A5007982450- Hydrology and Watershed Management Studies
- Groundwater flow and contamination studies
- Soil and Unsaturated Flow
- Soil Moisture and Remote Sensing
- Geophysical and Geoelectrical Methods
- Flood Risk Assessment and Management
- Precipitation Measurement and Analysis
- Meteorological Phenomena and Simulations
- Hydraulic Fracturing and Reservoir Analysis
- Plant Water Relations and Carbon Dynamics
- Groundwater and Isotope Geochemistry
- Geophysical Methods and Applications
- Climate change and permafrost
- Climate variability and models
- Cryospheric studies and observations
- Hydrology and Drought Analysis
- Hydrological Forecasting Using AI
- Seismic Imaging and Inversion Techniques
- Reservoir Engineering and Simulation Methods
- Soil Geostatistics and Mapping
- Geophysics and Gravity Measurements
- Seismic Waves and Analysis
- Geological Modeling and Analysis
- Landslides and related hazards
- Dam Engineering and Safety
University of Copenhagen
2015-2024
Geocenter Denmark
2007-2023
Lund University
2021
Danish Geodata Agency
2021
University of Bergen
2010-2019
Washington State University
2019
Flinders University
2019
University of Arizona
2019
University of Wisconsin–Madison
2019
University of Calgary
2019
Abstract The Soil Moisture Active Passive (SMAP) mission Level-4 Surface and Root-Zone (L4_SM) data product is generated by assimilating SMAP L-band brightness temperature observations into the NASA Catchment land surface model. L4_SM available from 31 March 2015 to present (within 3 days real time) provides 3-hourly, global, 9-km resolution estimates of (0–5 cm) root-zone (0–100 soil moisture conditions. This study presents an overview algorithm, validation approach, assessment versus in...
Abstract. In 2009, the International Soil Moisture Network (ISMN) was initiated as a community effort, funded by European Space Agency, to serve centralised data hosting facility for globally available in situ soil moisture measurements (Dorigo et al., 2011b, a). The ISMN brings together collected and freely shared multitude of organisations, harmonises them terms units sampling rates, applies advanced quality control, stores database. Users can retrieve from this database through an online...
Core Ideas Numerous studies have been conducted to develop and examine the accuracy of method. Cosmic‐ray neutron soil moisture estimates compare well with independent measurements. These are useful for modeling, data assimilation, calibration satellite products. Many used detector other applications; results promising. Since introduction cosmic‐ray method estimation, numerous test advance Almost 200 stationary systems installed worldwide, roving also started gain ground. The intensity...
The National Aeronautics and Space Administration Soil Moisture Active Passive (SMAP) mission has been validating its soil moisture (SM) products since the start of data production on March 31, 2015. Prior to launch, defined a set criteria for core validation sites (CVS) that enable testing key SM accuracy requirement (unbiased root-mean-square error <0.04 m<sup>3</sup>/m<sup>3</sup>). approach also includes other (“sparse network”) <i>in situ</i> measurements,...
Abstract. Climate change increases the occurrence and severity of droughts due to increasing temperatures, altered circulation patterns, reduced snow occurrence. While Europe has suffered from drought events in last decade unlike ever seen since beginning weather recordings, harmonized long-term datasets across continent are needed monitor support predictions. Here we present soil moisture data 66 cosmic-ray neutron sensors (CRNSs) (COSMOS-Europe for short) covering recent events. The CRNS...
This paper presents a quantitative comparison of plausible climate and land use change impacts on the hydrology large‐scale agricultural catchment. An integrated, distributed hydrological model was used to simulate changes in groundwater system its discharge rivers drains for two scenarios (2071–2100). Annual recharge increased significantly (especially B2 scenario), giving higher heads stream discharges amplifying seasonal dynamics significantly. Owing drier summers, irrigation volumes by...
