TITLE

Application of the Versatile Soil Moisture Budget Model to Estimate Evaporation from Prairie Grassland

AUTHOR(S)
Hayashi, Masaki; Jackson, John F.; Xu, Ligang
PUB. DATE
June 2010
SOURCE
Canadian Water Resources Journal / Revue Canadienne des Ressourc;Summer2010, Vol. 35 Issue 2, p187
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Coupled hydrological modelling of land surface and groundwater is an effective tool for water resources management. The Versatile Soil Moisture Budget (VSMB) model is a simple land-surface model that has been widely used in the Canadian prairies to simulate soil moisture conditions of cropland. Its algorithm is suitable for coupling with a groundwater model, but VSMB has not been rigorously tested for grassland as such. The accuracy of simulated grassland evaporation was evaluated against three years of field data collected using the eddy-covariance technique near Calgary, Alberta. The current version of VSMB substantially underestimated evaporation. After modifications on growth stage parameters, radiation scheme, the drying curve function representing the ratio of actual to potential evaporation, and soil-column length, simulated evaporation was well within the error margin of observed values. In the semi-arid environment of the test site, simulated evaporation was relatively insensitive to soil water storage parameters but was sensitive to the drying curve function and soil-column length.
ACCESSION #
53397773

 

Related Articles

  • Magnitude and variability of land evaporation and its components at the global scale. Miralles, D. G.; De Jeu, R. A. M.; Gash, J. H.; Holmes, T. R. H.; Dolman, A. J. // Hydrology & Earth System Sciences;2011, Vol. 15 Issue 3, p967 

    A process-based methodology is applied to estimate land-surface evaporation from multi-satellite information. GLEAM (Global Land-surface Evaporation: the Amsterdam Methodology) combines a wide range of remotely-sensed observations to derive daily actual evaporation and its different components....

  • Constraining model parameters on remotely sensed evaporation: justification for distribution in ungauged basins? Winsemius, H. C.; Savenije, H. H. G.; Bastiaanssen, W. G. M. // Hydrology & Earth System Sciences Discussions;2008, Vol. 5 Issue 4, p2293 

    In this study, land surface related parameter distributions of a conceptual semidistributed hydrological model are estimated by employing time series of satellitebased evaporation estimates during the dry season as explanatory information. A key application for this approach is to identify part...

  • Variational assimilation of streamflow into operational distributed hydrologic models: effect of spatiotemporal adjustment scale. Lee, H.; Seo, D.-J.; Liu, Y.; Koren, V.; McKee, P.; Corby, R. // Hydrology & Earth System Sciences Discussions;2012, Vol. 9 Issue 1, p93 

    State updating of distributed rainfall-runoff models via streamflow assimilation is subject to overfitting because large dimensionality of the state space of the model may render the assimilation problem seriously under-determined. To examine the issue in the context of operational hydrology, we...

  • Soft combination of local models in a multi-objective framework. Fenicia, F.; Solomatine, D. P.; Savenije, H. H. G.; Matgen, P. // Hydrology & Earth System Sciences;2007, Vol. 11 Issue 6, p1797 

    Conceptual hydrologic models are useful tools as they provide an interpretable representation of the hydrologic behaviour of a catchment. Their representation of catchment's hydrological processes and physical characteristics, however, implies a simplification of the complexity and heterogeneity...

  • Modeling the Hydrological Effect on Local Gravity at Moxa, Germany. Hasan, Shaakeel; Troch, Peter A.; Boll, J.; Kroner, C. // Journal of Hydrometeorology;Jun2006, Vol. 7 Issue 3, p346 

    A superconducting gravimeter has observed with high accuracy (to within a few nm s-2) and high frequency (1 Hz) the temporal variations in the earth's gravity field near Moxa, Germany, since 1999. Hourly gravity residuals are obtained by time averaging and correcting for earth tides, polar...

  • Selecting the optimal method to calculate daily global reference potential evaporation from CFSR reanalysis data. Weiland, F. C. Sperna; Tisseuil, C.; Dürr, H. H.; Vrac, M.; van Beek, L. P. H. // Hydrology & Earth System Sciences Discussions;2011, Vol. 8 Issue 4, following p7355 

    Potential evaporation (PET) is one of the main inputs of hydrological models. Yet, there is limited consensus on which PET equation is most applicable in hydrological climate impact assessments. In this study six different methods to derive global scale reference PET time series from CFSR...

  • Edge influence of soil moisture at farmland-grassland boundary in agriculture-pasturage ecotone of Northern China. Liu Hong-lai; Zhang Wei-hua; Wang Kun; Zhao Na // Yingyong Shengtai Xuebao;Mar2009, Vol. 20 Issue 3, p659 

    In the agriculture-pasturage ecotone of Northern China, a typical zone with linear boundary of cropland and grassland was chosen to investigate its soil moisture regime, and the moving split-window technique was adopted to study the edge influence of soil moisture at the boundary. The results...

  • Global land-surface evaporation estimated from satellite-based observations.  // Hydrology & Earth System Sciences Discussions;2010, Vol. 7 Issue 5, p8479 

    No abstract available.

  • An optimality-based model of the coupled soil moisture and root dynamics. Schymanski, S. J.; Sivapalan, M.; Roderick, M. L.; Beringer, J.; Hutley, L. B. // Hydrology & Earth System Sciences;2008, Vol. 12 Issue 3, p913 

    The main processes determining soil moisture dynamics are infiltration, percolation, evaporation and root water uptake. Modelling soil moisture dynamics therefore requires an interdisciplinary approach that links hydrological, atmospheric and biological processes. Previous approaches treat...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics