5.3 Meteorology

There are altogether 210 rainfall stations and 14 meteorological stationsscattering around，as were illustrated in Figure 5-5 (A) and Figure 5-5(B).It is known that the rainfall and meteorological observations are pointrepresentative and the data should be interpolated onto the catchments.Theprecipitation and meteorological information was spatially interpolated usingThiessen polygon.

Figure 5-5 (A) Rainfall stations and Thiessen polygoninterpolation of upstream Hanjiang River

Figure 5-5 (B) Meteorological stations and Thiessen polygoninterpolation of upstream Hanjiang River

The rainy season of the study area lasts from May to September and thespatial averaged precipitation amount is approximately 900mm/year.Generally，the mean monthly precipitation from May to September is almost 4.2 time ......     （共1527字）    [阅读本文]>>