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地理科学  2014 

中国年代际暴雨时空变化格局

, PP. 1281-1290

Keywords: 暴雨,年代际变化,时空格局,城市化,中国

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Abstract:

采用1951~2010年中国659个气象站点的日值降水数据,以中国气象局颁布的降水强度等级划分标准为依据,分别计算1951~1960、1961~1970、1971~1980、1981~1990、1991~2000、2001~2010年的年代际暴雨雨量、雨日和雨强,并统计了其相应的站点数目变化。结果表明,在时间上,中国年代际暴雨雨量和雨日显著增加,暴雨雨强也呈现增加趋势;在空间上,中国年代际暴雨雨量和雨日呈现出从东南沿海地区向华中和西南及环渤海地区逐渐扩张的梯度增加趋势,年代际暴雨雨强远不如暴雨雨量和暴雨雨日梯变明显。中国暴雨1951~2010年年代际时空变化格局很可能是在全球变暖大背景下中国地势与城市化共同作用的结果。

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