Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming
The tropical Indian Ocean (TIO) has experienced enhanced surface warming relative to the tropical mean during the past century, but the underlying mechanisms remain unclear. Here we use single-forcing, large-ensemble coupled model simulations to demonstrate that changes of biomass burning (BMB) aero...
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Language: | English |
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2023
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Online Access: | https://doi.org/10.1038/s41467-023-39204-y |
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ftncar:oai:drupal-site.org:articles_26595 2023-10-25T01:41:24+02:00 Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming Tian, Yiqun (author) Hu, Shineng (author) Deser, Clara (author) 2023-06-14 https://doi.org/10.1038/s41467-023-39204-y en eng Nature Communications--Nat Commun--2041-1723 articles:26595 doi:10.1038/s41467-023-39204-y ark:/85065/d7h9996q Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. article Text 2023 ftncar https://doi.org/10.1038/s41467-023-39204-y 2023-09-25T18:18:22Z The tropical Indian Ocean (TIO) has experienced enhanced surface warming relative to the tropical mean during the past century, but the underlying mechanisms remain unclear. Here we use single-forcing, large-ensemble coupled model simulations to demonstrate that changes of biomass burning (BMB) aerosols have played a critical role in this TIO relative warming. Although the BMB aerosol changes have little effect on global mean temperatures due to regional cancellation, they significantly influence the pattern of warming over the tropical oceans. The reduction of BMB aerosols over the Indian subcontinent induces a TIO warming, while the increase of BMB aerosols over South America and Africa causes a cooling of the tropical Pacific and Atlantic, respectively. The resultant TIO relative warming leads to prominent global climate changes, including a westward expanded Indo-Pacific warm pool, a fresher TIO due to enhanced rainfall, and an intensified North Atlantic jet stream affecting European hydroclimate. Article in Journal/Newspaper North Atlantic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Indian Pacific Nature Communications 14 1 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
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ftncar |
language |
English |
description |
The tropical Indian Ocean (TIO) has experienced enhanced surface warming relative to the tropical mean during the past century, but the underlying mechanisms remain unclear. Here we use single-forcing, large-ensemble coupled model simulations to demonstrate that changes of biomass burning (BMB) aerosols have played a critical role in this TIO relative warming. Although the BMB aerosol changes have little effect on global mean temperatures due to regional cancellation, they significantly influence the pattern of warming over the tropical oceans. The reduction of BMB aerosols over the Indian subcontinent induces a TIO warming, while the increase of BMB aerosols over South America and Africa causes a cooling of the tropical Pacific and Atlantic, respectively. The resultant TIO relative warming leads to prominent global climate changes, including a westward expanded Indo-Pacific warm pool, a fresher TIO due to enhanced rainfall, and an intensified North Atlantic jet stream affecting European hydroclimate. |
author2 |
Tian, Yiqun (author) Hu, Shineng (author) Deser, Clara (author) |
format |
Article in Journal/Newspaper |
title |
Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming |
spellingShingle |
Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming |
title_short |
Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming |
title_full |
Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming |
title_fullStr |
Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming |
title_full_unstemmed |
Critical role of biomass burning aerosols in enhanced historical Indian Ocean warming |
title_sort |
critical role of biomass burning aerosols in enhanced historical indian ocean warming |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41467-023-39204-y |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Nature Communications--Nat Commun--2041-1723 articles:26595 doi:10.1038/s41467-023-39204-y ark:/85065/d7h9996q |
op_rights |
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
op_doi |
https://doi.org/10.1038/s41467-023-39204-y |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
_version_ |
1780737489137303552 |