首页|湖南省雨季与中国南方地区不同雨期相关分析

湖南省雨季与中国南方地区不同雨期相关分析

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
利用1961-2013年中国784个气象站逐日降水观测资料分析了中国中东部地区降雨的逐候变化、湖南省雨季与中国南方地区不同雨期的相关性及不同雨期降雨的空间分型.结果表明:中国区域的25°-30°N全年均有一条雨带维持,春季增强,秋季减弱,先后出现了江南春雨、华南前汛期、长江梅雨和华西秋雨.江南春雨降雨量与同期湖南省降雨量的高相关区为除湘西和湘西北地区外的湖南省其他区域;华南前汛期降雨量与同期湖南省降雨量的高相关区为湘中及其以南区域,梅雨期降雨量与同期湖南省降雨量的高相关区为湘中及其以北区域;华西秋雨降雨量与同期湖南省降雨量的高相关区为湘西北和湘北地区.中国南方地区不同雨期降雨量与湖南省不同雨期高相关区的降雨量具有较好的一致性,江南春雨期降雨量与同期湖南省降雨量的一致性最好,华南前汛期降雨量和华西秋雨期降雨量次之.中国南方地区不同雨期降雨量的前4个空间模态能较好的表现南方地区不同雨期降雨量的主要空间分布特征,4个模态分别为全区一致变化、南北反位相变化、江南地区与其他地区反位相变化、东西反位相变化.
Correlations between rainy season of Hu'nan province and different rainy stages of South China
Based on the daily precipitation data from 784 meteorological stations in China during 1961 to 2013,the pentad variation of precipitation over central-eastern China,the spatial classifications of rainfall in the different rain stages in south China and their correlations with precipitation during rainy season in Hu'nan were investigated.Re-sults show that a rain band enhanced in spring and weakened in autumn at 25°-30°N area is maintained throughout the year,which induces different processes including the spring persistent rains (SPR),the first rainy season in South China(FRSSC),the Meiyu over the mid-lower reaches of the Yangtze River (MYYR) and the autumn rainfall in West China(ARWC).Most of Hu'nan apart from west and northwest Hu'nan indicate a high correlation between the SPR and the contemporaneous rainfall in Hu'nan (CRHN).Central and southern Hu'nan is the area where the rainfall during the FRSSC is highly related to CRHN.Central and northern Hu'nan is the area where the precipitation during the MYYR closely connects with CRHN.However,northwest and north of Hu'nan are the are-as where the rainfall during the ARWC intensively relates with CRHN.The rainfall amounts in the different rain stages have very good consistencies with those over high correlation areas in Hu'nan during the corresponding peri-ods,more specifically,the best correlation for the SPR,followed in turn by the FRSSC and the ARWC.The first four spatial modes which are able to well represent the main spatial distribution characteristics of precipitation in the different rain stages are respectively the regional consistent variation tendency,the anti-phase variation tenden-cies between the north and the south region,the south region of the Yangtze River and other regions,as well as the east and the west region.

The spring persistent rainsThe first rainy season in South ChinaMeiyuThe autumn rainfall in West ChinaCorrelation analysisEOF (Empirical orthogonal function)

廖玉芳、张剑明

展开 >

湖南省气候中心,湖南 长沙410118

江南春雨 华南前汛期 梅雨 华西秋雨 相关分析 EOF

湖南省气象局重点课题湖南省气象局气象预报业务能力建设专项湖南省气象局气象预报业务能力建设专项湖南省气象局气象预报业务能力建设专项湖南省地方标准项目

XQKJ16A004YBNL16-10YBNL16-09YBNL16-07201500676

2018

10.3969/j.issn.1673-503X.2018.01.009

气象与环境学报
中国气象局沈阳大气环境研究所

气象与环境学报

CSTPCD
影响因子：1.433
ISSN：1673-503X
年,卷(期)：2018.34(1)
  • 2
  • 14