DOI: 10.1002/2016GL071676
论文题名: The extraordinarily strong and cold polar vortex in the early northern winter 2015/2016
作者: Matthias V. ; Dörnbrack A. ; Stober G.
刊名: Geophysical Research Letters
ISSN: 0094-8359
EISSN: 1944-8090
出版年: 2016
卷: 43, 期: 23 起始页码: 12287
结束页码: 12294
语种: 英语
英文关键词: planetary waves
; polar vortex
Scopus关键词: Ionosphere
; Troposphere
; Eliassen-Palm flux
; Equatorward shift
; Midlatitudes
; Planetary Waves
; Polar latitude
; Polar vortex
; Satellite observations
; Wind measurement
; Vortex flow
英文摘要: The Arctic polar vortex in the early winter 2015/2016 was the strongest and coldest of the last 68 years. Using global reanalysis data, satellite observations, and mesospheric radar wind measurements over northern Scandinavia we investigate the characteristics of the early stage polar vortex and relate them to previous winters. We found a correlation between the planetary wave (PW) activity and the strength and temperature of the northern polar vortex in the stratosphere and mesosphere. In November/December 2015, a reduced PW generation in the troposphere and a stronger PW filtering in the troposphere and stratosphere, caused by stronger zonal winds in midlatitudes, resulted in a stronger polar vortex. This effect was strengthened by the equatorward shift of PWs due to the strong zonal wind in polar latitudes resulting in a southward shift of the Eliassen-Palm flux divergence and hence inducing a decreased deceleration of the polar vortex by PWs. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006944753&doi=10.1002%2f2016GL071676&partnerID=40&md5=0d40296befd676f040a22c9b578823ab
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9322
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Leibniz Institute of Atmospheric Physics, University of Rostock, Kühlungsborn, Germany
Recommended Citation:
Matthias V.,Dörnbrack A.,Stober G.. The extraordinarily strong and cold polar vortex in the early northern winter 2015/2016[J]. Geophysical Research Letters,2016-01-01,43(23).