Publications

International journal papers

2013
Herbst, M., Friborg, T., Schelde, K., Jensen, R., Ringgaard, R., Vasquez, V., Thomsen, A. G., Søgaard, H. (2013): Climate and site management as driving factors for the atmospheric greenhouse gas exchange of a restored wetland. Biogeosciences, 10, 39–52. doi:10.5194/bg-10-39-2013. Download.

Karan, S., Engesgaard, P., Looms, M.C., Laier, T., Kazmierczak, J. (2013): Groundwater flow and mixing in a wetland-stream system: Field study and numerical modeling. Journal of Hydrology, 488, 73-83, doi:10.1016/j.jhydrol.2013.02.030.

Submitted
Andreasen, M., Andreasen, L.A., Sonnenborg, T., Bircher, S., Jensen, K.H. (2013): Estimation of regional groundwater recharge using data from a distributed soil moisture network. Submitted to Hydrology and Earth System Sciences.

Auken, E., Kirkegaard, C. and Christiansen, A.V.: em1dinv part A: A highly versatile and robust inversion code implementing accurate system forward modeling and arbitrary model constraints. Geophysical Prospecting.

Auken, E., Kirkegaard, C., Christiansen A.V. (2013): Inversion of electrical and electromagnetic data: Comprehensive system forward modeling and arbitrary 5 model constraints (Part I). Submitted to Geophysical Prospecting.

Guzinski, R., Anderson, M.C., Kustas, W.P., Nieto, H., Sandholt, I. (2013): Using a thermal-based two source energy balance model with time-differencing to estimate surface energy fluxes with day-night MODIS observations. Submitted to Hydrology and Earth System Sciences.

He, X., Sonnenborg, T., Refsgaard, J.C., Vejen, F., Jensen, K.H. (2013): Evaluation of the value of radar QPE data and rain gauge data for hydrological modeling. Submitted to Water Resources Research.

Karlsson, I., T.O. Sonnenborg, J.C. Refsgaard, and K.H. Jensen (2013), Evaluating the influence of long term historical climate change on catchment hydrology - using drought and flood indices, Submitted to Hydrology and Earth System Sciences.

Kirkegaard, C., Auken, E: Em1dinv part B: A parallel, scalable and memory efficient inversion code for very large scale airborne EM surveys. Geophysical Prospecting.

Kirkegaard, C. and Auken, E. (2013): Inversion of electrical and electromagnetic data: A parallel, scalable and memory efficient inversion code for very large scale surveys (part II). Submitted to Geophysical Prospecting.

Ringgaard, R., Herbst, H., Friborg, T.: Partitioning forest evapotranspiration: Interception evaporation and the impact of canopy structure, local and regional advection. Journal of Hydrology.

Sebok, E., Duque, C., Kazmierczak, J., Engesgaard, P., Nilsson, B., Karan, S., Frandsen, M. (2013): High-resolution Distributed Temperature Sensing to detect seasonal groundwater discharge to Lake Væng, Denmark. Submitted to Water Resources Research.

Vásquez, V., Thomsen, A., Iversen, B., Schelde, K., Ringgaard, R. (2013):  Integrating lysimeter drainage and eddy covariance flux measurements in a groundwater recharge model. Submitted to Journal of Hydrological Sciences.

2012
Bircher, S., Balling, J.E., Skou, N., Kerr, Y. (2012): Validation of SMOS brightness temperatures during the HOBE airborne campaign, Western Denmark. IEEE Transactions on Geoscience and Remote Sensing, 50,5, doi:10.1109/TGRS.2011.2170177.

Bircher, S., Skou, N., Kerr, Y.: Validation of SMOS L1C and L2 products and important parameters of the retrieval algorithm in the Skjern River Catchment, Western Denmark. IEEE Transactions on Geoscience and Remote Sensing. doi:10.1109/TGRS.2012.2215041

Bircher, S., Skou, N., Jensen, K.H., Walker, J.P., and Rasmussen, L. (2012): A soil moisture and temperature network for SMOS validation in Western Denmark. Hydrology and Earth System Sciences, 16, 1-18, doi:10.5194/hessd-16-1-2012. Download.

Haarder, E.B., Binley, A., Looms, M.C., Doetsch, J., Nielsen, L., Jensen, K.H. (2012): Comparing plume characteristics inferred from cross-borehole geophysical data. Vadose Zone Journal, 11, doi:10.2136/vzj2012.003. Download.

Kirkegaard, C., Foged, N., Auken, E., Christiansen, A. V., and Sørensen, K. I., (2012): On the value of including x-component data in 1D modeling of electromagnetic data from helicopterborne time domain systems in horizontally layered environments: Journal of Applied Geophysics, 84, 64-69

Ringgaard, R., Herbst, H., Friborg, T.: Partitioning of forest evapotranspiration: The impact of edge effects and canopy structure. Agricultural and forest meteorology. http://dx.doi.org/10.1016/j.agrformet.2012.07.001. Download.

Stisen, S., Højberg, A. L., Troldborg, L., Refsgaard, J. C., Christensen, B. S. B., Olsen, M., and Henriksen, H. J. (2012): On the importance of appropriate precipitation gauge catch correction for hydrological modelling at mid to high latitudes, Hydrol. Earth Syst. Sci., 16, 4157-4176, doi:10.5194/hess-16-4157-2012. Download.


