ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 33 Issue 11 > 2007,33(11):58-64. DOI:10.7519/j.issn.1000-0526.2007.11.009 Prev Next
Analysis of Precipitation Characteristics in Hubei Province and Their Influence on Flood/Drought in the Last 45 Years
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Abstract:
The rainfall data, which were accumulated from the 72 meteorological sta tions of Hubei Province from 1960 to 2004, and the data on the droughtstricken and floodstricken area, which were published on the webpage from the Ministr y of Agriculture of the People’s Republic of China (zzys.agri.gov.cn), are anal yzed and discussed. The investigation is based on following several aspects of c limate, for example the climatic tendency, the skewness of drought and flood as well as the frequency and intensity of the heavy precipitation occurrence. It ca n be found that in the last 45 years the annual rainfall amounts have a strong i ncreasing trend in the east of Hubei Province, especially in the southeast of th e Jianghan Plain, while the annual rain days are decreasing. The increase of the rainfall amounts is mainly result from increasing of the heavy rain or rainst orm. At the same time the intensity and the frequency of durative heavy precip itation eventsincrease also in this region annually. The analysis on the relationship between the droughtstricken or floodstricken area and the skewness of drought or flo od indicates that climate disasters result mainly from unbalanced spatial and te mporal distribution of precipitation. Furthermore all these factors, such as the increase in rainfall amount and intensity of rainfall, the decrease in lake are a, the natural sinking of the Jianghan Plain, etc., quicken the intensity an d frequency of drought or flood, on which the local governments should focused.
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