Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Functional behaviour of pedotransfer functions in soil water flow simulation
Soet, M. ; Stricker, J.N.M. - \ 2003
Hydrological Processes 17 (2003)8. - ISSN 0885-6087 - p. 1659 - 1670.
particle-size distribution - hydraulic-conductivity - uncertainty - retention - database - predict - balance
Soil hydraulic parameter values for large-scale modelling cannot be obtained by direct methods. Pedotransfer functions (PTFs) that relate soil hydraulic properties (SHPs) to generally available soil texture data may provide an alternative. A considerable number of PTF models has been developed, the application of three recent PTFs is evaluated. As a first step sets of SHPs derived from the PTFs are compared with measured sets of SHPs for three sites. No good agreement was found statistically between measured and PTF results or between PTF results. As a second step and from a practical point of view results for three hydrologically functional variables were compared and evaluated. The three selected functional variables are saturated hydraulic conductivity, k0, in relation to infiltration excess runoff, available soil water amounts for evapotranspiration and water table depth for a specified upward flux or capillary rise. Derived k0 distributions from PTFs show substantially less variance than from the measured data at all three sites. This can have a considerable impact on infiltration excess runoff, depending on the actual rainfall regime. Simulated available soil water amounts for evapotranspiration for some combinations of PTFs and sites are close to those obtained for measured SHPs, however, no consistency in results can be detected. Water table depths for specified upward flux densities using PTF derived SHPs are generally deeper than those based on measured SHPs and means a potentially higher water availability. Overall, differences in capillary rise among the selected PTFs and between measured and PTF based results are again inconsistent and show no clear relationship with soil texture. Finally, as a third step, effective SHPs were calculated by using spatially averaged texture as PTF input representing areal average behaviour. For these effective SHPs the calculated effective values for the three selected functional variables appear to be close to the areally averaged values obtained with step 2. The selected functional variables thus appear to depend linearly on the PTFs over the range for which the data are representative. This suggests that for our specific PTFs areal mean or effective values for the three functional variables can be obtained fairly accurately from a single measurement of a bulk collection of soil samples as input.
Representation of the seasonal hydrological cycle in climate and weather prediction models in West Europe
Dolman, A.J. ; Soet, M. ; Ronda, R.J. ; Hurk, B.J.J.M. van den - \ 2002
Unknown Publisher - 125 p.
The representation of the seasonal hydrological cycle in a regional climate model in west Europe
Dolman, A.J. ; Soet, M. ; Hurk, B.J.J.M. van den; IJpelaar, R.J.M. ; Ronda, R.J. - \ 2001
In: Soil-vegetation-atmosphere transfer schemes and large-scale hydrological models. Wallingford (UK), IAHS, 2001. IAHS Publ. 270 / Dolman, A.J., Hall, A.J., Kavvas, M.L., Oki, T., Pomeroy, J.W., - p. 11 - 18.
water - bodemfysica - hydrologie - klimaat - simulatiemodel
Representation of the seasonal hydrological cycle in climate and weather prediction models in West Europe
Dolman, A.J. ; Stricker, J.N.M. ; Feddes, R.A. ; Holtslag, A.A.M. ; Ronda, R.J. ; Bruin, H.A.R. de; Soet, M. ; Hurk, B.J.J.M. van den - \ 2001
Bilthoven : RIVM - ISBN 9789058510624 - 126
klimatologie - weersvoorspelling - bodemwater - waterbalans - ruimtelijke verdeling - regen - wolken - evapotranspiratie - hydrologische factoren - modellen - west-europa - hydrologische cyclus - aardoppervlak - climatology - weather forecasting - soil water - water balance - spatial distribution - rain - clouds - evapotranspiration - hydrological factors - models - western europe - hydrological cycle - land surface
Model conceptualisation and standard parameter values in a one-dimensional land surface scheme
Soet, M. ; Ronda, R.J. ; Stricker, J.N.M. ; Dolman, A.J. - \ 2000
In: Representation of the seasonal hydrological cycle in climate and weather pediction models in West Europe / Dolman, A.J., - p. 18 - 46.
Land Surface Scheme Conceptualisation and Parameter Values for Three Sites with Contrasting Soil and Climate
Soet, M. ; Ronda, R.J. ; Stricker, J.N.M. ; Dolman, A.J. - \ 2000
Hydrology and Earth System Sciences 4 (2000). - ISSN 1027-5606 - p. 281 - 293.
The objective of the present study is to test the performance of the ECMWF land surface module (LSM) developed by Viterbo and Beljaars (1995) and to identify primary future adjustments, focusing on the hydrological components. This was achieved by comparing off-line simulations against observations and a detailed state-of-the-art model over a range of experimental conditions. Results showed that the standard LSM, which uses fixed vegetation and soil parameter values, systematically underestimated evapotranspiration, partly due to underestimating bare soil evaporation, which appeared to be a conceptual problem. In dry summer conditions, transpiration was seriously underestimated. The bias in surface runoff and percolation was not of the same sign for all three locations. A sensitivity analysis, set up to explore the impact of using standard parameter values, found that implementing specific soil hydraulic properties had a significant effect on runoff and percolation at all three sites. Evapotranspiration, however affected only slightly at the temperate humid climate sites. Under semi-arid conditions, introducing site specific soil hydraulic properties plus a realistic rooting depth improved simulation results considerably. Future adjustments to the standard LSM should focus on parameter values of soil hydraulic functions and rooting depths and, conceptually, on the bare soil evaporation parameterisation and the soil bottom boundary condition. Implications of changing soil hydraulic properties for future large-simulations were explored briefly. For Europe, soil data requirements can be fulfilled partly by the recent data base HYPRES. Sandy and loamy sand soils will then cover about 65␘f Europe, whereas in the present model 100␘f the area is loam
Comparing SVAT schemes for different soil, vegetation and climate regimes
Soet, M. ; Ronda, R.J. - \ 1999
In: Geophysical Research Abstracts 1 (1999) 2, EGS - p. 470 - 470.
