Classification of wintertime large-scale tilted ridges over the Eurasian continent and their influences on surface air temperature

被引:0
|
作者
Da-Wei LIN [1 ,2 ]
Cholaw BUEH [1 ]
Zuo-Wei XIE [1 ]
机构
[1] International Center for climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences
[2] College of Earth Science, University of Chinese Academy of Sciences
基金
中国国家自然科学基金;
关键词
大型斜脊系统; 自组织神经网络; 大范围持续性极端低温; 西伯利亚高压;
D O I
暂无
中图分类号
P461 [气候的形成和影响气候的因素];
学科分类号
0706 ; 070601 ;
摘要
本文研究了冬季欧亚大陆大型斜脊系统(LSTR)的类型及其对大范围持续性极端低温事件(EPECE)的影响。结果表明,依据斜脊位置和空间形态,LSTR可分为五类,其中前两类与欧亚大陆EPECE密切相关。第一类LSTR起于乌拉尔山,有利于我国EPECE的发生;第二类LSTR起于科拉半岛,位置偏西,有利于中欧至中西伯利亚一带EPECE的发生。LSTR与西伯利亚高压之间的垂直耦合作用是EPECE发生的重要原因。这些结论对我国EPECE的中期—延伸期预报有一定的指导意义。
引用
收藏
页码:404 / 411
页数:8
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