Articles | Volume 11, issue 10
https://doi.org/10.5194/gmd-11-4085-2018
https://doi.org/10.5194/gmd-11-4085-2018
Model description paper
 | 
11 Oct 2018
Model description paper |  | 11 Oct 2018

Development and evaluation of a variably saturated flow model in the global E3SM Land Model (ELM) version 1.0

Gautam Bisht, William J. Riley, Glenn E. Hammond, and David M. Lorenzetti

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Cited articles

Alkhaier, F., Flerchinger, G. N., and Su, Z.: Shallow groundwater effect on land surface temperature and surface energy balance under bare soil conditions: modeling and description, Hydrol. Earth Syst. Sci., 16, 1817–1831, https://doi.org/10.5194/hess-16-1817-2012, 2012. 
Alley, W. M.: Ground Water and Climate, Ground Water, 39, 161–161, 2001. 
Amenu, G. G. and Kumar, P.: A model for hydraulic redistribution incorporating coupled soil-root moisture transport, Hydrol. Earth Syst. Sci., 12, 55–74, https://doi.org/10.5194/hess-12-55-2008, 2008. 
Anyah, R. O., Weaver, C. P., Miguez-Macho, G., Fan, Y., and Robock, A.: Incorporating water table dynamics in climate modeling: 3. Simulated groundwater influence on coupled land-atmosphere variability, J. Geophys. Res.-Atmos., 113, D07103, https://doi.org/10.1029/2007JD009087, 2008. 
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Most existing global land surface models used to study impacts of climate change on water resources routinely use different models for near-surface unsaturated soil and the deeper groundwater table. We developed a model that uses a unified treatment of soil hydrologic processes throughout the entire soil column. Using a calibrated drainage parameter, the new model is able to correctly predict deep water table depth as reported in an observationally constrained global dataset.