Spatiotemporal Modeling of Monthly Precipitation in the Upper Shiyang River Watershed in West Central Gansu, Northwest China |
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Authors: | ZHANG Cunjie C P-A BOURQUE SUN Landong and Q K HASSAN |
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Institution: | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, Lanzhou Regional Climate Centre, Lanzhou 730020,Lanzhou Regional Climate Centre, Lanzhou 730020, Faculty of Forestry and Environmental Management, University of New Brunswick, 28 Dineen Drive, Fredericton, New Brunswick, E3B 6C2, Canada,Lanzhou Regional Climate Centre, Lanzhou 730020,Department of Geomatics Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada |
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Abstract: | This paper outlines a methodology to estimate monthly precipitation surfaces at 1-km resolution for the Upper Shiyang River watershed(USRW) in northwest China.Generation of precipitation maps is based on the application of a four-variable genetic algorithm(GA) trained on 10 years of weather and ancillary data,i.e.,surface air temperature,relative humidity,Digital Elevation Model-derived estimates of elevation,and time of year collected at 29 weather stations in west-central Gansu and northern Qinghai provin... |
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Keywords: | genetic algorithms model building MODIS products principal component analysis watershed delineation |
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