Characteristics of Individual Storms and Their Spatial Distributions in China
Received date: 2008-08-29
Revised date: 2009-01-09
Online published: 2009-03-25
Supported by
Natoinal Basic Research Program of China, No.2007CB407203
The statistical characteristics of individual storms are the basis for rainfall event simulation. This paper selected hourly precipitation data from May to September covering the period 1954-2001 from 62 weather stations throughout China to analyze the individual storm characteristics. The individual storms in China obey the gamma distribution by using chi-square test. Only several stations did not pass the test due to the poorly simulated effects for extreme events. Five indexes including two parameters in gamma distribution and the 90th, 95th and 99th percentiles of individual rainfall amount were used in the method of K means clustering. The results present a distribution of five zonal regions from southeast to northwest, with the decreasing ranking of the skewness, heterogeneity and dispersion for the individual rainfall amount during May to September in China. The regionalization of individual rainfall amount is the basis for estimating regional parameters in storm-based simulation models.
XIE Yun,LIN Xiaojuan,YIN Shuiqing,HE Qinghua . Characteristics of Individual Storms and Their Spatial Distributions in China[J]. Acta Geographica Sinica, 2009 , 64(3) : 323 -330 . DOI: 10.11821/xb200903007
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