Comparison of different structures for a monthly water yield model in seasonally snow-covered mountainous watersheds of Iran |
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| Authors: | M MOUSSAVI J FEYEN G WYSEURE |
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| Institution: | 1. Laboratory of Land Management, Faculty of Agricultural Sciences , Katholieke Universiteit Leuven , Kardinaal Mercierlaan 92, B3030 , Leuven , Belgium;2. Department of Agricultural and Environmental Science , University of Newcastle upon Tyne , Newcastle , upon Tyne , UK |
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| Abstract: | Abstract This paper attempts to search for a suitable structure of a monthly water yield model applicable for seasonally snow-covered mountainous catchments located in a semiarid area. In this respect several model structures based on a soil water balance concept were compared. The main distinction between the different structures was made by the inclusion of either a linear or a nonlinear transformation element for the conversion of overland flow or baseflow into total runoff. A combined water balance model having two main elements, a soil storage element generating excess water, and a transformation element conceptualized by a linear storage-discharge relationship, was found to be the most accurate. |
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