Regional characteristics of climatic variability of dust storm frequency in northern china 我国北方区域沙尘天气的时间特征分析
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The average values of the transition dates in middle stratosphere and their variations with height . the climatic variability and the interannual and interdecadal variation rule of the transition dates 中平流层环流转型日期的多年平均值及其随高度的变化,各层转型日期的气候变率及异常存在年代际、年际变化规律。