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1951-2005年燕山南麓夏季降水变化特征
引用本文:郝立生,毕宝贵.1951-2005年燕山南麓夏季降水变化特征[J].气候变化研究进展,2007,3(1):31-035.
作者姓名:郝立生  毕宝贵
作者单位:河北衡水市气象局 副局长
摘    要: 利用燕山南麓1951-2005年夏季降水资料和NCEP再分析资料,采用统计分析等方法,对燕山南麓夏季降水演变规律进行了研究。结果表明:近55 a来,燕山南麓夏季降水线性减少趋势显著,平均每10 a年减少29 mm,夏季降水在20世纪70年代末发生了一次气候突变。燕山南麓夏季降水和东亚夏季风变化周期不一致。燕山南麓夏季降水减少主要是由于亚洲中纬度地区和极地地区环流变化造成的。

关 键 词:燕山南麓  季风降水  东亚夏季风
文章编号:1673-1719(2007)01-0031-05
收稿时间:2006-2-22
修稿时间:2006-02-22

Tendency of Summer Rainfall at the Southern Foot of the Yanshan Mountains
Hao Lisheng, Bi Baogui.Tendency of Summer Rainfall at the Southern Foot of the Yanshan Mountains[J].Advances in Climate Change,2007,3(1):31-035.
Authors:Hao Lisheng  Bi Baogui
Institution:1 Hengshui Meteorological Bureau, Hengshui 053000, China;2 National Meteorological Centen China Meteorological Administration, Beijing 100081, China
Abstract:Based on the summer rainfall data at the southern foot of the Yanshan Mountains and NCEP reanalysis data,by using statistical methods and contrast analysis,the evolutional tendency of summer rainfall at the southern foot was analyzed.The results show as follow:the summer rainfall has shown an obviously linear decreasing tendency of 29 mm/10 a during the past 55 years,an abrupt climate change took place in the later 1970s.And change periods of the summer rainfall differ from those of the East Asian summer monsoon.The decrease of summer rainfall at the mountain foot is mainly due to the change of atmospheric circulation patterns over mid-latitudes of Asia and the Arctic region.
Keywords:southern foot of the Yanshan Mountains  summer rainfall  East Asian summer monsoon
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