Influences of tropical circulation and sea surface temperature anomalies on extreme heat over Northeast Asia in the midsummer of 2018

论文摘要

2018年盛夏东北亚地区遭受了严重的高温热浪袭击。同时,西北太平洋地区出现了研究时段内最强的气旋环流异常,热带海温的异常信号在热带太平洋和北印度洋均很弱,而热带东南印度洋呈现明显的冷异常。针对2018年盛夏的独特现象,本文研究了热带东南印度洋和热带大气环流对东北亚高温的影响。结果表明,热带东南印度洋冷海温激发异常的越赤道气流和局地经圈环流,有利于西北太平洋出现气旋异常。进一步,西北太平洋气旋异常通过局地经圈环流在东北亚地区造成异常下沉和反气旋,从而有利于东北亚高温发生。

论文目录

• 1. Introduction
• 2. Data and methods
• 3. In?uence of the cyclonic anomaly over the WNP
• 4. In?uence of the SSTA over the SETIO
• 5. Conclusions
• Disclosure statement

文章来源

类型: 期刊论文

作者: CHEN Ruidan,WEN Zhiping,LU Riyu

关键词: 高温,东北亚,热带大气环流,热带东南印度洋

来源: Atmospheric and Oceanic Science Letters 2019年04期

年度: 2019

分类: 基础科学

专业: 气象学

单位: Center for Monsoon and Environment Research/Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies/School of Atmospheric Sciences, Sun Yat-sen University,Jiangsu Collaborative Innovation Center for Climate Change,Department of Atmospheric and Oceanic Sciences/Institute of Atmospheric Sciences, Fudan University,State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences,College of Earth and Planetary Sciences,University of the Chinese Academy of Sciences

基金: supported by the National Key R&D Program of China [grant number 2016YFA0600601],the National Natural Science Foundation of China [grant numbers41605027,41530530,and 41721004],the Fundamental Research Funds for the Central Universities

分类号: P423

页码: 238-245

总页数: 8

文件大小: 3308K

下载量: 12