisheries", "Agronomy and Crop Science", "Land use change", "Bioenergy potential"], "contacts": [{"organization": "Huub Kerckhoffs, Richard Renquist,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s13593-012-0114-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agronomy%20for%20Sustainable%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s13593-012-0114-9", "name": "item", "description": "10.1007/s13593-012-0114-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s13593-012-0114-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-10-03T00:00:00Z"}}, {"id": "10.1007/s13593-012-0128-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:49Z", "type": "Journal Article", "created": "2013-01-28", "title": "Enhanced Wheat Yield By Biochar Addition Under Different Mineral Fertilization Levels", "description": "Climate change and global warming have worldwide adverse consequences. Biochar production and its use in agriculture can play a key role in climate change mitigation and help improve the quality and management of waste materials coming from agriculture and forestry. Biochar is a carbonaceous material obtained from thermal decomposition of residual biomass at relatively low temperature and under oxygen limited conditions (pyrolysis). Biochar is currently a subject of active research worldwide because it can constitute a viable option for sustainable agriculture due to its potential as a long-term sink for carbon in soil and benefits for crops. However, to date, the results of research studies on biochar effects on crop production show great variability, depending on the biochar type and experimental conditions. Therefore, it is important to identify the beneficial aspects of biochar addition to soil on crop yield in order to promote the adoption of this practice in agriculture. In this study, the effects of two types of biochar from agricultural wastes typical of Southern Spain: wheat straw and olive tree pruning, combined with different mineral fertilization levels on the growth and yield of wheat (Triticum durum L. cv. Vitron) were evaluated. Durum wheat was pot-grown for 2 months in a growth chamber on a soil collected from an agricultural field near C\u00f3rdoba, Southern Spain. Soil properties and plant growth variables were studied in order to assess the agronomic efficiency of biochar. Our results show that biochar addition to a nutrientpoor, slightly acidic loamy sand soil had little effect on wheat yield in the absence of mineral fertilization. However, at the highest mineral fertilizer rate, addition of biochar led to about 20\u201330 % increase in grain yield compared with the use of the mineral fertilizer alone. Both biochars acted as a source of available P, which led to beneficial effects on crop production. In contrast, the addition of biochar resulted in decreases in available N and Mn. A maximum reduction in plant nutrient concentration of 25 and 80% compared to nonbiochar-treated soils for N and Mn, respectively, was detected. This fact was related to the own nature of biochar: low available nitrogen content, high adsorption capacity, and low mineralization rate for N; and alkaline pH and high carbonate content for Mn. Our results indicate that biochar-based soil management strategies can enhance wheat production with the environmental benefits of global warming mitigation. This can contribute positively to the viability and benefits of agricultural production systems. However, the nutrient\u2013biochar interactions should receive special attention due to the great variability in the properties of biochar-type materials.", "keywords": ["2. Zero hunger", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "Environmental Engineering", "Nitrogen", "Agricultural wastes", "Phosphorus", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "12. Responsible consumption", "[SDV.EE] Life Sciences [q-bio]/Ecology", " environment", "Biochar", "Phosporus", "13. Climate action", "Wheat", "0401 agriculture", " forestry", " and fisheries", "Grain yield", "Agronomy and Crop Science", "Plant growth", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s13593-012-0128-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agronomy%20for%20Sustainable%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s13593-012-0128-3", "name": "item", "description": "10.1007/s13593-012-0128-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s13593-012-0128-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-01-29T00:00:00Z"}}, {"id": "10.1007/s13762-013-0250-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:49Z", "type": "Journal Article", "created": "2013-03-25", "title": "A poly-\u03b5-caprolactone based biofilm carrier for nitrate removal from water", "description": "Nitrate removal from water has been accomplished by heterotrophic biofilms using organic carbon as a source of reducing power. To overcome the natural limitation in organic carbon in water, a poly-e-caprolactone based biofilm carrier that serves simultaneously as a biofilm carrier and as a source of organic carbon was developed and tested in the present work. The feasibility of the new biofilm carrier for nitrate removal from water was evaluated in a packed bed reactor. The combination of size and structure provided a carrier element having high surface area and void volume, 1,170\u00a0m2/m3 and 67\u00a0%, respectively. A maximum denitrification rate of 4.4\u00a0mg\u00a0N\u2013NO3 \u2212/(L.h) (9.2\u00a0mg\u00a0N\u2013NO3 \u2212/(m2.h)) was achieved in the packed bed reactor at 20\u00a0\u00b0C and pH 7.0. Main advantages of the biofilm carrier developed in the present work are its mechanical stability in water even after biofilm formation and controlled release of organic carbon by enzymatic reactions. The proposed biotechnology to remove nitrate from groundwater is robust and easy to operate.", "keywords": ["Science & Technology", "Biofilm", "0207 environmental engineering", "02 engineering and technology", "Biofilm reactor", "01 natural sciences", "6. Clean water", "Solid carbon source", "Biofilters", "Biodegradable polymer", "Denitrification", "Packed bed reactor", "Tratamento de \u00e1guas residuais", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s13762-013-0250-z"}, {"href": "https://doi.org/10.1007/s13762-013-0250-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Environmental%20Science%20and%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s13762-013-0250-z", "name": "item", "description": "10.1007/s13762-013-0250-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s13762-013-0250-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-03-26T00:00:00Z"}}, {"id": "10.1007/s13762-019-02264-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:49Z", "type": "Journal Article", "created": "2019-02-12", "title": "High-solids anaerobic digestion requires a trade-off between total solids, inoculum-to-substrate ratio and ammonia inhibition", "description": "Increasing total solids in anaerobic digestion can reduce the methane yield by highly complex bio-physical\u2013chemical mechanisms. Therefore, understanding those mechanisms and their main drivers becomes crucial to optimize this waste treatment biotechnology. In this study, seven batch experiments were conducted to investigate the effects of increasing the initial total solids in high-solids anaerobic digestion of the organic fraction of municipal solid waste. With inoculum-to-substrate ratio\u2009=\u20091.5 g VS/g VS and maximum total solids \u2264\u200919.6%, mono-digestion of the organic fraction of municipal solid waste showed a methane yield\u2009=\u2009174\u2013236 NmL CH4/g VS. With inoculum-to-substrate ratio \u2264\u20091.0 g VS/g VS and maximum total solids \u2265\u200924.0%, mono-digestion experiments acidified. Co-digestion of the organic fraction of municipal solid waste and beech sawdust permitted to reduce the inoculum-to-substrate ratio to 0.16 g VS/g VS while increasing total solids up to 30.2%, though achieving a lower methane yield (117\u2013156 NmL CH4/g VS). At each inoculum-to-substrate ratio, higher total solids corresponded to higher ammonia and volatile fatty acid accumulation. Thus, a 40% lower methane yield for mono-digestion was observed at a NH3 concentration \u2265\u20092.3 g N\u2013NH3/kg reactor content and total solids\u2009=\u200915.0%. Meanwhile, co-digestion lowered the nitrogen content, being the risk of acidification exacerbated only at total solids \u2265\u200920.0%. Therefore, the biodegradability of the substrate, as well as the operational total solids and inoculum-to-substrate ratio, are closely interrelated parameters determining the success of methanogenesis, but also the risk of ammonia inhibition in high-solids anaerobic digestion.", "keywords": ["Environmental Engineering", "[SDE.IE]Environmental Sciences/Environmental Engineering", "Organic fraction of municipal solid waste", "0211 other engineering and technologies", "500", "High-solids anaerobic digestion", "02 engineering and technology", "Co-digestion", "01 natural sciences", "7. Clean energy", "6. Clean water", "12. Responsible consumption", "Agricultural and Biological Sciences (all)", "Thermophilic", "13. Climate action", "Batch experiments", "11. Sustainability", "Environmental Chemistry", "Volatile fatty acids", "[SDE.IE] Environmental Sciences/Environmental Engineering", "Batch experiments; Co-digestion; High-solids anaerobic digestion; Methane yield; Organic fraction of municipal solid waste; Thermophilic; Volatile fatty acids; Environmental Engineering; Environmental Chemistry; Agricultural and Biological Sciences (all)", "Methane yield", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/743139/1/Batch%20Manuscript%20last%20for%20IRIS.pdf"}, {"href": "http://link.springer.com/content/pdf/10.1007/s13762-019-02264-z.pdf"}, {"href": "https://hal.inrae.fr/hal-02961893/file/Batch%20Manuscript_revf.pdf"}, {"href": "https://doi.org/10.1007/s13762-019-02264-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Environmental%20Science%20and%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s13762-019-02264-z", "name": "item", "description": "10.1007/s13762-019-02264-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s13762-019-02264-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-12T00:00:00Z"}}, {"id": "10.1007/s40333-013-0151-5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:50Z", "type": "Journal Article", "created": "2013-03-04", "title": "Effect Of Vegetation On Soil Water Retention And Storage In A Semi-Arid Alpine Forest Catchment", "description": "The runoff generated from mountainous regions is recognized as the main water source for inland river basins in arid environments. Thus, the mechanisms by which catchments retain water in soils are to be understood. The water storage capacity of soil depends on its depth and capacity to retain water under gravitational drainage and evapotranspiration. The latter can be studied through soil water retention curve (SWRC), which is closely related to soil properties such as texture, bulk density, porosity, soil organic carbon content, and so on. The present study represented SWRCs using HYDRUS-1D. In the present study, we measured physical and hydraulic properties of soil samples collected from Sabina przewalskii forest (south-facing slope with highest solar radiation), shrubs (west-facing slope with medium radiation), and Picea crassifolia forest (north-facing slope with lowest radiation), and analyzed the differences in soil water storage capacity of these soil samples. Soil water content of those three vegetation covers were also measured to validate the soil water storage capacity and to analyze the relationship between soil organic matter content and soil water content. Statistical analysis showed that different vegetation covers could lead to different soil bulk densities and differences in soil water retention on the three slope aspects. Sand content, porosity, and organic carbon content of the P. crassifolia forest were relatively greater compared with those of the S. przewalskii forest and shrubs. However, silt content and soil bulk density were relatively smaller than those in the S. przewalskii forest and shrubs. In addition, there was a significant linear positive relationship between averaged soil water content and soil organic matter content (P<0.0001). However, this relationship is not significant in the P. crassifolia forest. As depicted in the SWRCs, the water storage capacity of the soil was 39.14% and 37.38% higher in the P. crassifolia forest than in the S. przewalskii forest and shrubs, respectively, at a similar soil depth.", "keywords": ["0207 environmental engineering", "02 engineering and technology", "15. Life on land", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s40333-013-0151-5"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Arid%20Land", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s40333-013-0151-5", "name": "item", "description": "10.1007/s40333-013-0151-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s40333-013-0151-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-03-05T00:00:00Z"}}, {"id": "10.1002/esp.1747", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:36Z", "type": "Journal Article", "created": "2009-01-20", "title": "Vegetation And Topographic Controls On Sediment Deposition And Storage On Gully Beds In A Degraded Mountain Area", "description": "Abstract

