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Sensitivity of land surface processes to frozen soil permeability and surface water storage
Author(s) -
Takata Kumiko
Publication year - 2002
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/hyp.1148
Subject(s) - snowmelt , environmental science , water content , hydrology (agriculture) , water storage , spring (device) , moisture , surface water , permeability (electromagnetism) , groundwater , soil water , soil science , geology , snow , meteorology , geotechnical engineering , chemistry , geomorphology , environmental engineering , mechanical engineering , biochemistry , physics , membrane , engineering , inlet
Abstract The sensitivity of land surface processes to frozen soil permeability and surface water storage is examined, using a one‐dimensional land surface model that can be implemented in a climate model. The atmospheric conditions are specified at three stations in frozen ground regions of Russia. Soil moisture has its maximum in spring and minimum in summer, which corresponds with the observations. By taking the frozen soil permeability into consideration, both the wet zone above the thaw front in spring and the water uptake towards the freezing front in winter can be reproduced by the model. The surface depression storage increases the soil moisture in spring by holding snowmelt water and in summer after rainfall, which induces changes in the annual heat and water budget. The annual evaporation is reduced by the frozen soil permeability and it is enhanced by the surface storage. Copyright © 2002 John Wiley & Sons, Ltd.