Abstract. The Soil Moisture and Ocean Salinity Mission (SMOS) acquires surface soil moisture data of global coverage every three days. Product validation for a range climate environmental conditions across continents is crucial step. For this purpose, temperature sensor network was established in the Skjern River Catchment, Denmark. objectives article are to describe method implement suited SMOS validation, present sample collected by verify approach. design phase included (1) selection...
In this paper a short introduction is given to the Danish hydrological observatory—HOBE. We describe characteristics of catchment, which subject experimental and modeling investigations. An overview research reported in special section journal, includes 11 papers original covering precipitation, evapotranspiration, emission greenhouse gasses, unsaturated flow, groundwater–surface water interaction, climate change impacts on hydrology.
The 26 December 2004 tsunami caused widespread destruction and contamination of coastal aquifers across southern Asia. Seawater filled domestic open dug wells also entered the via direct infiltration during first flooding waves later as ponded seawater infiltrated through permeable sands that are typical aquifers. In Sri Lanka alone, it is estimated over 40,000 drinking water were either destroyed or contaminated. From February September 2005, a team United States, Lankan, Danish resource...
Improved understanding of unsaturated flow and transport processes is limited by the lack appropriate in situ measurement techniques. This study was conducted to determine whether two noninvasive cross‐borehole geophysical methods combined could be used estimate important zone parameters, namely pore water velocity longitudinal dispersivity. Cross‐borehole electrical resistivity tomography ground penetrating radar were temporal spatial variation content, respectively, during a 20‐d forced...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 412:273-282 (2010) - DOI: https://doi.org/10.3354/meps08682 Enrichment promotes learning in fish David A. Strand1,3, Anne C. Utne-Palm1, Per J. Jakobsen1, Victoria Braithwaite1,2, Knut H. Jensen1, G. V. Salvanes 1,* 1Department of Biology, University Bergen, Bergen 5020, Norway 2School Forest Resources and...
Core Ideas Awareness of hydrological observatories needs to be increased. These 23 papers document on four continents. Hydrological can help solve relevant and important scientific questions. Observation processes has a long‐standing tradition covering various climatic, hydrologic, geologic, geomorphologic conditions. observations are either organized in dedicated focused hydrology or within larger environmental that address from the atmosphere groundwater. In this special section, we...
Core Ideas HOBE provides an experimental catchment infrastructure. Measurements, experiments, and modeling are carried out. A number of research questions addressed; the primary one is closure water balance. The database available for data sharing. Danish hydrological observatory was established in 2007 a western part Denmark representing conditions temperate climate with groundwater‐dominated streamflow. In catchment, infrastructure has been where measurements, performed across range...
Abstract The cosmic ray neutron method was developed for intermediate‐scale soil moisture detection, but may potentially be used other hydrological applications. signal of different hydrogen pools is poorly understood and separating them difficult based on measurements alone. Including transport modeling accommodate this shortcoming. However, measured modeled neutrons are not directly comparable. Neither the scale nor energy ranges equivalent, exact sensitivity detectors unknown. Here a...
Abstract. Groundwater head and stream discharge is assimilated using the ensemble transform Kalman filter in an integrated hydrological model with aim of studying relationship between performance size. In attempt to reduce required number members, adaptive localization method used. The compared more common distance-based localization. terms hydraulic error members investigated for varying numbers spatial distributions groundwater observations or without assimilation parameter estimation....
Abstract The hydrological modeling community is aware that the validation of distributed models has to move beyond aggregated performance measures, like hydrograph assessment by means Nash‐Suitcliffe efficiency toward a true spatial model validation. Remote sensing facilitates continuous data and can be measured on similar scale as predictive thereby it serve suitable for human perception often described very reliable well‐trained source pattern comparison, which this study wants exploit. A...
Abstract Spatially distributed hydrological models are traditionally calibrated and evaluated against few spatially aggregated observations such as river discharge. This model evaluation approach does not enable an assessment of the predictive capabilities other states fluxes nor it give any insight into ability to mimic spatial patterns within a catchment. The current study explores multivariable optimization complex coupled surface–subsurface–atmosphere at catchment scale in attempt move...