Active gully systems developed on highly weathered or loose parent material are an important source of runoff and sediment production in degraded areas. However, a decrease of land pressure may lead to a return of a partial vegetation cover, whereby gully beds are preferred recolonization spots. Although the current knowledge on the role of vegetation on reducing sediment production on slopes is well developed, few studies exist on the significance of restoring sediment transport pathways on the total sediment budget of degraded mountainous catchments. This study in the Ecuadorian Andes evaluates the potential of vegetation to stabilize active gully systems by trapping and retaining eroded sediment in the gully bed, and analyses the significance of vegetation restoration in the gully bed in reducing sediment export from degraded catchments. Field measurements on 138 gully segments located in 13 ephemeral steep gullies with different ground vegetation cover indicate that gully bed vegetation is the most important factor in promoting short\uffe2\uff80\uff90term (1\uffe2\uff80\uff9315 years) sediment deposition and gully stabilization. In well\uffe2\uff80\uff90vegetated gully systems (\uffc2\uffa0\uffe2\uff89\uffa5\uffc2\uffa030% of ground vegetation cover), 0.035\uffc2\uffa0m3 m\uffe2\uff80\uff931 of sediment is deposited yearly in the gully bed. Almost 50 per cent of the observed variance in sediment deposition volumes can be explained by the mean ground vegetation cover of the gully bed. The presence of vegetation in gully beds gives rise to the formation of vegetated buffer zones, which enhance short\uffe2\uff80\uff90term sediment trapping even in active gully systems in mountainous environments. Vegetation buffer zones are shown to modify the connectivity of sediment fluxes, as they reduce the transport efficiency of gully systems. First calculations on data on sediment deposition patterns in our study area show that gully bed deposition in response to gully bed revegetation can represent more than 25 per cent of the volume of sediment generated within the catchment. Our findings indicate that relatively small changes in landscape connectivity have the potential to create strong (positive) feedback loops between erosion and vegetation dynamics. Copyright \uffc2\uffa9 2009 John Wiley & Sons, Ltd.

