北半球500百帕极地环流与西北太平洋台风活动的遥相关
TELECONNECTIONS OF 500 hPa NORTHERN POLAR CIRCULATION WITH TYPHOONS IN NORTHWESTERN PACIFIC
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摘要: 本文对1951—1984年各月500hPa极地高度场资料进行自然正交展开,分析展开的时间系数与西北太平洋台风活动的大尺度遥相关关系。结果表明,春、夏季极地高度场自然正交展开的第一时间系数和1月份第二时间系数与西北太平洋台风活动均有很好的相关。Abstract: Using monthly data from 1951 through 1984, polar geopotential heights at 500 hPa north of 65°N are expanded through EOF to study large scale teleconnections between the expanded temp ral coefficients and the behaviour of typhoons in the northwestern Pacific. It shows that the temporal weighted coefficient for the EOF polar geopotential heights in northern spring and sum mer and the second one for January are well correlated with the northwestern Pacific typhoom
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