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Responses of Quasi 2 Day Waves in the MLT Region to the 2013 SSW Revealed by a Meteor Radar Chain
Author(s) -
Ma Zheng,
Gong Yun,
Zhang Shaodong,
Zhou Qihou,
Huang Chunming,
Huang Kaiming,
Yu You,
Li Guozhu,
Ning Baiqi,
Li Chun
Publication year - 2017
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2017gl074597
Subject(s) - thermosphere , stratosphere , middle latitudes , atmospheric sciences , northern hemisphere , mesosphere , meteor (satellite) , geology , southern hemisphere , latitude , climatology , ionosphere , meteorology , geodesy , physics , geophysics
We present an analysis of the responses of quasi 2 day waves (QTDWs) to the 2013 sudden stratosphere warming (SSW) in the mesosphere and lower thermosphere (MLT) region. The study is based on data collected by a meteor radar chain along the 120°E meridian in the Northern Hemisphere which consists of four stations at Mohe (52.5°N, 122.3°E), Beijing (40.3°N, 116.2°E), Wuhan (30.5°N, 114.6°E), and Sanya (18.3°N, 109.6°E). It is the first time that an enhancement of the QTDW in the neutral wind during the 2013 SSW is observed in the midlatitudes in the Northern Hemisphere. During the SSW, the amplification of the QTDW in the low latitudes is the most prominent and the direction of the mean zonal wind shows clear reversion from eastward to westward. The consistent variations of the QTDWs and the mean neutral wind at the four stations are very likely associated with the SSW.