气象研究与应用2018，Vol.39Issue(1)：24-27,65,5.
华北地区夏季降水的气候特征分析
Analysis of summer precipitation characteristics in North China
桑林 1余乐福2
作者信息
- 1. 华北空管局,北京,100621
- 2. 佛山市气象局,广东 佛山,528000
- 折叠
摘要
Abstract
In this paper, summer precipitation characteristics were analyzed by using the summer precipitation data of 1960-2011 at datum station 54511, combined with NCEP/NCAR reanalysis data and GPCP precipitation data. The results showed that summer precipitation data of a single station had distinct interannual and interdecadal characteristics and the characteristics of interdecadal variation were mainly determined by precipitation in July and August. The precipitation sequence was significantly correlated with the summer precipitation in North China, indicating that the single station data was representative for summer precipitation in North China. In addition, the proportion of summer precipitation to annual precipitation had an interdecadal mutation in 1996, from 74.4％ to 62.1％. At the same time, the proportion of precipitation in spring and autumn increased while which in winter remained almost unchanged. The correlation between the summer precipitation and the meridional wind of 200hPa presented the " silk road" type. The physical mechanism behind it could be that the " silk road" type affected the East Asian summer monsoon and then affected the precipitation in North China.关键词
华北/夏季降水/气候学/单站Key words
North China/summer precipitation/climatology/single station.分类
天文与地球科学引用本文复制引用
桑林,余乐福..华北地区夏季降水的气候特征分析[J].气象研究与应用,2018,39(1):24-27,65,5.