", "keywords": ["13. Climate action", "0207 environmental engineering", "02 engineering and technology", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1002/esp.1747"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earth%20Surface%20Processes%20and%20Landforms", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/esp.1747", "name": "item", "description": "10.1002/esp.1747", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/esp.1747"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-04-23T00:00:00Z"}}, {"id": "10.1002/essoar.10505644.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:36Z", "type": "Journal Article", "created": "2021-05-21", "title": "Hydrogeological Uncertainty Estimation With the Analytic Element Method", "description": "Abstract

Uncertainty estimation plays an important part in practical hydrogeology. With most of the subsurface unobservable, attempts at system characterization will invariably be incomplete. Uncertainty estimation, then, must quantify the influence of unknown parameters, forcings, and structural deficiencies. In this endeavor, numerical modeling frameworks can resolve a high degree of subsurface complexity and its associated uncertainty. Where boundary uncertainty is concerned, however, numerical frameworks can be restrictive. The interdependence of grid discretization and its enclosing boundaries render exploration of uncertainties in their extent or nature challenging. The analytic element method (AEM) may be an interesting complement, as it is computationally efficient, economic with its parameter count, and does not require enclosure through finite boundaries. These properties make AEM well suited for uncertainty estimation, particularly in data\uffe2\uff80\uff90scarce settings or exploratory studies. In this study, we explore the use of AEM for flow field uncertainty estimation, with a particular focus on boundary uncertainty. To induce diverse, uncertain regional flow more easily, we propose a new element based on a M\uffc3\uffb6bius transformation. We include this element in a simple Python\uffe2\uff80\uff90based AEM toolbox and benchmark it against MODFLOW. Coupling AEM with a Markov Chain Monte Carlo routine using adaptive proposals, we explore its use in a synthetic case study. We find that AEM permits efficient uncertainty estimation for groundwater flow fields, which may form a basis for stochastic Lagrangian transport modeling or can support advanced model design by informing the placement of numerical model boundaries.Restoring belts of perennial vegetation in landscapes is widely recognized as a measure of improving landscape function. While there have been many studies of the transport of pollutants through grass filter strips, few have addressed sediment related processes through restored tree belts. In order to identify these processes and quantify their relative contribution to sediment trapping, a series of rainfall simulations was conducted on a 600 m2 hillslope comprising a pasture upslope of a 15 year old tree belt. Although the simulated events were extreme (average recurrence intervals \uffe2\uff88\uffbc10 and 50 yr), the trapping efficiency of the tree belt was very high: at least 94% of the total mass of sediments was captured. All the size fractions were trapped with a minimum Sediment Trapping Ratio (STR) of 91% for the medium\uffe2\uff80\uff90sized fragments. Fractions < 1\uffc2\uffb73 \uffc2\uffb5m and > 182 \uffc2\uffb5m were totally captured (STR = 100%). Through the joint analysis of sediment budgets and soil surface conditions, we identified different trapping processes. The main trapping process is the sedimentation (at least 62% of trapped sediment mass) with deposits in the backwater and as micro\uffe2\uff80\uff90terraces within the tree belt. Modelling results show that the coarsest size fractions above 75 \uffc2\uffb5m are preferentially deposited. Joint infiltration of water and sediments has also been noticed, however, this process alone cannot explain the selective trapping of the finest fractions. We suggest that the finest fractions transported by the overland flow may be trapped by adsorption on the abundant litter present within the tree belt. Copyright \uffc2\uffa9 2008 John Wiley & Sons, Ltd.

", "keywords": ["[SDE] Environmental Sciences", "SEDIMENT DELIVERY", "550", "[SDV]Life Sciences [q-bio]", "MACROPORES", "SIZE SELECTIVITY", "0207 environmental engineering", "04 agricultural and veterinary sciences", "02 engineering and technology", "15. Life on land", "TREE LITTER", "BACKWATER", "ruissellement", "pluie artificielle", "630", "[SDV] Life Sciences [q-bio]", "RUNOFF;SIZE SELECTIVITY;SEDIMENT DELIVERY;TREE LITTER;BACKWATER;SEDIMENTATION;MACROPORES;am\u00e9nagement paysager", "13. Climate action", "[SDE]Environmental Sciences", "exp\u00e9rimentation au champ", "0401 agriculture", " forestry", " and fisheries", "am\u00e9nagement paysager", "RUNOFF", "haie", "SEDIMENTATION"]}, "links": [{"href": "https://doi.org/10.1002/hyp.6957"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/hyp.6957", "name": "item", "description": "10.1002/hyp.6957", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/hyp.6957"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-01-23T00:00:00Z"}}, {"id": "10.1002/hyp.6971", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:37Z", "type": "Journal Article", "created": "2008-02-27", "title": "Investigation Of Runoff Generation In A Pristine, Poorly Gauged Catchment In The Chilean Andes I: A Multi-Method Experimental Study", "description": "Abstract

