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A teleconnection pattern of upper-tropospheric circulation anomalies over the Eurasian continent associated with the interannual variability of atmospheric convection over the tropical western North Pacific in July

Peishan Chen Riyu Lu

大气和海洋科学快报(英文版)2024,Vol.17Issue(3):20-24,5.
大气和海洋科学快报(英文版)2024,Vol.17Issue(3):20-24,5.DOI:10.1016/j.aosl.2023.100451

A teleconnection pattern of upper-tropospheric circulation anomalies over the Eurasian continent associated with the interannual variability of atmospheric convection over the tropical western North Pacific in July

A teleconnection pattern of upper-tropospheric circulation anomalies over the Eurasian continent associated with the interannual variability of atmospheric convection over the tropical western North Pacific in July

Peishan Chen 1Riyu Lu1

作者信息

  • 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing China
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摘要

Abstract

热带西北太平洋大气对流的年际变化对东亚夏季气候有着显著影响,而且受到前冬ENSO的影响.然而,还有相当多的西北太平洋对流年际变化不能由前冬ENSO解释.本文表明,7月西北太平洋对流受到欧亚大陆对流层上层遥相关型的显著影响,且这一影响与前冬ENSO的影响程度相当.该遥相关型表现为位于欧洲的气旋式环流异常,中亚的反气旋式环流异常和东亚带状延伸的气旋式环流异常,并表现为7月对流层上层环流的第一主模态.基于本文的结果并结合前人的研究,作者认为这一遥相关型能通过亚洲急流出口区附近的罗斯贝波破碎引起西北太平洋对流异常.

关键词

遥相关/大气对流/西北太平洋/年际变化

Key words

Teleconnection/Atmospheric convection/Western north pacific/Interannual variability

引用本文复制引用

Peishan Chen,Riyu Lu..A teleconnection pattern of upper-tropospheric circulation anomalies over the Eurasian continent associated with the interannual variability of atmospheric convection over the tropical western North Pacific in July[J].大气和海洋科学快报(英文版),2024,17(3):20-24,5.

基金项目

The authors greatly appreciate the comments and suggestions of the two anonymous reviewers,which helped considerably in improving our manuscript.This research was supported by the National Natural Sci-ence Foundation of China[grant number 41721004]. ()

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