Antarctic Vortex Dehydration in 2023 as a Substantial Removal Pathway for Hunga Tonga‐Hunga Ha'apai Water Vapor-Reference-Cited by-同舟云学术

Antarctic Vortex Dehydration in 2023 as a Substantial Removal Pathway for Hunga Tonga‐Hunga Ha'apai Water Vapor

Published:2024-04-20 Issue:8 Volume:51 Page:
ISSN:0094-8276
Container-title:Geophysical Research Letters
language:en
Short-container-title:Geophysical Research Letters

Author:

Zhou Xin¹²^ORCID,Dhomse Sandip S.²³^ORCID,Feng Wuhu²⁴^ORCID,Mann Graham²^ORCID,Heddell Saffron²^ORCID,Pumphrey Hugh⁵,Kerridge Brian J.⁶,Latter Barry⁶^ORCID,Siddans Richard⁶,Ventress Lucy⁶,Querel Richard⁷^ORCID,Smale Penny⁷^ORCID,Asher Elizabeth⁸⁹,Hall Emrys G.⁹^ORCID,Bekki Slimane¹⁰,Chipperfield Martyn P.²³^ORCID

Affiliation:

1. School of Atmospheric Sciences Chengdu University of Information Technology Chengdu China

2. School of Earth and Environment University of Leeds Leeds UK

3. National Centre for Earth Observation, University of Leeds Leeds UK

4. National Centre for Atmospheric Science, University of Leeds Leeds UK

5. School of GeoSciences The University of Edinburgh Edinburgh UK

6. NCEO, STFC Rutherford Appleton Laboratory Oxon UK

7. National Institute of Water and Atmospheric Research (NIWA) Lauder New Zealand

8. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder CO USA

9. NOAA Global Monitoring Laboratory Boulder CO USA

10. LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS Paris France

Abstract

AbstractThe January 2022 eruption of Hunga Tonga‐Hunga Ha'apai (HTHH) injected a huge amount (∼150 Tg) of water vapor (H2O) into the stratosphere, along with small amount of SO2. An off‐line 3‐D chemical transport model (CTM) successfully reproduces the spread of the injected H2O through October 2023 as observed by the Microwave Limb Sounder. Dehydration in the 2023 Antarctic polar vortex caused the first substantial (∼20 Tg) removal of HTHH H2O from the stratosphere. The CTM indicates that this process will dominate removal of HTHH H2O for the coming years, giving an overall e‐folding timescale of 4 years; around 25 Tg of the injected H2O is predicted to still remain in the stratosphere by 2030. Following relatively low Antarctic column ozone in midwinter 2023 due to transport effects, additional springtime depletion due to H2O‐related chemistry was small and maximized at the vortex edge (10 DU in column).

Publisher

American Geophysical Union (AGU)

Link

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2023GL107630

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