EGU2020-13569
https://doi.org/10.5194/egusphere-egu2020-13569
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Gravity wave activity during the southern hemispheric sudden stratospheric warming 2019

Andreas Dörnbrack, Tyler Mixa, Bernd Kaifler, and Markus Rapp
Andreas Dörnbrack et al.
  • DLR Oberpfaffenhofen, Institut für Physik der Atmosphäre, Weßling, Germany (andreas.doernbrack@dlr.de)

At the end of the austral winter 2019, a sudden stratospheric warming led to an early breakdown of the polar vortex. The meteorological conditions during this event are documented and analysed by means of operational analyses of the Intgrated Forecast System (IFS) of the ECMWF and ERA5 data. Especially, we focus on the decline of stratospheric wave activity over the southern tip of South America. For this region, ground-based and airborne measurements are employed to compare selected diagnostics with fields from the ECMWF's numerical weather prediction model IFS. Furthmore, the meteorological conditions for one selected research flight during the SOUTHTRAC campaign are presented. This part serves as background information for a case study presented by Tyler Mixa.

How to cite: Dörnbrack, A., Mixa, T., Kaifler, B., and Rapp, M.: Gravity wave activity during the southern hemispheric sudden stratospheric warming 2019, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-13569, https://doi.org/10.5194/egusphere-egu2020-13569, 2020

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