Special Issue of The Vadoze Zone Journal published February 2011

Fu, S., Sonnenborg, T., Jensen, K.H., He X. (2011): Impact of precipitation Spatial Resolution on the Hydrological Response of an Integrated Distributed Water Resources Model. Vadose Zone Journal. 10:25-36. doi:10.2136/vzj2009.0186. Download.

Haarder, E.B., Looms, M.C., Jensen, K.H., Nielsen, L. (2011): Visualizing unsaturated flow phenomena using reflection ground penetrating radar. Vadose Zone Journal. 10:84-97. doi:10.2136/vzj2009.0188. Download.

He, X., Vejen, F., Stisen, S., Sonnenborg, T., Jensen K.H. (2011): An Operational Weather Radar–Based Quantitative Precipitation Estimation and its Application in Catchment Water Resources Modeling. Vadose Zone Journal. 10:8-24, doi:10.2136/vzj2010.0034. Download.

Herbst, M., Friborg, T., Ringgaard, R., Søgaard H. (2011): Catchment wide atmospheric greenhouse gas exchange as influenced by land use diversity. Vadose Zone Journal. 10:67-77. doi:10.2136/vzj2010.0058. Download.

Jensen, J.K., Engesgaard, P. (2011): Nonuniform Groundwater Discharge across a Streambed: Heat as a Tracer. Vadose Zone Journal. 10:98-109. doi:10.2136/vzj2010.0005. Download.

Jensen, K. H., Illangasekare, T.H. (2011): HOBE – a hydrological observatory in Denmark. Vadose Zone Journal. 10:1-7, doi:10.2136/vzj2011.0006. Download.

Kidmose, J., Engesgaard, P. (2011): Spatial distribution of seepage patterns at a flow-though lake: Lake Hampen, Denmark. Vadose Zone Journal. 10:110-124. doi:10.2136/vzj2010.0017. Download.

Kirkegaard, C., Sonnenborg, T.O., Auken, E., Jørgensen, F., (2011): Salinity distribution in heterogeneous coastal aquifers mapped by high-powered AEM. Vadose Zone Journal, 10:125-135. doi:10.2136/vzj2010.0038. Download.

Ringgaard, R., Herbst, M., Friborg, T., Schelde, K., Thomsen, A.G., Søgaard, H (2011): Energy fluxes above three disparate surfaces in a temperate mesoscale coastal catchment, Vadose Zone Journal. 10:54-66. doi:10.2136/vzj2009.0181. Download.

Roosmalen, L.V., Christensen, J.H., Jensen, K.H., Sonnenborg, T.O. (2011): Comparison of Hydrological Simulations of Climate Change Using Perturbation of Observations and Distribution-Based Scaling. Vadose Zone Journal. 10:136-150. doi:10.2136/vzj2010.0112. Download.

Schelde, K., Ringgaard, R., Herbst, M., Thomsen, A., Friborg, T., Søgaard, H. (2011): Comparing evapotranspiration rates estimated from atmospheric flux and TDR soil moisture measurements. Vadose Zone Journal, 10:78-83. doi:10.2136/vzj2010.0060. Download.

Stisen, S., Højbjerg, A.L., Refsgaard, J.C., Sonnenborg, T., Troldborg, L. (2011): Evaluation of climate input biases and water balance issues using a coupled surface-subsurface model. Vadose Zone Journal. 10:37-53. doi:10.2136/vzj2010.0001. Download.

2011
He, X., Refsgaard, J.C., Sonnenborg, T.O., Vejen, F., Jensen, K. H. (2011): Statistical analysis of the impact of radar rainfall uncertainties on water resources modeling. Water Resources Research. 47, W09526, doi:10.1029/2011WR010670.

Herbst, M., Friborg, T., Ringgaard, R., Soegaard, H. (2011): Interpreting the variations in atmospheric methane fluxes observed above a restored wetland. Agricultural and Forest Meteorology. 151, 841-853, doi:10.1016/j.agrformet.2011.02.002.

Nieto, H., Sandholt, I., Aguado, I., Chuvieco, E., & Stisen, S. (2011): Air temperature estimation with MSG-SEVIRI data: Calibration and validation of the TVX algorithm for the Iberian Peninsula. Remote Sensing of Environment, 115: 107-116, doi:10.1016/j.rse.2010.08.010.

Stisen, S., McCabe, M.F., Refsgaard, J.C., Lerer, S., Butts, M.B. (2011): Model parameter analysis using remotely sensed pattern information in a multi-constraint framework. Journal of Hydrology, 409, 337-349. doi: 10.1016/j.jhydrol.2011.08.030.

2010
Nieto, H., Aguado, I,. Chuvieco, E., Sandholt, I. (2010): Dead fuel moisture estimation with MSG-SEVIRI data. Retrieval of meteorological data for the calculation of the Equilibrium Moisture Content. Agricultural and Forest Meteorology. DOI: 10.1016/j.agrformet.2010.02.007.

van Roosmalen, L., Christensen, J.H.,Butts, M.B., Jensen, K.H., Refsgaard, J.C. (2010). An intercomparison of regional climate model data for hydrological impact studies in Denmark, Journal of Hydrology, 380 (3-4), 406-419.

