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Cold Vortex over Northeast China and Its Climate Effect
Author(s): 
Pages: 179-191
Year: Issue:  1
Journal: Chinese Journal of Atmospheric Sciences

Abstract: 基于自动识别、追踪方法得到的近50年东北冷涡数据集,本文研究了东北冷涡的年际变率及演变趋势,并分析了其持续性活动对我国气候的影响及相关联的大尺度环流异常特征.结果表明,东北冷涡具有很明显的年际变率,且存在2.5年左右的主振荡周期,但没有显著的长期变化趋势.东北局地在持续性冷涡控制下,四季气温均明显偏低,并在春季和夏季能造成局部降水偏多.在东北冷涡活跃的夏季,长江流域往往降水显著偏多;而在冬季东北冷...
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