Articles | Volume 22, issue 5
Atmos. Chem. Phys., 22, 3493–3505, 2022
https://doi.org/10.5194/acp-22-3493-2022
Atmos. Chem. Phys., 22, 3493–3505, 2022
https://doi.org/10.5194/acp-22-3493-2022
Research article
16 Mar 2022
Research article | 16 Mar 2022

Dynamical evolution of a minor sudden stratospheric warming in the Southern Hemisphere in 2019

Guangyu Liu et al.

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Cited articles

Al-Ajmi, D. N., Harwood, R. S., and Miles, T.: A sudden warming in the middle atmosphere of the southern hemisphere, Q. J. Roy. Meteor. Soc., 111, 359–389, 1985. 
Andrews, D. G. and McIntyre, M. E.: Planetary waves in horizontal and vertical shear: The generalized Eliassen-Palm relation and the mean zonal acceleration, J. Atmos. Sci., 33, 2031–2048, 1976. 
Andrews, D. G., Holton, J. R., and Leovy, C. B.: Middle atmosphere dynamics, 1st edn., vol. 40, edited by: Dmowska, R., and Holton, J. R., San Diego, Calif., Academic Press Inc, p. 489, ISBN: 9780120585762, 1987. 
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The sudden stratospheric warming (SSW) event that occurred in September 2019 in the Southern Hemisphere was analyzed. A large warming and decelerated westerly winds were observed in the southern polar region. Since a reversal from westerly to easterly winds did not take place SSW2019 was classified as a minor SSW. The total wave forcing and the contribution from PW1 were larger in 2019. The strong and long-lasting planetary-scale waves with zonal wavenumber 1 played a role in SSW2019.
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