Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation
Abstract The multidecadal variability of Indian Ocean sea surface temperature (IOSST) has an important impact on both the regional Indian Ocean climate and the global climate. Here, we explore multidecadal variability in the annual IOSST. Observational analysis shows that the annual IOSST multidecad...
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crspringernat:10.1007/s00382-021-05643-w 2023-05-15T17:31:09+02:00 Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation Xie, Tiejun Li, Jianping Chen, Kaiqi Zhang, Yazhou Sun, Cheng the National Key R&D Program of China National Natural Science Foundation of China (NSFC) Project 2021 http://dx.doi.org/10.1007/s00382-021-05643-w https://link.springer.com/content/pdf/10.1007/s00382-021-05643-w.pdf https://link.springer.com/article/10.1007/s00382-021-05643-w/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Climate Dynamics volume 56, issue 9-10, page 3277-3294 ISSN 0930-7575 1432-0894 Atmospheric Science journal-article 2021 crspringernat https://doi.org/10.1007/s00382-021-05643-w 2022-01-04T10:57:20Z Abstract The multidecadal variability of Indian Ocean sea surface temperature (IOSST) has an important impact on both the regional Indian Ocean climate and the global climate. Here, we explore multidecadal variability in the annual IOSST. Observational analysis shows that the annual IOSST multidecadal variability is not only related to the Pacific Decadal Oscillation (PDO), but also to the North Atlantic Oscillation (NAO). The NAO leads by 15–20 years the detrended annual IOSST in which the PDO signal of the same period has been removed. Further analysis reveals that the NAO leads the annual IOSST multidecadal variability through its leading effect on the Atlantic Multidecadal Oscillation (AMO). The AMO affects the vertical wind anomaly in the Indian Ocean region through the Atlantic–Indian Ocean multidecadal teleconnection (AIMT), which in turn affects the net longwave radiation in the Indian Ocean region, thus driving the annual IOSST multidecadal variability. A Hasselmann model based on NAO and PDO further verify the joint influence of the NAO and PDO on the multidecadal variability of the IOSST. A PDO-based linear model and a climate model that incorporates the NAO signal are also constructed for the annual IOSST. Results show that the climate model with the NAO signal can better simulate the annual IOSST. This again verifies that the NAO is part of the annual IOSST multidecadal variability source, indicating that the annual IOSST variability may be due to the combined influences of the NAO and PDO. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Springer Nature (via Crossref) Indian Pacific Climate Dynamics 56 9-10 3277 3294 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
Atmospheric Science |
spellingShingle |
Atmospheric Science Xie, Tiejun Li, Jianping Chen, Kaiqi Zhang, Yazhou Sun, Cheng Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation |
topic_facet |
Atmospheric Science |
description |
Abstract The multidecadal variability of Indian Ocean sea surface temperature (IOSST) has an important impact on both the regional Indian Ocean climate and the global climate. Here, we explore multidecadal variability in the annual IOSST. Observational analysis shows that the annual IOSST multidecadal variability is not only related to the Pacific Decadal Oscillation (PDO), but also to the North Atlantic Oscillation (NAO). The NAO leads by 15–20 years the detrended annual IOSST in which the PDO signal of the same period has been removed. Further analysis reveals that the NAO leads the annual IOSST multidecadal variability through its leading effect on the Atlantic Multidecadal Oscillation (AMO). The AMO affects the vertical wind anomaly in the Indian Ocean region through the Atlantic–Indian Ocean multidecadal teleconnection (AIMT), which in turn affects the net longwave radiation in the Indian Ocean region, thus driving the annual IOSST multidecadal variability. A Hasselmann model based on NAO and PDO further verify the joint influence of the NAO and PDO on the multidecadal variability of the IOSST. A PDO-based linear model and a climate model that incorporates the NAO signal are also constructed for the annual IOSST. Results show that the climate model with the NAO signal can better simulate the annual IOSST. This again verifies that the NAO is part of the annual IOSST multidecadal variability source, indicating that the annual IOSST variability may be due to the combined influences of the NAO and PDO. |
author2 |
the National Key R&D Program of China National Natural Science Foundation of China (NSFC) Project |
format |
Article in Journal/Newspaper |
author |
Xie, Tiejun Li, Jianping Chen, Kaiqi Zhang, Yazhou Sun, Cheng |
author_facet |
Xie, Tiejun Li, Jianping Chen, Kaiqi Zhang, Yazhou Sun, Cheng |
author_sort |
Xie, Tiejun |
title |
Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation |
title_short |
Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation |
title_full |
Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation |
title_fullStr |
Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation |
title_full_unstemmed |
Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation |
title_sort |
origin of indian ocean multidecadal climate variability: role of the north atlantic oscillation |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1007/s00382-021-05643-w https://link.springer.com/content/pdf/10.1007/s00382-021-05643-w.pdf https://link.springer.com/article/10.1007/s00382-021-05643-w/fulltext.html |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Climate Dynamics volume 56, issue 9-10, page 3277-3294 ISSN 0930-7575 1432-0894 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00382-021-05643-w |
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Climate Dynamics |
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56 |
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9-10 |
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3277 |
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3294 |
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1766128498243534848 |