青藏高原冷暖与东亚大气环流的统计分析

本文使用高原温度距平指数代表高原温度。分析指出,高原温度的季序列存在着明显的3年、5年周期,7年和11年周期也较明显。高原温度的持续性容易在秋季发生转换,并且比西太平洋副高、超长波振幅的持续性转换得早。分析还指出,青藏高原温度夏季与南亚高压的南北振荡有密切关系,而冬季又与东亚槽和新疆脊的强度有比较密切的关系。并指出,高原热状况对我国旱涝的影响应引起高度的重视。

Qinghai-Xizang Plateau temperature and East Asia general circulation

By analysing of the seasonal series of Qinghai-Xizang Plateau temperature anor-maly index, it is shown that there are two significance periods and two less significance ones,these are three-year and five-year, and seven-year and eleven-year respectively.. The sign changes of Plateau temperature anormaly in autumn is often observed, and earlier than the changes of anormal signs of western Pacific subtropic high and ultra-long-wave amplitude.