2009
Auken, E., Christiansen, A.V., Westergaard, J. A., Kirkegaard, C., Foged, N., Viezzoli, A., (2009): An integrated processing scheme for high-resolution airborne electromagnetic surveys, the SkyTEM system. Exploration Geophysics, 40, 184-192.

Van Roosmalen, L., Sonnenborg, T.O, Jensen, K.H. (2009): Quantifying the effects of climate change and land use change on water resources in Denmark using an integrated watershed model. Water Resources Research, 45, W00A15, doi:10.1029/2007WR006760.
 

International conference proceedings and abstracts

2012
Andreasen, M., Andreasen, L.A., Bircher, S., Sonnenborg, T., Jensen, K.H. (2012): Estimation of regional recharge using data from a distributed soil moisture network. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Andreasen, M., Andreasen, L.A., Bircher, S., Sonnenborg, T., Jensen, K.H. (2012): Estimation of regional recharge in the HOBE catchment using data from a distributed soil moisture network. AGU Fall meeting (3-7 December 2012, San Francisco).

He, X., Vejen, F., Refsgaard, J. C., Jensen, K. H. (2012). Six-year continuous simulation of water resources using C-band radar QPE data at Skjern river catchment, Denmark. 7th European Conference on Radar in Meteorology and Hydrology. (June 24-29, Toulouse, France).

Bircher, S., Merlin, O., Andreasen, L., Andreasen, M., Sonnenborg, T., Jensen, K.H., Kerr, Y.: Estimation of the effective SMOS soil moisture sampling depth over the Danish Validation/Calibration site in the Skjern River Catchment. IEEE Geoscience and Remote Sensing Symposium (July 22-27, Munich, Germany).

Bircher, S., Balling, J.E., Skou, N., Jensen, K.H., Kerr, Y. (2012): SMOS Validation in the Skjern River Catchment, Denmark. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Duque, C., Kinnear, J., Engesgaard, P., Binley, A., Haider, K., Sonnenborg, T. (2012): Studying freshwater discharge to Ringkøbing Fjord (Denmark) with direct measurements and EM31. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Duque, C., Kinnear, J., Engesgaard, P., Binley, A., Haider, K., Sonnenborg, T., Jensen, S.: Characteristics of the near shore-line freshwater discharge to Ringkøbing Fjord (Denmark), p. 71-79, TIAC (April 24-26, Alicante).

Duque, C., Engesgaard, P., Looms, M. C.: Full tensor representation of anisotropy in hydraulic conductivity: Effects of simulating discharge of groundwater to lakes, XIX International conference on Computational Methods in Water Resources. pp. 72-79. CMWR 2012. (June 17-21, University of Illinois at Urbana-Champaign).

Duque, C., Kinnear, J., Engesgaard, P., Binley, A., Haider, K., Sonnenborg, T.: Study of the saltwater-freshwater interface with EM-31 and direct measurements: Implications for the discharge pattern to Ringkøbing Fjord (Denmark), pp. 64-68. 22nd Salt Water Intrusion Meeting. (June 17-22, Armacao dos Buzios-RJ).

Guzinski, R., Nieto, H., Stisen, S. (2012): Evaluation of two, thermal based, surface energy flux models over the HOBE area. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Guzinski, R., Anderson M., Kustas W., Nieto H., Sandholt I.(2012): Using dual temperature difference two source energy balance model and MODIS data to estimate surface energy fluxes at regional scales in northern latitudes. EGU General Assembly, Vienna. (22-27 April 2012).

Haider, K., Duque, C., Sonnenborg, T., Engesgaard, P. (2012): Identification and estimation of groundwater inflow to a brackish coastal lagoon: Field observations and numerical steady-state modeling. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Haider, K., P. Engesgaard, T.O. Sonnenborg, S. Jensen, C. Duque (2012): Identification and estimation of groundwater inflow into a brackish lagoon: field observations and modeling of seasonal changes in discharge. Proceedings from 22nd Salt Water Intrusion Meeting, Buzios-RJ, 17-22 June 2012, SWIM2012, 22, 174-177.

He, X., Sonnenborg, T., Vejen, F., Jensen, K.H. (2012): Using radar QPE for continuous surface water and groundwater simulations at Skjern river catchment. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

He, X., Jensen, K.H, Sonnenborg, T.O., Jørgensen, F., Christensen, A.-S.H., Møller, R.R. (2012): Analysing the effects of geological uncertainty on groundwater model predictions by applying multi-points geostatistical simulations. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Herbst, M., Friborg, T., Jensen, R., Schelde, K., Soegaard, H., Thomsen A.G. (2012): Climate and management as driving factors for the total greenhouse gas budget of a restored wetland. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Jensen, K.H. (2012): HOBE – A hydrological observatory. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Jensen, R., Friborg, T.,Herbst, M., Ringgaard, R., Soegaard, H. (2012): Measured and modeled exchange of carbon dioxide from a Danish agricultural site. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Kirkegaard, C. and Auken, E.: Efficient and scalable algorithms for the inversion of very large AEM datasets. (March, SAGEEP, Tucson).