Catchment scale hydrological process studies in southern Chile are of special interest as little research at this scale has been carried out in this region. In particular, the young volcanic ash soils, which are typical for this area, are not well understood in their hydrological behaviour. In addition, extensive land use changes require detailed knowledge of hydrological processes in disturbed as well as undisturbed catchments in order to estimate resulting risks of erosion, eutrophication, floods and droughts. This study focuses on data collection and experimental determination of relevant processes in an undisturbed forested catchment in the Andes of southern Chile. The here gained understanding of runoff generation can serve as a reference for comparison with sites subject to human intervention, improving estimation of the effects of land use change. Owing to the lack of long\uffe2\uff80\uff90term data for this catchment it was necessary to replace long time series by a multitude of experimental methods covering as many aspects of the runoff generation process as possible. The methods used in this investigation include: measurements of streamflow, rainfall, throughfall, water chemistry, soil water dynamics, groundwater dynamics, soil physics, soil mineralogy, geo\uffe2\uff80\uff90electrical sounding, and tracer techniques. Methods and equipment used during field campaigns are described and evaluated for usefulness versus expenditure (labour and financial costs). Selected results and the hypotheses developed from these findings are presented. The results suggest the importance of fast processes for rainfall runoff response on the one hand as well as considerable dampening effects of a large subsurface storage on the other hand. Copyright \uffc2\uffa9 2008 John Wiley & Sons, Ltd.

", "keywords": ["13. Climate action", "0208 environmental biotechnology", "0207 environmental engineering", "550 - Earth sciences", "02 engineering and technology", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1002/hyp.6971"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/hyp.6971", "name": "item", "description": "10.1002/hyp.6971", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/hyp.6971"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-02-27T00:00:00Z"}}, {"id": "10.1002/grl.50352", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:36Z", "type": "Journal Article", "created": "2013-03-15", "title": "Climate Impacts Of A Large-Scale Biofuels Expansion", "description": "

A global biofuels program will potentially lead to intense pressures on land supply and cause widespread transformations in land use. These transformations can alter the Earth climate system by increasing greenhouse gas (GHG) emissions from land use changes and by changing the reflective and energy exchange characteristics of land ecosystems. Using an integrated assessment model that links an economic model with climate, terrestrial biogeochemistry, and biogeophysics models, we examined the biogeochemical and biogeophysical effects of possible land use changes from an expanded global second\uffe2\uff80\uff90generation bioenergy program on surface temperatures over the first half of the 21st century. Our integrated assessment model shows that land clearing, especially forest clearing, has two concurrent effects\uffe2\uff80\uff94increased GHG emissions, resulting in surface air warming; and large changes in the land's reflective and energy exchange characteristics, resulting in surface air warming in the tropics but cooling in temperate and polar regions. Overall, these biogeochemical and biogeophysical effects will only have a small impact on global mean surface temperature. However, the model projects regional patterns of enhanced surface air warming in the Amazon Basin and the eastern part of the Congo Basin. Therefore, global land use strategies that protect tropical forests could dramatically reduce air warming projected in these regions.

", "keywords": ["Climate impacts", "Environmental Impact Assessment", "550", "13. Climate action", "Biofuels", "Land use", "11. Sustainability", "0207 environmental engineering", "02 engineering and technology", "15. Life on land", "7. Clean energy", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1002/grl.50352"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geophysical%20Research%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/grl.50352", "name": "item", "description": "10.1002/grl.50352", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/grl.50352"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-04-28T00:00:00Z"}}, {"id": "10.1002/hyp.11203", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:36Z", "type": "Journal Article", "created": "2017-04-16", "title": "3D soil hydraulic database of Europe at 250\u00a0m resolution", "description": "Abstract

Soil hydraulic properties are required in various modelling schemes. We propose a consistent spatial soil hydraulic database at 7 soil depths up to 2\uffc2\uffa0m calculated for Europe based on SoilGrids250m and 1\uffc2\uffa0km datasets and pedotransfer functions trained on the European Hydropedological Data Inventory. Saturated water content, water content at field capacity and wilting point, saturated hydraulic conductivity and Mualem\uffe2\uff80\uff90van Genuchten parameters for the description of the moisture retention, and unsaturated hydraulic conductivity curves have been predicted. The derived 3D soil hydraulic layers (EU\uffe2\uff80\uff90SoilHydroGrids ver1.0) can be used for environmental modelling purposes at catchment or continental scale in Europe. Currently, only EU\uffe2\uff80\uff90SoilHydroGrids provides information on the most frequently required soil hydraulic properties with full European coverage up to 2\uffc2\uffa0m depth at 250\uffc2\uffa0m resolution.We introduce the freely available web\uffe2\uff80\uff90based Water in an Agricultural Landscape\uffe2\uff80\uff94NU\uffc4\uff8dice Database (WALNUD) dataset that includes both hydrological and meteorological records at the Nu\uffc4\uff8dice experimental catchment (0.53\uffe2\uff80\uff89km2), which is representative of an intensively farmed landscape in the Czech Republic. The Nu\uffc4\uff8dice experimental catchment was established in 2011 for the observation of rainfall\uffe2\uff80\uff93runoff processes, soil erosion processes, and water balance of a cultivated landscape. The average altitude is 401\uffe2\uff80\uff89m\uffe2\uff80\uff89a.s.l., the mean land slope is 3.9%, and the climate is humid continental (mean annual temperature 7.9\uffc2\uffb0C, annual precipitation 630\uffe2\uff80\uff89mm). The catchment is drained by an artificially straightened stream and consists of three fields covering over 95% of the area which are managed by two different farmers. The typical crops are winter wheat, rapeseed, and alfalfa. The installed equipment includes a standard meteorological station, several rain gauges distributed across the basin, and a flume with an H\uffe2\uff80\uff90type facing that is used to monitor stream discharge, water turbidity, and basic water quality indicators. Additionally, the groundwater level and soil water content at various depths near the stream are recorded. Recently, large\uffe2\uff80\uff90scale soil moisture monitoring efforts have been introduced with the installation of two cosmic\uffe2\uff80\uff90ray neutron sensors for soil moisture monitoring. The datasets consist of observed variables (e.g. measured precipitation, air temperature, stream discharge, and soil moisture) and are available online for public use. The cross\uffe2\uff80\uff90seasonal, open access datasets at this small\uffe2\uff80\uff90scale agricultural catchment will benefit not only hydrologists but also local farmers.

