摘要
本文使用1961—1988年的资料,分析了7—8月100hPa南亚高压东伸指数和脊线指数在不同配置下我国夏季降水分布的特征;着重分析了可能影响南亚高压东伸指数和脊线指数异常的因子及其对厄尔尼诺事件的响应。通过对南亚高压东伸指数和脊线指数的预报确定7—8月南亚高压的特征型,从而进一步估计我国盛夏降水的分布。
In this paper, first, the relationships between the positions of 100 hPa South Asia High (SAH) and mid-Summer rainfall in China during the period of 1961-1988 were analysed. According to the indexes of both eastward extending and zonal ridge line for the SAH showing their movements in W-E and N-S directions, there are three patterns of SAH which correspond different precipitation distributions in China in mid-Summer.
Then, some antecedent factors which have an important influence on the movements of SAH in W-E and N-S directions in Summer were chosen.
Final, an effort forecasting mid-Summer precipitation in China from the above factors was made as well.
出处
《高原气象》
CSCD
北大核心
1990年第4期432-438,共7页
Plateau Meteorology
关键词
南亚高压
降水
相关分析
厄尔尼诺
Correlation analysis
100 hPa South Asia High
Mid-Summer precip-itation in China
El Nino event