Kirkegaard, C., Auken, E. (2012): Efficient and scalable algorithms allowing for coupled inversion of large hydrogeophysical datasets. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Knadel, M., Peng, Y., Thomsen, A., Greve, M.H., Schelde, K. (2012): Vis-NIR sensor fusion for local, regional and global calibrations of soil organic carbon content. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Larsen, M.A.D., Jensen, K.H., Refsgaard, J.C., Christensen, J.H., Butts, M., Drews, M. (2012): Coupling of a climate-hydrological model: Initial studies on characteristics and parameterization. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Larsen, M.A.D., Refsgaard, J.C., Jensen, K.H., Christensen, J.H., Butts, M., Drews, M. (2012): Improved Hydrological Predictions by the Coupling of Land-Surface-Atmosphere Processes. AGU Fall meeting (3-7 December 2012, San Francisco).

Madsen, H. (2012): Data assimilation in environmental modeling. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Nieto, H. (2012): Radiative transfer modeling for net radiation estimation. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Peng, Y.,Knadel,M., Greve, M.H., Thomsen, A., Schelde, K. (2012): Background data and research plans for a new agricultural site. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Poulsen, J. B., Rasmussen, K. R, Ovesen, N.B. (2012): Hydrograph estimating in streams with non-stable stage-discharge relationships. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Poulsen, J. B., Rasmussen, K. R. Ovesen, N. B., Jensen, J. L. (2012): On the strategy of hydrograph estimation in streams with non-stable stage-discharge relationships. EGU General Assembly (April 23-27, Vienna, Austria).

Rasmussen, J., Madsen, H. (2012): Data Assimilation in Hydrological Models: Evaluation of Filter Performances. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Rasmussen, S.H. (2012): Land surface – atmosphere feedbacks by coupled climate-hydrological model. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Sebök, E., Duque, C., Engesgaard, P., Bøgh, E. (2012): Distributed Temperature Sensing as a method to identify groundwater discharge zones and in-stream sedimentation processes in soft-bedded streams. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Sebök, E., Duque, C., Engesgaard, P., Bøgh, E. (2012). Distributed Temperature Sensing as a method to identify groundwater discharge zones and in-stream sedimentation processes in soft-bedded streams. EGU General Assembly (April 23-27, Vienna, Austria).

Stisen, S., Sonnenborg, T., Refsgaard, J.C. (2012): Multi objective calibration and evaluation of a complex surface-subsurface-atmosphere model. HOBE – TR32 – TERENO Joint Workshop, Sandbjerg (1-4 April 2012).

Vásquez V., Schelde K., Thomsen A., Iversen B.V.:  Evaluating Lysimeter Drainage Against Soil Deep Percolation Modeled with Profile Soil Moisture, Field Tracer Propagation, and Lab Measured Soil Hydraulic Properties. Soil Science Society of America Meetings, Soil Physics and Hydrology Session. (Oct 21-24, Cincinnati, OH, USA)

Vásquez V., Schelde K., Thomsen A., Iversen B.V.:  Integrating lysimeter based evapotranspiration and eddy covariance flux in a simple soil water flow model. EUROSOIL Conference, Lysimeters and water flow session. (July 2-5, Bari, Italy)

Vásquez V., Schelde K., Thomsen A., Iversen B.V.: Effect of soil deep percolation variability on lysimeter based evapotranspiration estimates and evaluation against eddy covariance flux measurements at a spring barley field. HOBE-TERENO-TR32 Joint Workshop. (April 1-4, Sønderborg, Denmark)

2011
Ajami, H., Stisen, S., McCabe, M., Evans, J.: Toward Improved Estimation of Groundwater Recharge and Evapotranspiration Using Coupled vs. Integrated Hydrologic Models. IUGG Conference, (June-July 2011, Melbourne, Australia).

Ajami, H., Stisen, S., McCabe, M., Evans, J.: Toward Improved Estimation of Groundwater Recharge and Evapotranspiration Using Coupled vs. Integrated Hydrologic Models. European Geosciences Union Meeting (2011, Vienna, Austria).

Bircher, S., Balling, J. E., Skou, N., Kerr, Y.: SMOS validation in the Skjern River Catchment, Western Denmark. SMOS Science Workshop (27-29 September 2011, Arles, France).

Foged, N., Christiansen, A.V., Auken, E.: Verification of SkyTEM data to groundbased soundings by upward continuation. EAGE Near Surface proceedings 2011.

Gruhier, C., Mialon, A., Juglea, S., Albitar, A., Bicher, S., Pellarin, T. and Kerr, Y.: SMOS soil moisture product evaluation over various validation/calibration sites. International Geoscience and Remote Sensing Symposium (IGARSS, 24-29 July 2011, Vancouver, Canada).

Gruhier, C., Mialon, A., Juglea, S., Albitar, A., Bicher, S., Pellarin, T. and Kerr, Y.: Results of the Evaluations of the SMOS L2SM Product over various CALibration/VALidation Sites. SMOS Science Workshop (27-29 September 2011, Arles, France).

Haarder, E. B., Looms, M. C, Binley, A, Nielsen, L, Jensen, K. H.: Estimation of recharge by long-term monitoring of tracer movement using cross borehole geophysical methods. NovCare: Novel methods for subsurface characterization and monitoring - from theory to practice. (May 9-11, 2011, Cape Cod, USA). Download.

He, X., Vejen, F., Refsgaard, J.C., Jensen, K.H.: Uncertainty analysis of radar QPE in distributed hydrological modeling at Skjern River catchment. 35th Conference on Radar Meteorology. Pittsburgh, Pennsylvania, 2011.