", "keywords": ["2. Zero hunger", "13. Climate action", "0207 environmental engineering", "02 engineering and technology", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.14042"}, {"href": "https://doi.org/10.1002/hyp.14042"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/hyp.14042", "name": "item", "description": "10.1002/hyp.14042", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/hyp.14042"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-10-01T00:00:00Z"}}, {"id": "10.1002/hyp.14053", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:36Z", "type": "Journal Article", "created": "2021-02-23", "title": "Time\u2010lapse visualization of spatial and temporal patterns of stream network dynamics", "keywords": ["0207 environmental engineering", "Hpeye", "02 engineering and technology"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.14053"}, {"href": "https://doi.org/10.1002/hyp.14053"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/hyp.14053", "name": "item", "description": "10.1002/hyp.14053", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/hyp.14053"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-01T00:00:00Z"}}, {"id": "10.1002/hyp.14667", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:36Z", "type": "Journal Article", "created": "2022-08-09", "title": "Non\u2010linearity in event runoff generation in a small agricultural catchment", "description": "Abstract

Understanding the role of soil moisture and other controls in runoff generation is important for predicting runoff across scales. This paper aims to identify the degree of non\uffe2\uff80\uff90linearity of the relationship between event peak runoff and potential controls for different runoff generation mechanisms in a small agricultural catchment. The study is set in the 66\uffe2\uff80\uff89ha Hydrological Open Air Laboratory, Austria, where discharge was measured at the catchment outlet and for 11 sub\uffe2\uff80\uff90catchments or hillslopes with different runoff generation mechanisms. Peak runoff of 73 events was related to three potential controls: event precipitation, soil moisture and groundwater levels. The results suggest that the hillslopes dominated by ephemeral overland flow exhibit the most non\uffe2\uff80\uff90linear runoff generation behaviour for its controls; runoff is only generated above a threshold of 95% of the maximum soil moisture. Runoff generation through tile drains and in wetlands is more linear. The largest winter and spring events at the catchment outlet are caused by runoff from hillslopes with shallow flow paths (ephemeral overland flow and tile drainage mechanisms), while the largest summer events are caused by other hillslopes, those with deeper flow paths or with saturation areas throughout the year. Therefore, the response of the entire catchment is a mix of the various mechanisms, and the groundwater contribution makes the response more linear. The implications for hydrological modelling are discussed.Rainfall interception was studied during one complete year in two montane rain forests in the Colombian Andes at altitudes of 2550 and 3370 m. Additional measurements were made in a subsequent period at 3370 m, comparing two plots with different tree genera. Special attention was paid to the possible consequences of the abundant epiphytic vegetation, representing a high but spatially variable storage capacity. On an annual basis, interception amounted to 262 mm (12.4 per cent) of 2115 mm incident precipitation at 2550 m, and to 265 mm (18.3 per cent) of 1453 mm incident precipitation at 3370 m. There was no evidence for fog precipitation. The fact that, in spite of lower annual rainfall and lower evaporation rate, absolute quantity of interception at 3370 m was not lower than at 2550 m is probably related to differences in rainfall distribution and canopy storage capacities. The different responses of the two tree genera (characterized by distinct epiphyte cover) and the lower interception after prolonged wet periods support the idea that epiphytes play a significant role in the interception process. A realistic description of the water balance of such ecosystems will require the adaptation of existing interception models.

", "keywords": ["0208 environmental biotechnology", "0207 environmental engineering", "02 engineering and technology", "15. Life on land"], "contacts": [{"organization": "Erik J. Veneklaas, R. van Ek,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1002/hyp.3360040403"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/hyp.3360040403", "name": "item", "description": "10.1002/hyp.3360040403", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/hyp.3360040403"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1990-10-01T00:00:00Z"}}, {"id": "10.1002/hyp.6212", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:37Z", "type": "Journal Article", "created": "2006-07-24", "title": "Water Budgets Of Three Small Catchments Under Montane Forest In Ecuador: Experimental And Modelling Approach", "description": "Abstract

The water budget of forested catchments controls the local water supply and influences the regional climate. To assess the anthropogenic impact on the water cycle, we constructed a water budget for three \uffe2\uff88\uffbc10 ha catchments under lower montane forest on the east\uffe2\uff80\uff90facing slope of the Andes in south Ecuador at 1900\uffe2\uff80\uff932150 m elevation. We used field hydrological measurements and modelled surface flows with TOPMODEL, a semi\uffe2\uff80\uff90distributed catchment model. We measured incident precipitation, throughfall, stemflow, and surface flow between May 1998 and April 2002 in hourly to weekly resolution, and determined all variables needed to parameterise TOPMODEL. On average, of the four monitored years and three catchments, incident precipitation was 2504 \uffc2\uffb1 SD 123 mm, throughfall 1473 \uffc2\uffb1 197 mm, and stemflow 25 \uffc2\uffb1 2 mm yr\uffe2\uff88\uff921. Fog water input was negligible. Mean annual interception loss in the forest was 1006 \uffc2\uffb1 270 mm, and mean annual surface flow, calculated with TOPMODEL in an hourly resolution was 1039 \uffc2\uffb1 48 mm. The resulting mean annual evapotranspiration was 1466 \uffc2\uffb1 161 mm of which 32% ( =471 \uffc2\uffb1 162 mm) was transpiration if evaporation from the soil was neglected. Our study catchments show a high evapotranspiration attributable to the strong solar insolation near the equator, the small impact of fog, the generally low intensity of incident precipitation and additional wind\uffe2\uff80\uff90driven advective energy input. Copyright \uffc2\uffa9 2006 John Wiley & Sons, Ltd.

