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"Vertical structure of the Arctic spring transition in the middle atmosphere"

Matthias, Vivien and Stober, Gunter and Kozlovsky, Alexander and Lester, Mark and Belova, Evgenia and Kero, Johan (2021) "Vertical structure of the Arctic spring transition in the middle atmosphere". JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, pp. 1-21. Wiley. doi: 10.1029/2020JD034353. ISSN 2169-897X.

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JD034353

Abstract

In the middle atmosphere, spring transition is the time period where the zonal circulation reverses from winter westerly to summer easterly which has a strong impact on the vertical wave propagation influencing the ionospheric variability. The spring transition can be rapid in form of a final sudden stratospheric warming (SSW, mainly dynamically driven) or slow (mainly radiatively driven) but also intermediate stages can occur. In most studies spring transitions are classified either by their timing of occurrence or by their vertical structure. However, all these studies focus exclusively on the stratosphere and it is not clear if and how pre-winter conditions have an impact on when and how spring transitions take place. Here we classify the spring transitions regarding their vertical-temporal development beginning in January and spanning the whole middle atmosphere in the core region of the polar vortex. This leads to five classes where the timing of the SSW in the preceding winter and a downward propagating Northern Annular Mode (NAM) plays a crucial role. First, we use MLS satellite data to describe the five classes for recent single years, and then we use MERRA-2 reanalysis data for a composite analysis. The results show distinctive differences between the five classes in the months before the spring transition especially in the mesosphere. We hypothesize that this will help to improve the prediction of the spring transition. Additionally, meteor radar winds are used to link spring transition effects in the upper mesosphere and lower thermosphere with the stratospheric final warming.

Item URL in elib:https://elib.dlr.de/142277/
Document Type:Article
Title:"Vertical structure of the Arctic spring transition in the middle atmosphere"
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Matthias, VivienVivien.Matthias (at) dlr.dehttps://orcid.org/0000-0003-1806-4507
Stober, Guntergunter.stober (at) iap.unibe.chhttps://orcid.org/0000-0002-7909-6345
Kozlovsky, AlexanderSodankylä Geophysical Observatory, Finlandhttps://orcid.org/0000-0003-1468-7600
Lester, MarkUniversity Leicester, United Kingdomhttps://orcid.org/0000-0001-7353-5549
Belova, EvgeniaSwedish Institute of Space Physics (IRF), Kiruna, Swedenhttps://orcid.org/0000-0002-6698-321X
Kero, JohanSwedish Institute of Space Physics (IRF), Kiruna, Swedenhttps://orcid.org/0000-0002-2177-6751
Date:19 April 2021
Journal or Publication Title:JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
DOI :10.1029/2020JD034353
Page Range:pp. 1-21
Editors:
EditorsEmailEditor's ORCID iD
Manney, G.L.NorthWest Research Associates and New Mexico Institute of Mining and TechnologyUNSPECIFIED
Butler, A.NOAA Chemical Sciences Laboratory, Boulder, USAUNSPECIFIED
Wargan, KrzysztofScience Systems and Applications, Inc. and NASA/GSFCUNSPECIFIED
Grooss, Jens-UweForschungszentrum Jülich, GermanyUNSPECIFIED
Publisher:Wiley
Series Name:The Exceptional Arctic Stratospheric Polar Vortex in 2019/2020: Causes and Consequences
ISSN:2169-897X
Status:Published
Keywords:Spring transition, new classification,
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Middle Atmosphere
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Solar-Terrestrial Coupling Processes
Deposited By: Matthias, Vivien
Deposited On:26 May 2021 12:59
Last Modified:26 May 2021 12:59

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