He, X., Jensen, K.H, Sonnenborg, T.O., Jørgensen, F., Christensen, A.-S.H., Møller, R.R.: Analysing the effects of geological uncertainty on groundwater model predictions by applying multi-points geostatistical simulations. ModelCARE 2011 (18-22 September 2011, Leipzig, Germany).

He, X., Jensen, K.H, Sonnenborg, T.O., Jørgensen, F., Christensen, A.-S.H., Møller, R.R.: Analysing the effects of geological uncertainty on groundwater model predictions by applying multi-points geostatistical simulations. AGU Fall Meeting (5-9 December 2011, San Francisco).

Kinnear, J., Engesgaard, P., Duque, D., Haider, K., Binley, A.: Mapping Submarine Groundwater Discharge into Ringkøbing Fjord, Denmark. AGU Fall Meeting (5-9 December 2011, San Francisco).

Karan, S. Engesgaard, P.: Investigation of Hyporheic Flow Using a High Resolution Temperature Grid: Visualization and Simulation. AGU Fall Meeting (5-9 December 2011, San Francisco).

Karan P., P. Engesgaard, and T. Laier, (2011), Characterizing Groundwater-Stream Interaction at Catchment Scale: Holtum Stream, Western Denmark. Proceedings of the Modflow and More 2011: Integrated Hydrologic Modeling, June 5-8, Colorado School of Mines, p. 187.

Kerr, Y., Al Bitar, A., Cabot, F., Gruhier, C., Jacquette, E., Juglea, S., Leroux, D., Mialon, A., Richaume, P. Zribi, M., Wigneron, J.-P., Novello, N., Mahmoodi, A., Waldteufel, P., Lopez Baeza, E., Calvet, J.-C., Ferrazzoli, P., Rahmoune, R., Rudiger, C., Walker, J., Sahoo, A., Wood, E., Bindlish, R., Jackson, T., Delwart, S., Lawrence, H., Bircher, S., Peischl, S.: SMOS Mission and validation exercises: A general overview. SMOS Science Workshop (27-29 September 2011, Arles, France).

Kirkegaard, C., Christiansen, A.V. Auken, E.: Hybrid  Inversion of Airborne TEM Data – Mixed Precision Responses for Tunable Performance and Accuracy. EAGE Near Surface proceedings 2011, A03.

Looms, M.C, Hansen, T.M., Haarder, E.B., Jensen, K.H., Scholer, M, and A. Binley. Estimation of recharge by inversion of soil temperature profiles. NovCare: Novel methods for subsurface characterization and monitoring - from theory to practice. (May 9-11, 2011, Cape Cod, USA).

Mendiguren, G., Martín, M.P., Nieto, H., Proud, S, Guzinsky, R., Riaño, D., Sandholt, I.: A comparation of evapotranspiration and evaporative fraction estimates using the triangle method with MSG-SEVIRIR, MODIS and LANDSAT 5TM. 3rd iLeaps Science Conference 2011 (18-23 September 2011, Garmisch-Partenkirchen, Germany)

Poulsen, J. B., Rasmussen, K. R, Jensen, J. L, Ovesen, N. B.: Estimating stream discharge using stage and multi-level acoustic Doppler velocimetry. AGU Fall Meeting (5-9 December 2011, San Francisco).

2010
Auken, E., Kirkegaard, C., Ribeiro, J., Foged, N., Kok, A: The use of airborne electromagnetic for efficient mapping of salt water intrusion and outflow to the sea: SWIM21 - 21st Salt Water Intrusion Meeting proceedings, 53-56.

Bircher, S., Balling, J. E., Skou, N.: SMOS Cal/Val Activities in the Skjern River Catchment, Western Denmark. SMOS Validation and Retrieval Team (SVRT) Workshop (29-30 November 2010, ESRIN, Frascati, Italy).

Bircher, S., Balling, J., and Skou, N.: SMOS validation activities at different scales in the Skjern River Catchment, Western DK. ESA Living Planet Symposium (28 June - 2 July 2010, Bergen).

Davis, A., Y. Ley-Cooper, Kirkegaard, C.: SkyTEM system calibration: Two systems, one dataset: ASEG Extended Abstracts 2010, (1) 1-4.

Hallikainen, M., Kainulainen, J., Sievinen, P., Seppänen, J., Rouhe, E., Dall’Amico, J., Schlenz, F., Loew, A., Bircher, S., Montzka, C.: SMOS Cal/Val 2010 Activities and RFI Research with Airborne HUT-2D Radiometer. URSI Commission F Microwave Signatures (URSI-F, 4-8 October 2010, Florence, Italy).

He, X., T. O. Sonnenborg, F. Vejen, and K. H. Jensen.: Evaluation of radar precipitation estimation in long term water resources modeling at catchment scale. Western Pacific Geophysics Meeting. (22-25 June 2010, Taipei, Taiwan.).

Herbst, M., Friborg, T., Ringgaard, R., and Henrik, S.: Interpreting the variations in soil and canopy respiration observed in a spruce forest in Denmark. 24th New Phytologist Symposium (11-14 April 2010, Oxford).

