厄尼诺及冬季欧亚大陆雪盖与湖南季风雨量年际变化联系的初步研究

A PRELIMINARY STUDY OF THE INTERANNUAL VARIATIONS IN HUNAN SUMMER MONSOON RAINFALL ASSOCIATED WITH THE ELNINO AND WINTER EURASIAN SNOW COVER

摘要:

在本文中,考查了湖南夏季风降水量的年际变化与厄尼诺现象和冬季欧亚大陆雪盖的统计联系,得出如下结论:(1)、当厄尼诺现象发生后,下一年湖南夏季风降水量偏多,其统计显著性水平在1%以上;(2)、湖南夏季风降水量与冬季欧亚大陆雪盖的相关系数为-0.53,达到5%的显著性水平,这个结论与Huhn-Shukla给出冬季欧亚大陆雪盖与印度夏季风降水量的相关系数为-0.54的结果相一致,它表明冬季欧亚雪盖对印度和华中季风降水量有相类似的作用。

Abstract:

In this paper, the relacionship between interannual variation of Hunan summer monsoon rainfall and El Nino as well as winter Eurasion snow cover is examined. The following conclusions have been obtained:1) when an El Nino event occurred , monsoon rainfall over Hunan during the next year of the El Nino events was usually positive anomalies, which is significant at 1 % level.2 )the correlation coefficient computed between the summer monsoon rainfall over Hunan and the winter Eurasion snow cover is equal to-0.53, which is significant at the 5% level. It agrees with the Huhn-Shukla results. It is suggests that the the Eurasion snow cover may exhibit a similar interaction with the monsoon rainfalls of both India and central China-Hunan.