Position: Home > Articles > Effects of Summer Tropical Convection on Rainfall of Yangtze Valley and Huaihe River Basin
Journal of Anhui Agricultural Sciences
2010,38
(9)
4651-4653
夏季热带对流对江淮流域降水的影响
作 者：
胡姗姗
单 位：
南京大学大气科学学院
关键词：
对流活动;副热带高压;OLR
摘 要：
利用NCEP/NCAR月平均再分析格点资料,包括OLR资料、500hPa位势高度场等资料,借助相关分析、合成分析,研究了夏季热带对流的强弱对西太平洋副热带高压位置、强度变化以及江淮流域降水的影响。夏季从菲律宾周围经南海到中印半岛上空的对流活动增强或减弱时,西太平洋副热带高压位置偏北或偏南,且向北进时,在6月末和7月初存在明显或不明显突跳,从而影响东亚季风雨带在长江、淮河流域的停滞时间,造成长江流域和淮河流域降水偏少或偏多。
译 名：
Effects of Summer Tropical Convection on Rainfall of Yangtze Valley and Huaihe River Basin
作 者：
HU Shan-shan (Atmospheric Science School of Nanjing University,Nanjing,Jiangsu 210093)
关键词：
Tropical convection; Subtropical high; OLR
摘 要：
Based on NCEP/NCAR monthly mean reanalysis data including OLR,500 hPa geopotential height field data,effects of summer tropical convection on location and itensity variation of Western Pacific subtropical high,rainfall between Yangtze valley and Huaihe basin were studied by using correlation analysis,synthesis analysis. In summer,the convective activities are intensified (weakened) from the area around Philippines to Indo-China Peninsula through South Chins Sea,the Western Pacific subtropical high may shift northward (southward),the Western Pacific subtropical high abruptly shifts northward in mid-June and early July during its northward advance (it shifts northward during its northward advance). It caused that summer monsoon rainfall is below (above normal) and drought (flood) may occur in the Yangtze valley and Huaihe basin.
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