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利用1973~1989年南极海冰北界资料研究海冰变异对华南不同区域后汛期降雨的影响,认为:华南后汛期降雨与南极海冰和南半球大气环流间存在遥相关显著性。分析海冰与南半球大气环流、副高、热带气旋、南亚高压等系统间的相关关系表明,海冰变异是通过影响这些系统,而对后汛期降雨产生影响作用的。其中上年9月罗斯海海冰、7月全南极海冰和威德尔海海冰的作用更明显。当年1月低纬气旋数和前期南美深对流区强弱与广西后汛期降雨关系显著。
Using the data from the northern boundary of the Antarctic sea ice from 1973 to 1989 to study the effects of sea ice variability on the post-flood season rainfall in different regions of South China, the teleconnection between the post-flood season rainfall in South China and the Antarctic sea ice and the atmospheric circulation in the southern hemisphere is significant. The analysis of correlation between sea ice and atmospheric circulation in the southern hemisphere, subtropical high, tropical cyclone and South Asia high pressure shows that the variation of sea ice affects these systems and affects the rainfall in the later flood season. Among them, the Ross Sea sea ice in September last year, July Antarctic sea ice and Weddell Sea ice more obvious. The low latitude cyclone in January of that year and the strength of the early convective region in South America and the rainfall in the late flood season in Guangxi are significant.