Matthias, Vivien and Dörnbrack, Andreas and Stober, Gunter (2016) The extraordinarily strong and cold polar vortex in the early northern winter 2015/16. Geophysical Research Letters, 43 (23), pp. 12287-12294. Wiley. DOI: 10.1002/2016GL071676 ISSN 0094-8276
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Official URL: http://dx.doi.org/10.1002/2016GL071676
Abstract
The Arctic polar vortex in the early winter 2015/16 was the strongest and coldest o f the la st 68 years. Using global reanalysis data, satellite observations, and mesospheric radar wind measurements over northern Scandinavia we investigate the characteristics of the early sta g e 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 vor- tex in the stratosphere and mesosphere. In Nov/D ec 2015, a reduced PW generation in the troposphere and a stronger PW filtering in the troposphere and stratosphere, caused by stronger zonal winds in mid-latitudes, resulted in a stronger polar vortex. Thi s effect was strengthened by the equator ward 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 inducinga decreased deceleration of th e polar vortex by PWs.
Item URL in elib: | https://elib.dlr.de/108690/ | ||||||||||||
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Document Type: | Article | ||||||||||||
Title: | The extraordinarily strong and cold polar vortex in the early northern winter 2015/16 | ||||||||||||
Authors: |
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Date: | December 2016 | ||||||||||||
Journal or Publication Title: | Geophysical Research Letters | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | Yes | ||||||||||||
In ISI Web of Science: | Yes | ||||||||||||
Volume: | 43 | ||||||||||||
DOI : | 10.1002/2016GL071676 | ||||||||||||
Page Range: | pp. 12287-12294 | ||||||||||||
Publisher: | Wiley | ||||||||||||
ISSN: | 0094-8276 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | coldest and strongest Arctic polar vortex , stratospheric planetary wave activity | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Aeronautics | ||||||||||||
HGF - Program Themes: | air traffic management and operations | ||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||
DLR - Program: | L AO - Air Traffic Management and Operation | ||||||||||||
DLR - Research theme (Project): | L - Climate, Weather and Environment | ||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Transport Meteorology | ||||||||||||
Deposited By: | Ziegele, Brigitte | ||||||||||||
Deposited On: | 01 Dec 2016 13:58 | ||||||||||||
Last Modified: | 26 May 2020 12:29 |
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