", "keywords": ["13. Climate action", "0208 environmental biotechnology", "0207 environmental engineering", "550 - Earth sciences", "02 engineering and technology", "15. Life on land"], "contacts": [{"organization": "Fleischbein, K., Wilcke, W., Zech, W., Valarezo, C., Knoblich, K.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1002/hyp.6212"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/hyp.6212", "name": "item", "description": "10.1002/hyp.6212", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/hyp.6212"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-07-24T00:00:00Z"}}, {"id": "10.1002/hyp.6331", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:37Z", "type": "Journal Article", "created": "2006-09-25", "title": "Soil Water Storage And Rooting Depth: Key Factors Controlling Recharge On Rangelands", "description": "Abstract

The practice of removing woody vegetation to enhance water supply in semiarid rangelands in the United States continues to generate considerable interest, even though past research has yielded apparently contradictory results concerning its efficacy. In an attempt to elucidate the factors that determine whether and how woody vegetation removal affects water supply, we analysed the problem using a water balance approach. In our analysis, deep drainage is the water balance component associated with water supply. Because the herbaceous vegetation that replaces the woody plants generally has a shallower effective rooting depth (Rd), the amount of soil water potentially available for transpiration is reduced and more is available for deep drainage. The potential increase in deep drainage can be estimated from the capacity of the soil to store plant\uffe2\uff80\uff90available water (Sc) and may be substantial. Our case study on sagebrush rangeland documents how Rd, and consequently Sc, changed after woody vegetation at the site was removed by burning. Using depth profiles of soil water content and matric potential, we showed that the Rd of the post\uffe2\uff80\uff90fire vegetation was about 140 cm, 60 cm less than that of the pre\uffe2\uff80\uff90fire vegetation, and that this resulted in a potential increase in deep drainage of about 6 cm of water\uffe2\uff80\uff94which in semiarid rangelands is substantial. Historical precipitation patterns indicate that there is nearly always sufficient net precipitation to generate the additional 6 cm of deep drainage at this site. However, in most of the area the soil depth is less than 140 cm, so that transpiration and deep drainage would be unaffected by the vegetation change and the overall water supply enhancement would be much less than 6 cm. These results indicate that the change in Sc that may follow woody shrub removal is an important criterion to evaluate sites for vegetation conversion. Copyright \uffc2\uffa9 2006 John Wiley & Sons, Ltd.

", "keywords": ["0208 environmental biotechnology", "0207 environmental engineering", "02 engineering and technology", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1002/hyp.6331"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrological%20Processes", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/hyp.6331", "name": "item", "description": "10.1002/hyp.6331", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/hyp.6331"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-09-25T00:00:00Z"}}, {"id": "10.1002/joc.7241", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:37Z", "type": "Journal Article", "created": "2021-06-06", "title": "Long\u2010term changes in drought indices in eastern and central Europe", "description": "Abstract

This study analyses long\uffe2\uff80\uff90term changes in drought indices (Standardised Precipitation Index\uffe2\uff80\uff94SPI, Standardised Precipitation\uffe2\uff80\uff93Evapotranspiration Index\uffe2\uff80\uff94SPEI) at 1 and 3\uffe2\uff80\uff89months scales at 182 stations in 11 central and eastern European countries during 1949\uffe2\uff80\uff932018. For comparative purposes, the necessary atmospheric evaporative demand (AED) to obtain SPEI was calculated using two methods, Hargreaves\uffe2\uff80\uff90Samani (SPEIH) and Penman\uffe2\uff80\uff90Monteith (SPEIP). The results show some relevant changes and tendencies in the drought indices. Statistically significant increase in SPI and SPEI during the cold season (November\uffe2\uff80\uff93March), reflecting precipitation increase, was found in the northern part of the study region, in Estonia, Latvia, Lithuania, northern Belarus and northern Poland. In the rest of study domain, a weak and mostly insignificant decrease prevailed in winter. Summer season (June\uffe2\uff80\uff93August) is characterized by changes in the opposite sign. An increase was observed in the north, while a clear decrease in SPEI, reflecting a drying trend, was typical for the southern regions: the Czech Republic, Slovakia, Hungary, Romania, Moldova and southern Poland. A general drying tendency revealed also in April, which was statistically significant over a wide area in the Czech Republic and Poland. Increasing trends in SPI and SPEI for September and October were detected in Romania, Moldova and Hungary. The use of SPEI instead of SPI generally enhances drying trends.Spatially integrated measurements of the surface energy balance (SEB) are needed in urban areas to evaluate urban climate models and satellite observations. Scintillometers allow observations of sensible heat flux (QH) over much larger areas than techniques such as eddy covariance (EC), however methods are needed to partition between remaining unmeasured SEB terms. This is the first study to use observed spatial and temporal patterns of QH from a scintillometer network to constrain estimates of remaining SEB terms in a dense, heterogeneous urban environment. Results show that QH dominates the surface energy balance in central London throughout the year, with expected diurnal courses and seasonal trends in QH magnitude related to solar radiation input. Measurements also reveal a clear anthropogenic component of QH with winter (summer) weekday QH values 11.7% (5.1%) higher than weekends. Spatially, QH magnitude is correlated with vegetation and building landcover fraction in the measurement source areas. Spatial analysis provides additional evidence of anthropogenic influence with highest weekday/weekend ratios (1.55) from the City of London. Spatial differences are used to estimate horizontal advection and a novel method to estimate monthly latent heat flux is developed based on observed landcover and wet\uffe2\uff80\uff93dry surface variations in normalized QH. Annual anthropogenic heat emissions are estimated to be 46.3 W m\uffe2\uff88\uff922 using an energy balance residual approach. The methods presented here have potential to significantly enhance understanding of urban areas, particularly in areas with tall buildings where there are few observational data.

