Skip to Main content Skip to Navigation
Journal articles

Antarctic ozone enhancement during the 2019 sudden stratospheric warming event

Sarah Safieddine 1 Marie Bouillon 1 Ana‐claudia Paracho 1 Julien Jumelet 2 Florent Tence 2 Andrea Pazmino 2 Florence Goutail 2 Catherine Wespes 3 Slimane Bekki 2 Anne Boynard 1 Juliette Hadji‐lazaro 1 Pierre‐françois Coheur 3 Daniel Hurtmans 3 Cathy Clerbaux 1, 3
1 TROPO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
2 STRATO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
3 SQUARES - Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing
Abstract : We analyze the 2019 sudden stratospheric warming event that occurred in the Southern Hemisphere through its impact on the Antarctic ozone. Using temperature, ozone, and nitric acid data from the Infrared Atmospheric Sounding Interferometer (IASI), our results show that the average increase in stratospheric temperature reached a maximum of 34.4° on September 20th in the [60‐90]°S latitude range when compared to the past three years. Dynamical parameters suggest a locally‐reversed and weakened zonal winds and a shift in the location of the polar jet vortex. This led to air masses mixing, to a reduced polar stratospheric clouds formation detected at a ground station, and as such to lower ozone and nitric acid depletion. 2019 total ozone columns for the months of September, October, and November, were on average higher by 29%, 28%, and 26% respectively when compared to the 11‐year average of the same months.
Document type :
Journal articles
Complete list of metadatas
https://hal-insu.archives-ouvertes.fr/insu-02881549
Contributor : Catherine Cardon <>
Submitted on : Thursday, June 25, 2020 - 6:53:42 PM
Last modification on : Saturday, June 27, 2020 - 3:11:47 AM

Identifiers

Collections

INSU | LATMOS | UVSQ | SORBONNE-UNIVERSITE | UNIV-PARIS-SACLAY | CNRS | SU-SCIENCES

Citation

Sarah Safieddine, Marie Bouillon, Ana‐claudia Paracho, Julien Jumelet, Florent Tence, et al.. Antarctic ozone enhancement during the 2019 sudden stratospheric warming event. Geophysical Research Letters, American Geophysical Union, 2020, e2020GL087810 (in press). ⟨10.1029/2020GL087810⟩. ⟨insu-02881549⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

12

Contact

Informations

CCSD