Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection
The impacts of Stratospheric Aerosol Injection (SAI) on the atmosphere and surface climate depend on when and where the sulfate aerosol precursors are injected, as well as on how much surface cooling is to be achieved. We use a set of CESM2(WACCM6) SAI simulations achieving three different levels of...
Published in: | Geophysical Research Letters |
---|---|
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2023GL104726 |
id |
ftncar:oai:drupal-site.org:articles_26781 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_26781 2024-04-14T08:03:37+00:00 Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection Bednarz, Ewa M. (author) Visioni, Daniele (author) Butler, Amy H. (author) Kravitz, Ben (author) MacMartin, Douglas G. (author) Tilmes, Simone (author) 2023-11-28 https://doi.org/10.1029/2023GL104726 en eng Geophysical Research Letters--Geophysical Research Letters--0094-8276--1944-8007 Data from: 'Potential non-linearities in the high latitude circulation and ozone response to Stratospheric Aerosol Injection'--10.5281/zenodo.7976364 articles:26781 doi:10.1029/2023GL104726 ark:/85065/d7697446 Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. article Text 2023 ftncar https://doi.org/10.1029/2023GL104726 2024-03-21T18:00:26Z The impacts of Stratospheric Aerosol Injection (SAI) on the atmosphere and surface climate depend on when and where the sulfate aerosol precursors are injected, as well as on how much surface cooling is to be achieved. We use a set of CESM2(WACCM6) SAI simulations achieving three different levels of global mean surface cooling and demonstrate that unlike some direct surface climate impacts driven by the reflection of solar radiation by sulfate aerosols, the SAI-induced changes in the high latitude circulation and ozone are more complex and could be non-linear. This manifests in our simulations by disproportionally larger Antarctic springtime ozone loss, significantly larger intra-ensemble spread of the Arctic stratospheric jet and ozone responses, and non-linear impacts on the extratropical modes of surface climate variability under the strongest-cooling SAI scenario compared to the weakest one. These potential non-linearities may add to uncertainties in projections of regional surface impacts under SAI. Article in Journal/Newspaper Antarc* Antarctic Arctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Arctic Geophysical Research Letters 50 22 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The impacts of Stratospheric Aerosol Injection (SAI) on the atmosphere and surface climate depend on when and where the sulfate aerosol precursors are injected, as well as on how much surface cooling is to be achieved. We use a set of CESM2(WACCM6) SAI simulations achieving three different levels of global mean surface cooling and demonstrate that unlike some direct surface climate impacts driven by the reflection of solar radiation by sulfate aerosols, the SAI-induced changes in the high latitude circulation and ozone are more complex and could be non-linear. This manifests in our simulations by disproportionally larger Antarctic springtime ozone loss, significantly larger intra-ensemble spread of the Arctic stratospheric jet and ozone responses, and non-linear impacts on the extratropical modes of surface climate variability under the strongest-cooling SAI scenario compared to the weakest one. These potential non-linearities may add to uncertainties in projections of regional surface impacts under SAI. |
author2 |
Bednarz, Ewa M. (author) Visioni, Daniele (author) Butler, Amy H. (author) Kravitz, Ben (author) MacMartin, Douglas G. (author) Tilmes, Simone (author) |
format |
Article in Journal/Newspaper |
title |
Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection |
spellingShingle |
Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection |
title_short |
Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection |
title_full |
Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection |
title_fullStr |
Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection |
title_full_unstemmed |
Potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection |
title_sort |
potential non-linearities in the high latitude circulation and ozone response to stratospheric aerosol injection |
publishDate |
2023 |
url |
https://doi.org/10.1029/2023GL104726 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_relation |
Geophysical Research Letters--Geophysical Research Letters--0094-8276--1944-8007 Data from: 'Potential non-linearities in the high latitude circulation and ozone response to Stratospheric Aerosol Injection'--10.5281/zenodo.7976364 articles:26781 doi:10.1029/2023GL104726 ark:/85065/d7697446 |
op_rights |
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
op_doi |
https://doi.org/10.1029/2023GL104726 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
22 |
_version_ |
1796299898992197632 |