Estimation of soil hydraulic properties for a regional climate model
Soet, M. ; Stricker, J.N.M. - \ 1999
In: EOS Transactions 80 (1999) 46, AGU - p. F371 - F371.
Bodem-Vegetatie-Atmosfeer uitwisseling: bodemkundige aspecten
Soet, M. - \ 1999
In: Proceedings of the Climate Change and Biosphere Research Centre (CCB), Wageningen, 16-2-1999. - [S.l.] : [s.n.], 1999 - p. 38 - 38.
Intercomparison of the RACMO SVAT scheme with SWAPS
Ronda, R.J. ; Soet, M. - \ 1999
In: proceedings of the American Meteorological meeting, Januari 1999, Dallas, USA. - [S.l.] : [s.n.], 1999 - p. 218 - 218.
Intercomparison of the racmo svat scheme with swaps
Ronda, R.J. ; Soet, M. - \ 1999
In: Proceedings of the 11th conference on applied climatology, 10-15 Januari Dallas TX, AMS, Boston, 1999.. - [S.l.] : [s.n.], 1999 - p. 133 - 134.
Representation of the seasonal hydrological cycle in climate and weather prediction models in west Europe
Dolman, A.J. ; Soet, M. ; Ronda, R. ; Kabat, P. ; Bruin, H.A.R. de; Feddes, R.A. ; Kok, M.J.T. ; Verweij, W. - \ 1999
In: Dutch National Research Programme on Global Air Pollution and Climate Change: Proceedings of the first NRP-II symposium on climate change research, Garderen, the Netherlands, 29-30 October 1998 / Kok, M.T.J., Verweij, W., - p. 3 - 8.
waterbalans - meteorologie - weersvoorspelling - bodemwater - hydrologische cyclus - water balance - meteorology - weather forecasting - soil water - hydrological cycle
Efeda-Spain and Hapex-Sahel: a further analysis of data.
Soet, M. ; Stricker, J.N.M. ; Droogers, P. ; Esenbrink, J. - \ 1998
Wageningen : LUW (Rapport / Landbouwuniversiteit Wageningen, Afdeling Waterhuishouding 79) - 72
bodem - permeabiliteit - wijnbouw - wijngaarden - plantenfysiologie - plantenontwikkeling - wortels - spanje - niger - soil - permeability - viticulture - vineyards - plant physiology - plant development - roots - spain
Selected results.
Soet, M. ; Stricker, J.N.M. ; Droogers, P. ; Kabat, P. ; Elbers, J.A. ; Elsen, E. van den - \ 1998
In: Hydrologic Atmospheric Pilot Experiment in the Sahel (HAPEX): methods, measurements and selected results from the West Central Supersite / Kabat, P., Prince, S.D., Prihodko, L., - p. 55 - 67.
Soil science and hydrology: methods and measurement techniques.
Soet, M. ; Stricker, J.N.M. ; Droogers, P. ; Kabat, P. ; Elbers, J.A. ; Elzen, E. van den - \ 1998
In: Hydrologic Atmospheric Pilot Experiment in the Sahel (HAPEX): methods, measurements and selected results from the West Central Supersite / Kabat, P., Prince, S.D., Prihodko, L., - p. 32 - 53.
EFEDA-II: desertification processes in the Mediterranean area and their interlinks with the global climate. Subgroup II. Vegetation, soil physics; inventory and impacts.
Soet, M. ; Stricker, J.N.M. ; Droogers, P. - \ 1997
Wageningen : Wageningen Agricultural University
Part 3: Soil physical properties within the rootzone of the vine area of Tomelloso; local and spatial standpoint.
Haverkamp, R. ; Arrue, J.L. ; Soet, M. - \ 1997
Unknown Publisher
Water budget of maize on heavy clay in a continental climate : field experiment and model simulation : final report of the project "Evaporation estimation comparison"
Soet, M. ; Petrovic, P. ; Stricker, J.N.M. - \ 1996
Wageningen : Landbouwuniversiteit Wageningen (Rapport / Landbouwuniversiteit, Vakgroep Waterhuishouding 67) - 75
zware kleigronden - evapotranspiratie - hydrologie - maïs - modellen - onderzoek - bodemwaterbalans - zea mays - clay soils - evapotranspiration - hydrology - maize - models - research - soil water balance
Hydrologic Atmospheric Pilot EXperiment in the Sahel 2.
Stricker, J.N.M. ; Droogers, P. ; Soet, M. - \ 1996
Unknown Publisher - 60 p.
Handboek debietmeten in open waterlopen.
Boiten, W. ; Dommerholt, A. ; Soet, M. - \ 1995
Wageningen : Landbouwuniversiteit Wageningen (Rapport / Landbouwuniversiteit, Vakgroep Waterhuishouding 51) - 158
kanalen - kanalen, klein - stroming - vloeistoffen (fluids) - hydrodynamica - hydrologie - instrumenten (meters) - vloeistoffen (liquids) - meting - monitoring - snelheid - handboeken - netwerken - canals - channels - flow - fluids - hydrodynamics - hydrology - instruments - liquids - measurement - velocity - handbooks - networks
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