| Trend of extreme precipitation events over China in last 40 years |
| |
| 作者姓名： | 章大全 封国林 胡经国 |
| |
| 作者单位： | College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China;Laboratory for Climate Studies of China Meteorological Administration, National Climate Center, Beijing 100081,
China;Laboratory for Climate Studies of China Meteorological Administration, National Climate Center, Beijing 100081,China;The Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China |
| |
| 基金项目： | Project supported by the National
Natural Science Foundation of China (Grant No 40675044), the State
Key Development Program for Basic Research of China (Grant No
2006CB400503), and the Laboratory for Climate Studies of China
Meteorological Administration Climate Research Program (Grant No
LCS-2006-04). |
| |
| 摘 要： | Using the daily precipitation data of 740 stations in China from 1960 to 2000, the analysis on the variations and distributions of the frequency and the percentage of extreme precipitation to the annual rainfall have been performed in this paper. Results indicate that the percentage of heavy rains （above 25mm/day） in the annual rainfall has increased, while on average the day number of heavy rains has slightly reduced during the past 40 years. In the end of 1970s and the beginning of 1980s, both the number of days with extreme precipitation and the percentage of extreme precipitation abruptly changed over China, especially in the northern China. By moving t test, the abrupt change year of extreme precipitation for each station and its spatial distribution over the whole country are also obtained. The abrupt change years concentrated in 1978-1982 for most regions of northern China while occurred at various stations in southern China in greatly different/diverse years. Besides the abrupt change years of extreme precipitation at part stations of Northwest China happened about 5 years later in comparison with that of the country＇s average.
|
| 关 键 词： | 极端降雨事件 频率 急剧变化 大气物理学 |
| 收稿时间： | 2007-04-21 |
| 修稿时间： | 8/8/2007 12:00:00 AM |
Trend of extreme precipitation events over China in last 40 years |
| |
| Zhang Da-Quan,Feng Guo-Lin and Hu Jing-Guo.Trend of extreme precipitation events over China in last 40 years[J].Chinese Physics B,2008,17(2):736-742. |
| |
| Authors: | Zhang Da-Quan Feng Guo-Lin and Hu Jing-Guo |
| |
| Institution: | [1]College of Physics Science and Technology, Yangzhou University, Yangzhou 225009, China; [2]Laboratory for Climate Studies of China Meteorological Administration, National Climate Center, Beijing 100081, China; [3]The Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
| |
| Abstract: | Using the daily precipitation data of 740 stations in China from
1960 to 2000, the analysis on the variations and distributions of
the frequency and the percentage of extreme precipitation to the
annual rainfall have been performed in this paper. Results indicate
that the percentage of heavy rains (above 25mm/day) in the annual
rainfall has increased, while on average the day number of heavy
rains has slightly reduced during the past 40 years. In the end of
1970s and the beginning of 1980s, both the number of days with
extreme precipitation and the percentage of extreme precipitation
abruptly changed over China, especially in the northern China. By
moving t test, the abrupt change year of extreme precipitation for
each station and its spatial distribution over the whole country are
also obtained. The abrupt change years concentrated in 1978--1982
for most regions of northern China while occurred at various
stations in southern China in greatly different/diverse years.
Besides the abrupt change years of extreme precipitation at part
stations of Northwest China happened about 5 years later in
comparison with that of the country's average. |
| |
| Keywords: | extreme precipitation events frequency abrupt change extreme events |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|
