张丽君,黄菲,陈峥,王宏

• 1:中国海洋大学海洋与大气学院
• 2:中国海洋大学物理海洋教育部重点实验室和海洋高等研究院
• 3:青岛海洋科学与技术试点国家实验室

摘要(Abstract)：

发生在春季的寒潮冷空气过程(倒春寒)往往会带来更强的气象灾害，因此对倒春寒活动规律的研究和预测有重要意义。本文对1961—2015年中国倒春寒的发生频次进行统计，发现倒春寒不仅发生在中国的北方地区，江南地区和西南地区东部也是倒春寒的高发区。中国倒春寒频次的时空变化存在两个主模态：第一模态为全国型，体现了气候平均的倒春寒频次的空间分布特征，主要以年际振荡为主，多发生在传统的东部型厄尔尼诺(El Ni1o)衰减年的春季；第二模态为南北反相型，反映了江南和东北地区倒春寒频次的反位相变化，主要体现了南方型倒春寒频发的特征，具有显著的年际和年代际振荡特征，与北太平洋“马蹄”型海表温度异常相关，同时赤道太平洋的海温异常多表现为中部型El Ni1o的海温分布特征。

关键词(KeyWords)： 中国倒春寒;经验正交函数分解(EOF);东部型El Ni1o;中部型El Ni1o;北太平洋“马蹄”型海温

Abstract:

Keywords:

基金项目(Foundation): 山东省自然科学基金重大基础研究项目(ZR2019ZD12);; 国家自然科学基金项目(42075024,42006017,41906194)资助~~

作者(Author): 张丽君,黄菲,陈峥,王宏

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