| 长江流域极端降水时空分布和趋势 |
| |
| 引用本文： | 苏布达,姜彤,任国玉,陈正洪.长江流域极端降水时空分布和趋势[J].气候变化研究进展,2006,2(1):9-14. |
| |
| 作者姓名： | 苏布达 姜彤 任国玉 陈正洪 |
| |
| 作者单位： | 中国科学院 南京地理与湖泊研究所 |
| |
| 基金项目： | 中国气象局气候变化专项基金;中国科学院知识创新工程项目 |
| |
| 摘 要： | 1986年以来，长江流域的极端强降水出现了显著增加的趋势，突出表现在中下游地区。长江中下游地区极端降水量的增加，既是极端降水强度增强，也是极端降水事件显著增加的结果。长江流域极端降水变化主要发生在东南部和西南部。趋势分析表明，自20世纪80年代中期以来，长江流域上游极端降水事件峰值提前到6月份出现，与长江中下游极端降水峰值出现的时间几乎同步，这必将加大遭遇性洪水发生的机率。20世纪90年代以来长江洪水的频繁发生，与长江流域极端降水时空分布的变化密切相关。
|
| 关 键 词： | 极端强降水 时空分布 气候变化 长江流域 |
| 文章编号： | 1673-1719（2006）01-0009-06 |
| 收稿时间： | 2005-10-08 |
| 修稿时间： | 2005-10-082005-11-02 |
Observed Trends of Precipitation Extremes in the Yangtze River Basin during 1960 to 2004 |
| |
| SU Buda,JIANG Tong,REN Guoyu,CHEN Zhenghong.Observed Trends of Precipitation Extremes in the Yangtze River Basin during 1960 to 2004[J].Advances in Climate Change,2006,2(1):9-14. |
| |
| Authors: | SU Buda JIANG Tong REN Guoyu CHEN Zhenghong |
| |
| Institution: | 1 Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing Jiangsu 210008, China; 2 Laboratorv for Climate Studies, China Meteorological Administration, Beijing 100081, China; 3 Wuhan Regional Climate Center, Wuhan Hubei 430074, China |
| |
| Abstract: | Recent trends of amount, intensity and frequency of extreme precipitation for the Yangtze River basin are analyzed in this paper. Since mid-1980s, extreme precipitation amount in the Yangtze River basin has significantly increased. The most significant increase occurred in the middle and lower reaches of the Yangtze River. Summer witnessed the most rcmarkable increase in extreme precipitation amount. Both intensity and frequency of extreme precipitation events have contributed to the rising of the extreme precipitation amount, but the increase of frequency contributes more to the positive trend of precipitation amount than the intensity. The average intervals between two extreme precipitation events have been shortened. It is also interesting to note that the intra-annual distribution of extreme precipitation events in the upper reaches has changed, and the maximum frequency is more likely to occur in June rather than in July. This makes the intra-annual distribution of extreme precipitation events in the upper reaches more like that in the middle and lower reaches, and it middle and lower reaches of the Yangtze River. might have also increased the risk of larger floods in the |
| |
| Keywords: | extreme precipitation events spatial and temporal distribution climate change the Yangtze River basin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《气候变化研究进展》浏览原始摘要信息 |
| 点击此处可从《气候变化研究进展》下载免费的PDF全文 |
