中国强降水过程时空集中度气候趋势
收稿日期: 2005-03-22
修回日期: 2005-07-06
网络出版日期: 2005-11-25
基金资助
国家科技基础性工作专项资金项目 (2001DEA30029-0604);江苏省自然科学基金面上项目(BK2005163)
Climatic Trends of Heavy Precipitation Spatial and Temporal Concentration in China
Received date: 2005-03-22
Revised date: 2005-07-06
Online published: 2005-11-25
Supported by
Concentrated fund item of national science and technology foundation work, No.2001DEA30029-0604; Jiangsu natural science foundation, NO.BK2005163
姜爱军, 杜银, 谢志清, 丁裕国 . 中国强降水过程时空集中度气候趋势[J]. 地理学报, 2005 , 60(6) : 1007 -1014 . DOI: 10.11821/xb200506014
Based on 740 stations daily precipitation datasets in China, the precipitation- concentration degree (PCD) and precipitation-concentration period (PCP) of different intensity durative precipitation events were calculated to analyze their statistical characteristics, mainly including spatial and temporal distributions, variations and climatic trends of the two parameters of the durative heavy precipitation events in China. It is proved that these two parameters of heavy rainfall can display the temporal inhomogeneity in the precipitation field. And it is also found that there is a good positive relationship between the precipitation-concentration degree and annual rainfall amount in eastern China and central China. This method can be applied in flood assessment and climate changing fields.
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