Fine Spatial Distribution of Precipitation on Chongqing Rugged Terrain

Based on the 1971—2000 monthly precipitation data observed at 34 meteorological stations in the Chongqing region and the 100 m×100 m DEM(Digital Elevation Model) of Chongqing,the spatial distribution of precipitation of Chongqing was studied.In light of the principles of mountain climatology and using GIS(Geographical Information Systems) technology,the factors affecting the spatial distribution of precipitation were analyzed,the model to simulate the spatial distribution of averaged monthly precipitation was established,and the spatial distribution of averaged monthly precipitation was computed.The results show that the precipitation increased with the elevation,and the maximum value of monthly precipitation appeared in the northeast mountainous region;and the seasonal change of precipitation in Chongqing was distinctive.