安徽农业科学2011，Vol.39Issue(36)：22408-22410,3.
近42年来东北地区夏季降水极值的时间特征分析
Temporal Variations of Summer Precipitation Extremum in the Northeast China in Recent 42 Years
摘要
Abstract
Daily rainfall amount of 93 weather stations from 1959 to 2000 was used to analyse the temporal change of summer rainfall extremes in the Northeast China. The result showed that the intensity of summer rainstorm increased, days reduced and the changes of rainstorm and precipitation were consistent. Extreme dry incident increased in recent 42 years , and it occurred extremely frequent since mid 1990s, which was one important reason for the occurrence of drought in Northeast China. Extreme rainy days were reducing and extreme rainy days were important factors influencing the total precipitation before mid 1990s, while precipitation intensity was important factors for the precipitation in summer after mid 1990s. The average precipitation in maximum three days showed no distinct features of interannual changes.关键词
夏季/降水极值/东北地区Key words
Summer/ Precipitation extremes/ Northeast China分类
农业科技引用本文复制引用
杨素英,赵秀勇..近42年来东北地区夏季降水极值的时间特征分析[J].安徽农业科学,2011,39(36):22408-22410,3.基金项目
国家自然科学基金青年基金项目(41105096) （41105096）
南京信息工程大学校科研基金项目(20090218#). （20090218#）
