Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection
Given the possibility of irreversible, anthropogenic changes in the climate system, technologies such as solar radiation management (SRM) are sometimes framed as possible emergency interventions. However, little knowledge exists on the efficacy of such deployments. To fill in this gap, we perform Co...
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2024
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Online Access: | http://dx.doi.org/10.22541/essoar.169447423.32818318/v2 |
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crwinnower:10.22541/essoar.169447423.32818318/v2 2024-06-02T08:11:21+00:00 Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection Pflüger, Daniel Wieners, Claudia Elisabeth Kampenhout, Leo van Wijngaard, René Dijkstra, Henk A. 2024 http://dx.doi.org/10.22541/essoar.169447423.32818318/v2 unknown Authorea, Inc. posted-content 2024 crwinnower https://doi.org/10.22541/essoar.169447423.32818318/v2 2024-05-07T14:19:22Z Given the possibility of irreversible, anthropogenic changes in the climate system, technologies such as solar radiation management (SRM) are sometimes framed as possible emergency interventions. However, little knowledge exists on the efficacy of such deployments. To fill in this gap, we perform Community Earth System Model 2 (CESM 2) simulations of an intense warming scenario on which we impose gradual early-century SRM or rapid late-century cooling (an emergency intervention), both realised via stratospheric aerosol injection (SAI). While both scenarios cool Earth’s surface, ocean responses differ drastically. Rapid cooling fails to release deep ocean heat content or restore an ailing North Atlantic deep convection but partially stabilizes the Atlantic meridional overturning circulation. In contrast, the early intervention effectively mitigates changes in all of these features. Our results suggest that slow ocean timescales impair the efficacy of some SAI emergency interventions. Other/Unknown Material North Atlantic The Winnower |
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The Winnower |
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crwinnower |
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description |
Given the possibility of irreversible, anthropogenic changes in the climate system, technologies such as solar radiation management (SRM) are sometimes framed as possible emergency interventions. However, little knowledge exists on the efficacy of such deployments. To fill in this gap, we perform Community Earth System Model 2 (CESM 2) simulations of an intense warming scenario on which we impose gradual early-century SRM or rapid late-century cooling (an emergency intervention), both realised via stratospheric aerosol injection (SAI). While both scenarios cool Earth’s surface, ocean responses differ drastically. Rapid cooling fails to release deep ocean heat content or restore an ailing North Atlantic deep convection but partially stabilizes the Atlantic meridional overturning circulation. In contrast, the early intervention effectively mitigates changes in all of these features. Our results suggest that slow ocean timescales impair the efficacy of some SAI emergency interventions. |
format |
Other/Unknown Material |
author |
Pflüger, Daniel Wieners, Claudia Elisabeth Kampenhout, Leo van Wijngaard, René Dijkstra, Henk A. |
spellingShingle |
Pflüger, Daniel Wieners, Claudia Elisabeth Kampenhout, Leo van Wijngaard, René Dijkstra, Henk A. Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection |
author_facet |
Pflüger, Daniel Wieners, Claudia Elisabeth Kampenhout, Leo van Wijngaard, René Dijkstra, Henk A. |
author_sort |
Pflüger, Daniel |
title |
Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection |
title_short |
Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection |
title_full |
Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection |
title_fullStr |
Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection |
title_full_unstemmed |
Flawed Emergency Intervention: Slow Ocean Response to Abrupt Stratospheric Aerosol Injection |
title_sort |
flawed emergency intervention: slow ocean response to abrupt stratospheric aerosol injection |
publisher |
Authorea, Inc. |
publishDate |
2024 |
url |
http://dx.doi.org/10.22541/essoar.169447423.32818318/v2 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_doi |
https://doi.org/10.22541/essoar.169447423.32818318/v2 |
_version_ |
1800757471692718080 |