Herbst, M., Friborg, T., Ringgaard, R., and Henrik, S.: Two years of eddy flux data of both CO2 and CH4 from a restored wetland in western Denmark. NORDFLUX Workshop (7-10 September 2010, Iceland).

He, X., Vejen, F., Sonnenborg, T.O., Jensen, K.H.: Investigation of long term water resources modeling by using radar and rain gauge measured precipitation data. 6th European Conference on Radar in Meteorology and Hydrology. (6-10 September 2010, Sibiu, Romania.).

Kainulainen, J., Rautiainen, K., Sievinen, P., Seppänen, J., Rouhe, E., Hallikainen, M., Dall'Amico, J., Schlenz, F., Loew, A., Bircher, S., Montzka, C.: SMOS calibration and validation activities with airborne interferometric radiometer HUT-2D during spring 2010. International Geoscience and Remote Sensing Symposium (IGARSS, 25-30 July 2010, Honolulu, HI, USA), 702-705.

Kirkegaard, C., Auken E.: Optimizing an existing inversion code. EAGE Near Surface 2010 (6-8 September, Zurich).

Kirkegaard, C., Auken, E., Sonnenborg, T., Jørgensen, F.: Airborne TEM investigations of salinity distribution in coastal aquifers: The Ringkoebing lagoon case" American Geophysical Union Fall Meeting (13-17 December 2010, San Francisco).

Nieto, H., Sandholt, I., Ringgaard, R., Herbst, M., Stisen, S. & Friborg,T.: Combining ENVISAT AATSR and MERIS imagery for the retrieval of evapotranspiration in a two-source resistance energy balance model. Remote Sensing and Hydrology 2010, IAHS (September 2010, Jackson Hole, Wyoming). Download.

Nieto, H., Sandholt, I., Rasmussen, M..O., Herbst, M., Ringgaard, R. & Friborg,T. (2010). Optical and thermal multiangular measurements for the estimation of evapotranspiration on an eddy covariance flux tower. 3rd International Symposium on Recent Advances in Quantitative Remote Sensing, (Valencia, Spain 2010). Download.

Poulsen, J.B., Rasmussen, K.R., Ovesen N. B.: Estimating Discharge using Multi-level Velocity Data from Acoustic Doppler Instruments. American Geophysical Union Fall Meeting (13-17 December 2010, San Francisco).

Stisen, S. and McCabe, M. F.: Surface temperature for spatial optimization of distributed hydrological models - a multi-constraint approach. Remote Sensing and Hydrology 2010, IAHS (September 2010, Jackson Hole, Wyoming). Download.

Stisen, S. and McCabe, M.F. (Submitted) Analyzing parameter sensitivities in a complex distributed hydrological model using remotely sensed surface temperatures. Remote Sensing and Hydrology 2010 (Proceedings of the symposium held at Jackson Hole, Wyoming, USA, September 2010) (IAHS Publ. 3XX, 2011).

Vásquez V., Thomsen A.: Calibration of a capacitance probe for groundwater recharge modeling based on soil moisture dynamics. First International Conference and Exploratory Workshop on Soil Architecture and Physico-Chemical Functions. CESAR. (30 November - 2 December, Research Centre Foulum, Tjele, Denmark)

2009
Bircher, S., Skou, N.: Planning of a large-scale soil moisture network for the validation of surface soil moisture data from the L-band passive microwave radiometer SMOS: Skjern River Catchment, Western DK. Nordic Remote Sensing Days (22-23 October 2009, Helsinki).

Bircher, S., Skou, N.: The Danish SMOS Cal/Val Site: HOBE. SMOS and Retrieval Team Readiness Review Workshop (11-13 March 2009, Lisbon).

He, X., Stisen, S., Vejen, F., Jensen K.H.: Investigation of Precipitation Input Scenarios in Hydrological Modeling - Prospects for Applying Radar Data. American Geophysical Fall Meeting, San Francisco, USA (14-18 December, 2009).

He, X., Vejen, F., Jensen K.H.: The Operational Radar Based Quantitative Precipitation Estimation in Denmark and its Potential Application in Hydrological Modeling. 34th conference on Radar Meteorology (5-9 October 2009, Williamsburg, Virginia).

Herbst, M., Ringgaard, R., Friborg, T., Søgaard, H: Environmental control of methane fluxes over a Danish peatland. American Geophysical Fall Meeting, San Francisco, USA (14-18 December, 2009).

Jensen, K.H.: The hydrological observatory HOBE (invited presentation). International workshop on patterns in soil-plant-atmosphere Systems: monitoring, modelling and data assimilation, Transregional Collaborative Research Centre 32 (8 June 2009, Aachen, Germany).

Karan, S., Engesgaard, P., Looms, M.C., Laier, T.: Characterizing groundwater-stream interaction at catchment scale. American Geophysical Fall Meeting, San Francisco, USA (14-18 December, 2009).

Kidmose, J., Engesgaard, P., Nilsson, B., Looms, M.C., Boldreel, L.O.: Seepage between a Regional Aquifer and a Flow-through Lake in a Melt Water Outwash Plain: Evidence of off-shore exchange. American Geophysical Fall Meeting, San Francisco, USA (14-18 December, 2009).

Ringgaard, R., Herbst, M., Friborg, T., Søgaard, H.: Variation of Evapotranspiration as Function of Surface Type. American Geophysical Fall Meeting, San Francisco, USA (14-18 December, 2009).

