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Introduction to Special Collection ``The Exceptional Arctic Stratospheric Polar Vortex in 2019/2020: Causes and Consequences" This paper introduces the special collection in Geophysical Research Letters and Journal of Geophysical Research: Atmospheres on the exceptional stratospheric polar vortex in 2019/2020. Papers in this collection show that the 2019/2020 stratospheric polar vortex was the strongest, most persistent, and coldest on record in the Arctic. The unprecedented Arctic chemical processing and ozone loss in spring 2020 have been studied using numerous satellite and ground-based data sets and chemistry-transport models. Quantitative estimates of chemical loss are broadly consistent among the studies and show profile loss of about the same magnitude as in the Arctic in 2011, but with most loss at lower altitudes; column loss was comparable to or larger than that in 2011. Several papers show evidence of dynamical coupling from the mesosphere down to the surface. Studies of tropospheric influence and impacts link the exceptionally strong vortex to reflection of upward propagating waves and show coupling to tropospheric anomalies, including extreme heat, precipitation, windstorms, and marine cold air outbreaks. Predictability of the exceptional stratospheric polar vortex in 2019/2020 and related predictability of surface conditions are explored. The exceptionally strong stratospheric polar vortex in 2019/2020 highlights the extreme interannual variability in the Arctic winter/spring stratosphere and the far-reaching consequences of such extremes.
Document ID
20220010023
Acquisition Source
Goddard Space Flight Center
Document Type
Accepted Manuscript (Version with final changes)
Authors
Gloria L. Manney ORCID
(Northwest Research Associates Redmond, Washington, United States)
Amy H. Butler ORCID
(National Oceanic and Atmospheric Administration Washington D.C., District of Columbia, United States)
Krzysztof Wargan ORCID
(Science Systems and Applications (United States) Lanham, Maryland, United States)
Jens-Uwe Grooß ORCID
(Forschungszentrum Jülich Jülich, Germany)
Date Acquired
June 29, 2022
Publication Date
September 12, 2022
Publication Information
Publication: Journal of Geophysical Research: Atmospheres
Publisher: American Geophysical Union / Wiley
Volume: 127
Issue: 18
Issue Publication Date: September 27, 2022
ISSN: 2169-897X
e-ISSN: 2169-8996
Subject Category
Geophysics
Funding Number(s)
CONTRACT_GRANT: NNG17HP01C
CONTRACT_GRANT: JPL subcontract #1521127
CONTRACT_GRANT: NSF Climate and Large 424 Scale Dynamics #2015906
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
Technical Review
Professional Review
Keywords
Artic
Stratospheric
Polar Vortex
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