Indian Ocean warming as a driver of the North Atlantic warming hole
Over the past century, the subpolar North Atlantic experienced slight cooling or suppressed warming, relative to the background positive temperature trends, often dubbed the North Atlantic warming hole (NAWH). The causes of the NAWH remain under debate. Here we conduct coupled ocean-atmosphere simul...
Published in: | Nature Communications |
---|---|
Main Authors: | , |
Format: | Text |
Language: | English |
Published: |
Nature Publishing Group UK
2020
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7509804/ http://www.ncbi.nlm.nih.gov/pubmed/32963256 https://doi.org/10.1038/s41467-020-18522-5 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:7509804 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:7509804 2023-05-15T16:28:54+02:00 Indian Ocean warming as a driver of the North Atlantic warming hole Hu, Shineng Fedorov, Alexey V. 2020-09-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7509804/ http://www.ncbi.nlm.nih.gov/pubmed/32963256 https://doi.org/10.1038/s41467-020-18522-5 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7509804/ http://www.ncbi.nlm.nih.gov/pubmed/32963256 http://dx.doi.org/10.1038/s41467-020-18522-5 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Nat Commun Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-18522-5 2020-10-11T00:19:20Z Over the past century, the subpolar North Atlantic experienced slight cooling or suppressed warming, relative to the background positive temperature trends, often dubbed the North Atlantic warming hole (NAWH). The causes of the NAWH remain under debate. Here we conduct coupled ocean-atmosphere simulations to demonstrate that enhanced Indian Ocean warming, another salient feature of global warming, could increase local rainfall and through teleconnections strengthen surface westerly winds south of Greenland, cooling the subpolar North Atlantic. In decades to follow however, this cooling effect would gradually vanish as the Indian Ocean warming acts to strengthen the Atlantic meridional overturning circulation (AMOC). We argue that the historical NAWH can potentially be explained by such atmospheric mechanisms reliant on surface wind changes, while oceanic mechanisms related to AMOC changes become more important on longer timescales. Thus, explaining the North Atlantic temperature trends and particularly the NAWH requires considering both atmospheric and oceanic mechanisms. Text Greenland North Atlantic PubMed Central (PMC) Greenland Indian Nature Communications 11 1 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Article |
spellingShingle |
Article Hu, Shineng Fedorov, Alexey V. Indian Ocean warming as a driver of the North Atlantic warming hole |
topic_facet |
Article |
description |
Over the past century, the subpolar North Atlantic experienced slight cooling or suppressed warming, relative to the background positive temperature trends, often dubbed the North Atlantic warming hole (NAWH). The causes of the NAWH remain under debate. Here we conduct coupled ocean-atmosphere simulations to demonstrate that enhanced Indian Ocean warming, another salient feature of global warming, could increase local rainfall and through teleconnections strengthen surface westerly winds south of Greenland, cooling the subpolar North Atlantic. In decades to follow however, this cooling effect would gradually vanish as the Indian Ocean warming acts to strengthen the Atlantic meridional overturning circulation (AMOC). We argue that the historical NAWH can potentially be explained by such atmospheric mechanisms reliant on surface wind changes, while oceanic mechanisms related to AMOC changes become more important on longer timescales. Thus, explaining the North Atlantic temperature trends and particularly the NAWH requires considering both atmospheric and oceanic mechanisms. |
format |
Text |
author |
Hu, Shineng Fedorov, Alexey V. |
author_facet |
Hu, Shineng Fedorov, Alexey V. |
author_sort |
Hu, Shineng |
title |
Indian Ocean warming as a driver of the North Atlantic warming hole |
title_short |
Indian Ocean warming as a driver of the North Atlantic warming hole |
title_full |
Indian Ocean warming as a driver of the North Atlantic warming hole |
title_fullStr |
Indian Ocean warming as a driver of the North Atlantic warming hole |
title_full_unstemmed |
Indian Ocean warming as a driver of the North Atlantic warming hole |
title_sort |
indian ocean warming as a driver of the north atlantic warming hole |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7509804/ http://www.ncbi.nlm.nih.gov/pubmed/32963256 https://doi.org/10.1038/s41467-020-18522-5 |
geographic |
Greenland Indian |
geographic_facet |
Greenland Indian |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7509804/ http://www.ncbi.nlm.nih.gov/pubmed/32963256 http://dx.doi.org/10.1038/s41467-020-18522-5 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-18522-5 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766018591689277440 |