2008
Haarder, E.B., Looms, M.C., Nielsen, L., Jensen, K.H.: Assessment of spatial flow patterns in unsaturated sandy alluvial sediments using high- resolution GPR. American Geophysical Union Fall Meeting, San Francisco, USA (15-19 December 2008).

Jensen, K.H.: The hydrological observatory HOBE (invited presentation). First Biennial Colloquium CUAHSI (15 July 2008, Boulder, Colorado).

Jensen, K.H.: The hydrological observatory HOBE (invited presentation). American Geophysical Fall Meeting, San Francisco, USA (15-19 December 2008).

Karlsson, D. et. al.: The Influence of Temperature on the Performance of Dielectric Soil Moisture Probes. GSA, ASA-CSSA-SSSA, and GCAGS 2008 Joint Annual Meeting, Celebrating the International Year of Planet Earth (5-9 October 2008, Houston, Texas).

Looms, M.C., Haarder, E.B., Nielsen, L., Jensen, K.H., Rasmussen, K.R.: Hydrogeophysical investigations of spatial flow patterns in unsaturated sandy alluvial sediments. European Geosciences Union, EGU2008-A-04461, (2008).


Danish journal papers

2012
Ringgaard, R., Herbst, M., Friborg, T. (2012): Nye målinger af overfladespecifik fordampning. Vand og Jord 19(4), 152-156.

2011
Herbst, M., Ringgaard, R., Schelde, K. (2011): Skjern Enge som rollemodel. Aktuel Naturvidenskab, nr. 3/2011, 33-37.

2010
Karlsson, I., Sonnenborg, T., Jensen K.H. (2010): Hydrologiske konsekvenser af historiske og fremtidige klimatiske ændringer i Vestjylland. Tidsskrift for Geografisk Information, Geoforum Perspektiv, nr. 17, 32- 39.

2009
Engesgaard, P., Jensen, J.K., Karan, S., Kidmose, J., Nilsson, B. (2009): Varme som tracer for udveksling mellem grundvand og overfladevand. Vand og jord. 16(3). 109-113.

Herbst, M., Ringgaard, R., Friborg, T., Søgaard, H. (2009): Forøger vådområder den globale opvarmning? Vand og Jord. 16(3), 84-89.

Van Roosmalen, L., Sonnenborg, T., Jensen K.H. (2009): Effekt af ændringer i klima og arealanvendelse på vandkredsløbet i Vestjylland. Vand og Jord. 16(4), 133-135.

2008
Sonnenborg, T., Roosmalen, L.v., Jensen, K.H. (2008): Hvordan påvirker klimaændringer vandbalance og grundvandsstand? Plantekongres. 2008, 266-267.


Technical reports
2011
Refsgaard, J.C., Stisen, S., Højbjerg, A.L., Olsen, M., Henriksen, H.J., Børgesen, C.D., Vejen, F., Kern-Hansen, C., Blicher-Mathiesen, G. (2011): Vandbalance i Danmark - Vejledning i opgørelse af vandbalance ud fra hydrologiske data for perioden 1990-2010. GEUS rapport 2011/77.

2009
Vejen, F. (2009): HOBE projektet - et hydrologisk forskningsprojekt. DMI Teknisk Rapport 09-03, Drift af Spildevandskomitéens Regnmålersystem. Årsnotat 2008 (ed. R. S. Thomsen), København 2009.

2008
Sonnenborg, T., Roosmalen, L.v., Jensen, K.H., Brandt, G. (2008): Effects of future climate change on water resources in Denmark, Report by Geological Survey of Denmark and Greenland, Ministry of Climate and Energy. 69 p.


Popular science
2009
Sonnenborg, T., Jensen, K.H., Søgaard, H., Friborg, T., Engesgaard, P., Kidmose, J. (2009): Fremtidens vandressourcer i Danmark. Geoviden. nr. 2. Geocenter Danmark. Download

2008
Jensen, K.H. (2008): Center for Hydrology. HOBE - a Hydrological Observatory. VILLUM KANN RASMUSSEN FONDEN. Download.


Newspaper articles, press releases, and TV interviews
2010
Andersen, P. (2010): Lup på det skæve Vandmark. Berlingske Tidende. 22. March. Download.

2009
TV2 Midt Vest: News spot on the SkyTEM investigations over Ringkøbing fjord, 18 August 2009.

Aarhus Universy’s website: Geologer fra Aarhus Universitet jagter drikkevand under Ringkøbing Fjord. 2009. Read story.

Casper Kirkegaard, press release, 18 August 2009. Download.

2008
Jensen, K.H., Sonnenborg, T.: Bedre indsigt i klimaændringers påvirkning af vandressourcen. Feature article in the newspaper Information, 2. September 2008.


Local meetings, workshops, and lectures
2011
Engesgaard P. & Nielsen J.: Grundvand-vandløbssystemer: Hvor siver grundvandet ind, og hvad betyder grundvandet biologisk/økologisk for vandløbsfiskene? Hydrology Day (26. October, 2011, Odense).

2009
Auken, E.: Kortlægning af potentielle grundvandsressourcer under Ringkøbing Fjord med luftbårne geofysiske metoder. Hydrology Day (22. October 2009, Odense). Download

Bircher, S. & Skou, N.: Soil Moisture. Measured by Microwave Radiometers: Airborne and from Space (SMOS). Hydrology Day (22. October 2009, Odense).

