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  September 2019 Antarctic sudden stratospheric warming: quasi-6-day wave burst and ionospheric effects

Yamazaki, Y., Matthias, V., Miyoshi, Y., Stolle, C., Siddiqui, T., Kervalishvili, G., Lastovicka, J., Kozubek, M., Ward, W., Themens, D. R., Kristoffersen, S., Alken, P. (2020): September 2019 Antarctic sudden stratospheric warming: quasi-6-day wave burst and ionospheric effects. - Geophysical Research Letters, 47, 1, e2019GL086577.
https://doi.org/10.1029/2019GL086577

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 Creators:
Yamazaki, Y.1, Author
Matthias, Vivien2, Author              
Miyoshi, Y.1, Author
Stolle, C.1, Author
Siddiqui, T.1, Author
Kervalishvili, G.1, Author
Lastovicka, J.1, Author
Kozubek, M.1, Author
Ward, W.1, Author
Themens, D. R.1, Author
Kristoffersen, S.1, Author
Alken, P.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: An exceptionally strong stationary planetary wave with Zonal Wavenumber 1 led to a sudden stratospheric warming (SSW) in the Southern Hemisphere in September 2019. Ionospheric data from European Space Agency's Swarm satellite constellation mission show prominent 6‐day variations in the dayside low‐latitude region at this time, which can be attributed to forcing from the middle atmosphere by the Rossby normal mode “quasi‐6‐day wave” (Q6DW). Geopotential height measurements by the Microwave Limb Sounder aboard National Aeronautics and Space Administration's Aura satellite reveal a burst of global Q6DW activity in the mesosphere and lower thermosphere during the SSW, which is one of the strongest in the record. The Q6DW is apparently generated in the polar stratosphere at 30–40 km, where the atmosphere is unstable due to strong vertical wind shear connected with planetary wave breaking. These results suggest that an Antarctic SSW can lead to ionospheric variability through wave forcing from the middle atmosphere.

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 Dates: 2020
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1029/2019GL086577
PIKDOMAIN: RD1 - Earth System Analysis
eDoc: 8775
Research topic keyword: Atmosphere
Model / method: Nonlinear Data Analysis
Regional keyword: Global
Organisational keyword: RD1 - Earth System Analysis
Working Group: Earth System Modes of Operation
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Title: Geophysical Research Letters
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 47 (1) Sequence Number: e2019GL086577 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals182
Publisher: American Geophysical Union (AGU)
Publisher: Wiley