", "keywords": ["13. Climate action", "11. Sustainability", "0207 environmental engineering", "02 engineering and technology", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://centaur.reading.ac.uk/68154/3/qj2967.pdf"}, {"href": "https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.2967"}, {"href": "https://doi.org/10.1002/qj.2967"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Quarterly%20Journal%20of%20the%20Royal%20Meteorological%20Society", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/qj.2967", "name": "item", "description": "10.1002/qj.2967", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/qj.2967"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-01T00:00:00Z"}}, {"id": "10.1002/saj2.20687", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:44Z", "type": "Journal Article", "created": "2024-04-27", "title": "Investigation of short\u2010term effects of forage radish on water and solute transport through a tracer test and inverse modeling", "description": "Abstract

The benefits of using cover crops for improving soil and water quality are well known. Less clear is whether cover crops, especially those forming a taproot system, can favor solute transport down to the groundwater by modifying soil hydraulic properties and solute dynamics. In this study, we employed 12 lysimeters to conduct a comparative analysis between a taproot cover crop, specifically forage radish (FR), and bare soil (BS), under three water table management conditions. Our objective was to evaluate whether the enhancement of root\uffe2\uff80\uff90derived macroporosity could have modified water and solute dynamics, and offset the benefits provided by FR that is commonly used to mitigate solute leaching. A tracer solution of bromide (Br\uffe2\uff88\uff92) was added to lysimeters, and solute flux concentrations were determined at different depths during a 25\uffe2\uff80\uff90day test. Soil moisture and pressure heads were monitored. Water and solute transport parameters were estimated by inverse modeling using HYDRUS\uffe2\uff80\uff901D. A complementary laboratory experiment was performed to quantify the effect of FR root apparatus on the macropore structure by using noninvasive X\uffe2\uff80\uff90ray microtomography (\uffc2\uffb5CT). Results showed that the growth of FR within the lysimeters induced alterations in water and solute dynamics compared with BS. This is primarily attributed to its proficiency as solute scavenger, with an uptake capacity of up to 47% of the total injected tracer. Our comparative analysis instead revealed subtle differences in soil structure and hydraulic properties brought about by the presence of FR. Major changes were observed for the saturated hydraulic conductivity (Ks), which increased from an average of 8.4\uffe2\uff80\uff9349.8\uffc2\uffa0cm day\uffe2\uff88\uff921 within the 20\uffe2\uff80\uff9345\uffc2\uffa0cm layer in BS and FR, respectively. Additionally, there was a difference in immobile water content (\uffce\uffb8im), with the values in FR averaging 21% lower than those in BS. These modifications can be attributed to the formation of fissures and channels, primarily concentrated in the proximity of taproot development, without extending into deep preferential flow pathways. These structural changes were supported by the nondestructive \uffc2\uffb5CT analyses. Upon aggregating the effects observed, solute movement to groundwater was not affected by FR compared to BS conditions.Agriculture is facing immense challenges. We have to produce enough food while safe\uffe2\uff80\uff90guarding the environment for future generations. This results in the need to use less water and fertilizer, and to harness soil quality. Key to achieving this goal is improving the understanding of processes and interactions governing the soil\uffe2\uff80\uff93plant\uffe2\uff80\uff93atmosphere continuum of agricultural ecosystems. Geophysical tools have great potential to better characterize and quantify these processes noninvasively from the plot to landscape scale. Nevertheless, a number of challenges remain for geophysical results to be better exploited by different scientific communities and by decision\uffe2\uff80\uff90makers. In this special section, we explore ongoing research in the relatively new field of agrogeophysics, and we provide an overview of potential applications and highlight future research needs.

", "keywords": ["Environmental sciences", "2. Zero hunger", "QE1-996.5", "13. Climate action", "0208 environmental biotechnology", "0207 environmental engineering", "GE1-350", "Geology", "02 engineering and technology", "15. Life on land"]}, "links": [{"href": "https://www.research.unipd.it/bitstream/11577/3449433/2/Vadose%20Zone%20Journal%20-%202021%20-%20Garr%c3%a9%20-%20Geophysics%20conquering%20new%20territories%20The%20rise%20of%20agrogeophysics.pdf"}, {"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/vzj2.20115"}, {"href": "https://doi.org/10.1002/vzj2.20115"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Vadose%20Zone%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/vzj2.20115", "name": "item", "description": "10.1002/vzj2.20115", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/vzj2.20115"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-26T00:00:00Z"}}, {"id": "10.1002/vzj2.20315", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:14:44Z", "type": "Journal Article", "created": "2024-02-28", "title": "Microbial mediated carbon and nitrogen cycling in the spatially heterogeneous vadose zone: A modeling study", "description": "Abstract

Spatially distributed properties of the subsurface result in varying water saturation and preferential flow paths, which lead to heterogeneous solute transport patterns and heterogeneous microbial environments. This, in turn, influences the distribution of nutrients and energy gradients, microbial biomass, and activity thereof. By their very nature, current field sampling techniques do not resolve subsampling scale heterogeneities in microbial biomass and activity, resulting in inaccurate estimates of microbially mediated carbon and nitrogen turnover in the heterogeneous subsurface. Thus, in this study, we undertook a numerical modeling approach to study the impact of spatial heterogeneity on microbially mediated carbon and nitrogen turnover in the vadose zone. We adapted an established biogeochemical process network that captures a variety of respiration pathways, carbon decomposition strategies, and microbial life processes to simulate microbially mediated carbon and nitrogen turnover in variably saturated spatially heterogeneous settings, using an established numerical tool (OGS#BRNS). The fractionation of microbial communities into active and inactive states, as well as immobile and mobile states followed could be linked to the bulk average saturation. Lastly, we identified three reactive systems, distinguished by the rate ratio of aerobic respiration and transfer of oxygen from the air to the water phase, to evaluate the impact of spatial heterogeneity on carbon and nitrogen removal in subsurface heterogeneous domains. Specifically, when this ratio is approximately 1, there is no impact on carbon removal, while when this ratio is very high, then carbon removal decreases as the domain tends to be oxygen limited.Land-use changes often have significant impact on the water cycle, including changing groundwater/surface-water interactions, modifying groundwater recharge zones, and increasing risk of contamination. Surface runoff in particular is significantly impacted by land cover. As surface runoff can act as a carrier for contaminants found at the surface, it is important to characterize runoff dynamics in anthropogenic environments. In this study, the relationship between surface runoff and groundwater recharge in urban areas is explored using a top-down water balance approach. Two empirical models were used to estimate runoff: (1) an updated, advanced method based on curve number, followed by (2) bivariate hydrograph separation. Modifications were added to each method in an attempt to better capture continuous soil-moisture processes and explicitly account for runoff from impervious surfaces. Differences between the resulting runoff estimates shed light on the complexity of the rainfall\uffe2\uff80\uff93runoff relationship, and highlight the importance of understanding soil-moisture dynamics and their control on hydro(geo)logical responses. These results were then used as input in a water balance to calculate groundwater recharge. Two approaches were used to assess the accuracy of these groundwater balance estimates: (1) comparison to calculations of groundwater recharge using the calibrated conceptual HBV Light model, and (2) comparison to groundwater recharge estimates from physically similar catchments in Switzerland that are found in the literature. In all cases, recharge is estimated at approximately 40\uffe2\uff80\uff9345% of annual precipitation. These conditions were found to closely echo those results from Swiss catchments of similar characteristics.Drainage channels with step-pool system are widely used to control debris flow. The blocking of debris flow often gives rise to local damage at the steps and ba?es. Hence, the estimation of impact force of debris flow is crucial for designing step-pools channel. Existing empirical models for impact pressure prediction cannot consider the influence of baffle shape. In this work, a three-dimensional smoothed particle hydrodynamics (SPH) study on the impact behaviour of debris flows in step-pool systems is presented, where debris material is modelled using the regularizedBingham model. The SPH method is first checked using the results from two laboratory tests. Then it is used to investigate the influence of bafflee shape and flow density. Numerical results show that the impact pressure at the first ba?e highly depends on the ba?e shape; however, the largest impact pressure usually occurs at subsequent baffles due to the violent impact induced by jet flows. The peak impact pressure at the first ba?e initially grows with increasing flow density; however, it starts to drop as density is beyond a threshold. Based on the numerical results, an empirical relation considering the influence of ba?e shape is proposed for better prediction of debris impact pressure.

