DOI: 10.1002/grl.50373
论文题名: Secondary planetary waves in the middle and upper atmosphere following the stratospheric sudden warming event of January 2012
作者: Chandran A. ; Garcia R.R. ; Collins R.L. ; Chang L.C.
刊名: Geophysical Research Letters
ISSN: 0094-9120
EISSN: 1944-8851
出版年: 2013
卷: 40, 期: 9 起始页码: 1861
结束页码: 1867
语种: 英语
英文关键词: 2012 stratospheric sudden warming
; MLT
; planetary waves
Scopus关键词: Broadband emission radiometry
; Eliassen-Palm flux
; Mesosphere and lower thermosphere
; MLT
; Planetary Waves
; Potential vorticity
; Stratospheric sudden warmings
; Whole atmosphere community climate models
; Ionosphere
; NASA
; Digital storage
; data set
; ionosphere
; mesosphere
; middle atmosphere
; planetary wave
; potential vorticity
; stratosphere
; thermosphere
; upper atmosphere
; warming
英文摘要: The role of planetary waves in causing stratospheric sudden warmings (SSWs) is well understood and quantified. However, recent studies have indicated that secondary planetary waves are excited in the mesosphere and lower thermosphere following SSWs. We use a version of the Whole Atmosphere Community Climate Model constrained by reanalysis data below 50 km to simulate the SSW of January 2012, a minor warming followed by the formation of an elevated stratopause. We document the occurrence of enhanced Eliassen-Palm flux divergence in the mesosphere and lower thermosphere associated with faster, secondary westward-propagating planetary waves of wave number 1 and period <10 days. We confirm the presence of these secondary planetary waves using observations made by the Sounding of the Atmosphere using the Broadband Emission Radiometry instrument onboard NASA's Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics satellite. Key Points2012 SSW is a minor SSW with an elevated stratopauseSSWs lead to wind reversals and reversal of potential vorticity gradientPV gradient reversal leads to instability driven secondary PWs in MLT ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879121086&doi=10.1002%2fgrl.50373&partnerID=40&md5=bf9b5ec2affb6d0396635d70964676f4
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6384
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Geophysical Institute, University of Alaska Fairbanks, Fairbanks AK, United States
Recommended Citation:
Chandran A.,Garcia R.R.,Collins R.L.,et al. Secondary planetary waves in the middle and upper atmosphere following the stratospheric sudden warming event of January 2012[J]. Geophysical Research Letters,2013-01-01,40(9).