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高原气象 2011
Spatial-Temporal Variations of Drought and Flood Intensities in Sichuan Region in the Last 50 Years
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Abstract:
The frequencies of drought and flood events in Sichuan were analyzed based on the daily precipitation data at 123 stations in summer from 1961 to 2007 and the NCEP/NCAR monthly reanalysis data,taking Z index method as classify the drought and flood grades.In addition,the EOF,REOF,linear trend,running t test,and wavelet analysis methods were used to analyze the temporal and spatial change trends of drought and flood events in Sichuan.The analyzed results are as follows: Drought and flood events in Sichuan re...