", "keywords": ["Civil and Environmental Engineering", "bepress|Engineering", "0211 other engineering and technologies", "02 engineering and technology", "Geotechnical Engineering", "01 natural sciences", "Engineering", "engrXiv|Engineering", "bepress|Engineering|Civil and Environmental Engineering", "engrXiv|Engineering|Civil and Environmental Engineering|Geotechnical Engineering", "13. Climate action", "engrXiv|Engineering|Civil and Environmental Engineering", "bepress|Engineering|Civil and Environmental Engineering|Geotechnical Engineering", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s10346-020-01410-w.pdf"}, {"href": "https://doi.org/10.1007/s10346-020-01410-w"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Landslides", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10346-020-01410-w", "name": "item", "description": "10.1007/s10346-020-01410-w", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10346-020-01410-w"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-05-06T00:00:00Z"}}, {"id": "10.1007/s10546-021-00618-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:20Z", "type": "Journal Article", "created": "2021-04-28", "title": "Thermal Submesoscale Motions in the Nocturnal Stable Boundary Layer. Part 1: Detection and Mean Statistics", "description": "Abstract

Submesoscale motions within the stable boundary layer were detected during the Shallow Cold Pool Experiment conducted in the Colorado plains, Colorado, U.S.A. in 2012. The submesoscale motion consisted of two air layers creating a well-defined front with a sharp temperature gradient, and further-on referred to as a thermal submesofront (TSF). The semi-stationary TSFs and their advective velocities are detected and determined by the fibre-optic distributed-sensing\uffc2\uffa0(FODS) technique. An objective detection algorithm utilizing FODS measurements is able to detect the TSF boundary, which enables a detailed investigation of its spatio\uffe2\uff80\uff93temporal statistics. The novel approach in data processing is to conditionally average any parameter depending on the distance between a TSF boundary and the measurement location. By doing this, a spatially-distributed feature like TSFs can be characterized by point observations and processes at the TSF boundary can be investigated. At the TSF boundary, the air layers converge, creating an updraft, strong static stability, and vigorous mixing. Further, the TSF advective velocity of TSFs is an order of magnitude lower than the mean wind speed. Despite being gentle, the topography plays an important role in TSF formation. Details on generating mechanisms and implications of TSFs on the stable boundary layer are discussed in Part 2.

", "keywords": ["Topography", "550", "13. Climate action", "Submesoscale motion", "0207 environmental engineering", "500", "02 engineering and technology", "Stable boundary layer", "01 natural sciences", "Fibre optics ; Submesoscale motion ; Research Article ; Stable boundary layer ; Topography", "Fibre optics", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s10546-021-00618-0.pdf"}, {"href": "https://doi.org/10.1007/s10546-021-00618-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Boundary-Layer%20Meteorology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10546-021-00618-0", "name": "item", "description": "10.1007/s10546-021-00618-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10546-021-00618-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-28T00:00:00Z"}}, {"id": "10.1007/s10546-021-00619-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-23T16:15:20Z", "type": "Journal Article", "created": "2021-04-28", "title": "Thermal Submeso Motions in the Nocturnal Stable Boundary Layer. Part 2: Generating Mechanisms and Implications", "description": "Abstract

In the stable boundary layer, thermal submesofronts (TSFs) are detected during the Shallow Cold Pool experiment in the Colorado plains, Colorado, USA in 2012. The topography induces TSFs by forming two different air layers converging on the valley-side wall while being stacked vertically above the valley bottom. The warm-air layer is mechanically generated by lee turbulence that consistently elevates near-surface temperatures, while the cold-air layer is thermodynamically driven by radiative cooling and the corresponding cold-air drainage decreases near-surface temperatures. The semi-stationary TSFs can only be detected, tracked, and investigated in detail when using fibre-optic distributed sensing (FODS), as point observations miss TSFs most of the time. Neither the occurrence of TSFs nor the characteristics of each air layer are connected to a specific wind or thermal regime. However, each air layer is characterized by a specific relationship between the wind speed and the friction velocity. Accordingly, a single threshold separating different flow regimes within the boundary layer is an oversimplification, especially during the occurrence of TSFs. No local forcings or their combination could predict the occurrence of TSFs except that they are less likely to occur during stronger near-surface or synoptic-scale flow. While classical conceptualizations and techniques of the boundary layer fail in describing the formation of TSFs, the use of spatially continuous data obtained from FODS provide new insights. Future studies need to incorporate spatially continuous data in the horizontal and vertical planes, in addition to classic sensor networks of sonic anemometry and thermohygrometers to fully characterize and describe boundary-layer phenomena.

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