| 长江流域1960-2004年极端强降水时空变化趋势 |
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| 引用本文： | 苏布达,姜彤,任国玉,Chen Zhenghong.长江流域1960-2004年极端强降水时空变化趋势[J].气候变化研究进展,2007,3(Z1):45-50. |
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| 作者姓名： | 苏布达 姜彤 任国玉 Chen Zhenghong |
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| 作者单位： | Su Buda（Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;Laboratory for Climate Studies, China Meteorological Administration, Beijing 100081, China）
Jiang Tong（Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China）
Ren Guoyu（Laboratory for Climate Studies, China Meteorological Administration, Beijing 100081, China）
Chen Zhenghong（Wuhan Regional Climate Center, Wuhan 430074, China） |
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| 摘 要： | Recent trends of the rainfall, intensity and frequency of extreme precipitation (EP) over the Yangtze River Basin are analyzed in this paper. Since the mid-1980s the rainfall of EP in the basin has significantly increased, and the most significant increment occurred in the southeast mid-lower reaches, and southwest parts of the basin. Summer witnessed the most remarkable increase in EP amount. Both the intensity and frequency of EP events have contributed to the rising of EP amount, but increase in frequency contributed more to the increasing trend of EP than that in intensity. The average intervals between adjacent two EP events have been shortened. It is also interesting to note that the monthly distribution of EP events in the upper basin has changed, and the maximum frequency is more likely to occur in June rather than in July. The synchronization of the maximum frequency month between the upper and mid-lower reaches might have also increased the risk of heavy floods in the mid-lower reaches of the Yangtze River.
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| 关 键 词： | extreme precipitation event spatial and temporal pattern |
| 文章编号： | 1673-1719(2007)Suppl.-0045-06 |
| 修稿时间： | 2006年12月7日 |
Trends of Extreme Precipitation over the Yangtze River Basin of China in 1960-2004 |
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| Su Buda,Jiang Tong,Ren Guoyu,Chen Zhenghong.Trends of Extreme Precipitation over the Yangtze River Basin of China in 1960-2004[J].Advances in Climate Change,2007,3(Z1):45-50. |
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| Authors: | Su Buda Jiang Tong Ren Guoyu Chen Zhenghong |
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| Abstract: | Recent trends of the rainfall, intensity and frequency of extreme precipitation (EP) over the Yangtze River Basin are analyzed in this paper. Since the mid-1980s the rainfall of EP in the basin has significantly increased, and the most significant increment occurred in the southeast mid-lower reaches, and southwest parts of the basin. Summer witnessed the most remarkable increase in EP amount. Both the intensity and frequency of EP events have contributed to the rising of EP amount, but increase in frequency contributed more to the increasing trend of EP than that in intensity. The average intervals between adjacent two EP events have been shortened. It is also interesting to note that the monthly distribution of EP events in the upper basin has changed, and the maximum frequency is more likely to occur in June rather than in July. The synchronization of the maximum frequency month between the upper and mid-lower reaches might have also increased the risk of heavy floods in the mid-lower reaches of the Yangtze River. |
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| Keywords: | extreme precipitation event spatial and temporal pattern climate change the Yangtze River Basin |
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