Bircher, S.: Soil moisture in the Skjern River Catchment measured from air and space. The VKR Foundation's visit at the agricultural site (28. August 2009, Voulund). Download

Herbst, M.: Udveksling af drivhusgasser mellem forskellige vegetationstyper og atmosfæren. Hydrology Day (22. October 2009, Odense). Download

Jensen, K.H.: Hydrological Observatory - HOBE. Hydrology Day (22. October 2009, Odense). Download

Jensen, K.H.: HOBE – et hydrologisk observatorium – Center for Hydrologi –  VKR Center of Excellence. The VKR Foundation's visit at the agricultural site (28. August 2009, Voulund).

Jensen, K.H.: HOBE – et hydrologisk laboratorium. Research Platform Water, 29. January 2009.

Jensen, K.H.: Klimaændringer og vandressourcer. Lectures at Danish University Extension, 26. March 2009.

Karan, S.: WP4: Undersøgelse af interaktionen mellem grundvand og overfladevand. Hydrology Day (22. October 2009, Odense). Download

Looms, M.C.: Nye hydrogeofysiske målemetoder. Hydrology Day (22. October 2009, Odense). Download

Ringgaard, R.: Flux-målinger af fordampning og drivhusgasser. Præsentation af datakommunikation og database. The VKR Foundation's visit at the agricultural site (28. August 2009, Voulund). Download

Ringgaard, R.: Flux-målinger af evapotranspiration - overfladens betydning for fordampningsrater. Hydrology Day (22. October 2009, Odense).

Schelde, K.: Jordfugtighed og grundvandsdannelse - og opskalering fra punkt til markskala. Hydrology Day (22. October 2009, Odense).Download

Schelde, K.: Presentation of HOBE for 10 professors from China Agricultural University (CAU). Aarhus University, (2. October 2009.).

Schelde, K., Thomsen, A.: Jordens vandindhold. The VKR Foundation's visit at the agricultural site (28. August 2009, Voulund).

Sonnenborg, T.: Klimaændringer i et historisk perspektiv. Central Denmark Region, (27. October 2009.).

Stisen, S.: Hydrologisk modellering i HOBE. Hydrology Day (22. October 2009, Odense). Download

Vejen, F.: Nedbørradar og nedbørkorrektion. Hydrology Day (22. October 2009, Odense). Download

PhD theses
2012
Bircher, S.: SMOS validation in the Skjern River Catchment, Denmark. DTU. Download.

Kirkegaard, C.: Advances in processing, modeling and application of high resolution helicopter TEM data. Download pending.

Ringgaard, R.: On Variability of Evapotranspiration. The Role of Surface Type and Vegetation. Department of Geography and Geology, University of Copenhagen. Download.

2011
He, X.: Weather radar based quantitative precipitation estimation in modeling of catchment hydrology. Department of Geography and Geology, University of Copenhagen. Download.


Master theses
2012
Andreasen, L.A., Andreasen, M.: Estimation of regional recharge using data from a distributed soil moisture network. Department of Geography and Geology, University of Copenhagen, in progress.

Uglebjerg, T.: Using stable isotopes for estimation of recharge. Department of Geography and Geology, University of Copenhagen, in progress.

2011
Karlsson, I.: Historical developments of the meteorology and hydrology in Skjern catchment. Department of Geography and Geology, University of Copenhagen, in progress.

Jensen, R.: Measured and modeled exchange of carbon dioxide from a Danish agricultural site - application of a "big-leaf" model to estimate flux partitioning. Department of Geography and Geology, University of Copenhagen. Download.

2010
Mikkelsen, A.B.: Groundwater-surface water interactions in the Holtum stream catchment. Department of Geography and Geology, University of Copenhagen. Download.

2009
Haarder, E.: Hydrogeophysical Investigations of Unsaturated Flow. Department of Geography and Geology, University of Copenhagen. Download.

Jensen, J.K.: Heat as a tracer for estimation of groundwater-surface water interaction. Department of Geography and Geology, University of Copenhagen. Download.


Bachelor theses
2012
Jensen, S.: Variation in groundwater discharge to Ringkøbing Fjord (In Danish). Department of Geography and Geology, University of Copenhagen.

Ditlevsen, C.: Use of tracer hydrographs to study rainfall-runoff processes in headwater catchments. Department of Geography and Geology, University of Copenhagen.

2010
Hansen, K.W.T.: Impact of land-use on the water balance of the Skjern river catchment. Department of Geography and Geology, University of Copenhagen.

Feld, T.: Greenhouse gas budget for three vegetation surfaces. Department of Geography and Geology, University of Copenhagen.

Knudsen, K.F.: Water exchange between groundwater and surface water: a comparative analysis for three sites along Holtum stream. Department of Geography and Geology, University of Copenhagen. Download.

2009
Andreasen, M., Andreasen, L.A.: Evapotranspiration and water balance of Skjern catchment for the period 2008-2009 based on data from three land surfaces. Department of Geography and Geology, University of Copenhagen. Download.

Bisgaard, A., Nielsen, H.: Investigations of the impact of climate prediction uncertainty on the water balance. Department of Geography and Geology, University of Copenhagen.