[1]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(01):24-27,65.
　Sang Lin,Yu Lefu.Analysis of summer precipitation characteristics in North China[J].Journal of Meteorological Research and Application,2018,39(01):24-27,65.
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华北地区夏季降水的气候特征分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第39卷
期数:
2018年01期
页码:
24-27,65
栏目:
天气气候
出版日期:
2018-03-31

文章信息/Info

Title:
Analysis of summer precipitation characteristics in North China
作者:
桑林1;  余乐福2
1. 华北空管局, 北京, 100621;
2. 佛山市气象局, 广东 佛山, 528000
Author(s):
Sang Lin1;  Yu Lefu2
1. North China Air Administration Bureau, Beijing 100621;
2. Foshan Meteorological Bureau, Foshan Guangdong 528000
关键词:
华北; 夏季降水; 气候学; 单站
Keywords:
North China; summer precipitation; climatology; single station
分类号:
P466
摘要:
利用1960-2011年基准站54511的夏季降水数据，结合NCEP/NCAR再分析资料和GPCP降水资料，分析了夏季降水的气候特征。结果表明：单站数据显示夏季降水有着明显的年际和年代际变化特征，其中年代际变化特征主要由7月和8月降水决定。降水序列与华北区域平均的夏季降水序列显著相关，说明单站数据对华北地区夏季降水有着很好的代表性。夏季降水占全年降水的比重在1996年有年代际的突变，由之前的74.4%降低到62.1%。与此同时，春、秋季节的降水占比增加，而冬季基本不变。夏季降水与200hPa的经向风之间的相关呈现丝绸之路型，背后的物理机制可能是丝绸之路型影响了东亚夏季风，进而影响了华北地区的降水。
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.

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备注/Memo

备注/Memo:
收稿日期:2016-12-08。
作者简介:桑林(1987-),硕士,工程师,从事天气预报服务工作。
更新日期/Last Update: 1900-01-01