气象科学2011，Vol.31Issue(z1)：74-80,7.
1960-2008年淮河流域极端降水演变特征
The evolution characteristics of the extreme precipitation in Huaihe river basin during 1960-2008
摘要
Abstract
This paper studied the temporal and spatial variations of extreme precipitation in Huaihe river basin from 1960 to 2008 with the geo-spatial statistics, time series analysis and trends in diagnosis and other methods. The results showed that the extreme precipitation , precipitation intensity and the days of heavy rainfall had not significantly changed in annual and seasonal trend. The incidents without precipitation lasting over 15 d were increasing from south to north about 2-5 times per year, it happened the most in winter and the least in summer. The events with precipitation lasting over 5 d were increasing from northeast to southwest about 1-8 times per year. In the northwest of Huangchuan-Zhengyang-Zhengzhou this kind of events were the most in the fall, in other areas the events were the least in summer. In the more than 40% of sites the chance with no persistant precipitation had increased significantly. The climate trend rate was 0. 22-0. 60 times/a. It occurred the most in the 1970s during abruptly climatic change. The events of precipitation reduced obviously over 30% of the sites. The climate trend rate was - 0. 24 to -0. 70 times/a, no abruptly climatic change was found. There were no obvious relationship between persistant ( no) precipitation events and the annual precipitation.关键词
极端降水/持续无降水/持续降水Key words
Extreme precipitation/ Persistent no precipitation/ Persistent precipitation分类
天文与地球科学引用本文复制引用
陆志刚,张旭晖,霍金兰,王珂清,谢小萍..1960-2008年淮河流域极端降水演变特征[J].气象科学,2011,31(z1):74-80,7.基金项目
淮河流域气象开放研究基金项目(HRM200806) （HRM200806）
