华西秋雨特征及成因探讨

SURVEY ON THE CAUSES AND FEATURES OF AUTUMN RAIN IN WESTERN CHINA Xu Guiyu Lin Chunyu

本文利用1951－1986年降水资料，采用EOF方法，分析了华西秋雨（9－10月）降水的时空分布特征，并对造成这一地区秋季异常降水的北半球500hPa环流作了探讨。

In this paper the time-space distribution feature of autumn (Sept. -Oct) rain in western China was analyzed by EOF analy8is method with the pricipitation data in 1951 - 1986.and a survey on the circulation of north hemisphere at 500hPa causing autumn anomaly pricipitation in this area was also made.