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北极涛动指数及其年代际变化研究 被引量:2

The study of north polar oscillation index and its year-to year change
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摘要 运用NCEP/NCAR再分析月资料,根据北极涛动经向振荡的特征构建一个新的AO指数,使其能较好地表现AO的季节变化,并用回归分析和相关分析方法对指数进行检验。同时,用滑动平均方法对北极涛动的年代际变化进行研究,发现北极涛动在70年代中期存在位相突变,由负位相转为正位相,并解释了这种位相突变的气候意义。
出处 《贵州气象》 2003年第3期7-10,共4页 Journal of Guizhou Meteorology
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