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Temperature tele­connections between the tropical and polar middle atmosphere in the Southern Hemisphere during the 2010 minor sudden stratospheric warming

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Title
Temperature tele­connections between the tropical and polar middle atmosphere in the Southern Hemisphere during the 2010 minor sudden stratospheric warming
Other Titles
2010년 성층권 돌연승온 기간중 남반구 고위도-열대지역 고층대기 온도간 원거리 연계
Authors
Eswaraiah, Sunkara
Lee, Changsup
Lee, Wonseok
Kim, Yong Ha
Kumar, Kondapalli Niranjan
Medineni, Venkat Ratnam
Subject
Geochemistry & Geophysics; Meteorology & Atmospheric Sciences
Keywords
GAIA simulations; MLS; polar middle atmosphere dynamics; stratosphere-mesosphere temperature; sudden stratospheric warming; tele-connection; tropical middle atmosphere
Issue Date
2021-01
Citation
Eswaraiah, Sunkara, et al. 2021. "Temperature tele­connections between the tropical and polar middle atmosphere in the Southern Hemisphere during the 2010 minor sudden stratospheric warming". ATMOSPHERIC SCIENCE LETTERS, 22(1): 1-9.
Abstract
Southern Hemispheric (SH) sudden stratospheric warmings (SSWs) are rela-tively rare compared to their Northern Hemisphere counterparts. No study hasso far investigated the impacts of the SH minor SSWs on the tropical atmo-sphere and connection between the tropical and polar atmospheres. Here, weanalyze the MERRA-2 and ERA-interim datasets, and Microwave LimbSounder satellite temperature measurements to investigate the tropical andpolar atmosphere tele-connections during the SH minor SSW that occurred in2010. Our analysis shows the strong anti-correlation between the polar andtropical temperatures during the 2010 minor SSW in the stratosphere andmesosphere. This is the first observational study over the SH that reveals thetele-connection between the tropical and polar middle atmospheres throughthe temperature during a minor SSW. We verified this tele-connection, usingsimulations of the Ground-to-topside model of Atmosphere and Ionosphere forAeronomy (GAIA) model during the 2010 minor SSW. GAIA model simula-tions show the temperature anti-correlation between the tropical and polarmiddle atmosphere and zonal wind variations. The feature of meridional circu-lation changes was also observed during the SSW period. Hence, the presentstudy strongly suggests that even minor SSW in the SH can affect the meridio-nal circulation in the middle atmosphere via planetary wave activity.
URI
https://repository.kopri.re.kr/handle/201206/11847
DOI
http://dx.doi.org/doi.org/10.1002/asl.1010
Appears in Collections  
2020-2020, Occurrence of aurora and their correlations with polar upper atmospheric and climate variabilities (20-20) / Jee, Geonhwa (PE20100)
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