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Mesospheric signatures observed during 2010 minor stratospheric warming at King Sejong Station (62°S, 59°W)

Cited 19 time in wos
Cited 19 time in scopus
Title
Mesospheric signatures observed during 2010 minor stratospheric warming at King Sejong Station (62°S, 59°W)
Other Titles
세종기지에서의 2010 minor SSW 기간동안 중간권의 반응
Authors
S. Eswaraiah
Dennis Riggin
S.V.B. Rao
A. Chandran
M. Venkat Ratnam
Kim, Jeong-Han
Junseok Hong
Yong Ha Kim
Keywords
CouplingMLSMesosphereMesospheric RadarsMesospheric coolingSD-WACCMSudden Stratospheric Warming
Issue Date
2016
Citation
S. Eswaraiah, et al. 2016. "Mesospheric signatures observed during 2010 minor stratospheric warming at King Sejong Station (62°S, 59°W)". JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 140(1): 55-64.
Abstract
A minor stratospheric sudden warming (SSW) event was noticed in the southern hemisphere (SH) during September (day259) 2010 along with two episodic warmings in early August (day212) and late October (day 300) 2010. Among the three warming events, the signature of mesosphere response was detected only for the September event in the mesospheric wind dataset from both meteor radar and MF radar located at King Sejong Station (62°S, 59°W) and Rothera (68°S, 68°W), Antarctica, respectively. The zonal winds in the mesosphere reversed approximately a week before the September SSW event, as has been observed in the 2002 major SSW. Signatures of mesospheric cooling (MC) in association with strato- spheric warmings are found in temperatures measured by the Microwave Limb Sounder (MLS). Simu- lations of specified dynamics version of Whole Atmosphere Community Climate Model (SD-WACCM) are able to reproduce these observed features. The mesospheric wind field was found to differ significantly from that of normal years probably due to enhanced planetary wave (PW) activity before the SSW. From the wavelet analysis of wind data of both stations, we find that strong 14?16day PWs prevailed prior to the SSW and disappeared suddenly after the SSW in the mesosphere. Our study provides evidence that minor SSWs in SH can result insignificant effects on the mesospheric dynamics as in the northern hemisphere.
URI
https://repository.kopri.re.kr/handle/201206/7435
DOI
http://dx.doi.org/10.1016/j.jastp.2016.02.007
Type
Article
Indexed
SCI
Appears in Collections  
2015-2016, Study of the Upper and Lower Atmosphere Coupling Through 4-Dimensional Observations for The Northern Polar Atmosphere: Polar Upper Atmospheric and Space Environmental Changes (15-16) / Jee; Geonhwa (PE15090; PE16090)
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