Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection
The ENSO-induced Pacific–South America (PSA) pattern is an important atmospheric bridge in linking the Antarctic climate to the tropical Pacific. The AGCM simulated PSA-like responses to ENSO are evidently weaker than the observed in terms of its intensity due to the lack of air–sea coupling process...
Published in: | Advances in Climate Change Research |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
KeAi Communications Co., Ltd.
2023
|
Subjects: | |
Online Access: | https://doi.org/10.1016/j.accre.2023.06.001 https://doaj.org/article/f3c607393d9344bfac1cbd84284c0480 |
id |
ftdoajarticles:oai:doaj.org/article:f3c607393d9344bfac1cbd84284c0480 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:f3c607393d9344bfac1cbd84284c0480 2023-08-20T04:00:57+02:00 Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection Xue-Qian Sun Shuang-Lin Li Dong-Xia Yang 2023-06-01T00:00:00Z https://doi.org/10.1016/j.accre.2023.06.001 https://doaj.org/article/f3c607393d9344bfac1cbd84284c0480 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S1674927823000680 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2023.06.001 https://doaj.org/article/f3c607393d9344bfac1cbd84284c0480 Advances in Climate Change Research, Vol 14, Iss 3, Pp 363-371 (2023) Tasman Sea Air–sea coupling ENSO–South Pacific atmospheric teleconnection Meteorology. Climatology QC851-999 Social sciences (General) H1-99 article 2023 ftdoajarticles https://doi.org/10.1016/j.accre.2023.06.001 2023-07-30T00:34:03Z The ENSO-induced Pacific–South America (PSA) pattern is an important atmospheric bridge in linking the Antarctic climate to the tropical Pacific. The AGCM simulated PSA-like responses to ENSO are evidently weaker than the observed in terms of its intensity due to the lack of air–sea coupling processes. The Tasman Sea features active air–sea interactions. However, how and to what extent the air–sea coupling explains the deficiency of the AGCM responses to ENSO is unclear. In this study, the role of the air–sea coupling elsewhere the tropical Pacific in shaping the ENSO–South Pacific teleconnection is first estimated by comparing the coupled tropical Pacific pacemaker experiments (PACE) derived from the Community Earth System Model version 1 (CESM1) and the parallel Pacific Ocean–Global Atmosphere experiments (POGA) with the same atmospheric component model of CESM1. Our results suggest that the air–sea coupling elsewhere the tropical Pacific greatly intensifies the South Pacific atmospheric response to ENSO. Then the separated impact of air–sea coupling over the Tasman Sea is stressed with another set of AGCM experiments forced with the PACE sea surface temperature (SST) outputs in the Tasman Sea. The results show that the atmospheric response to the SST anomalies in the Tasman Sea bears a remarkable resemblance to that due to the air–sea coupling elsewhere the tropical Pacific, and explains about 30% of the intensified amplitude. This highlights a substantial contribution of the air–sea coupling over the Tasman Sea to intensifying the extratropical South Pacific atmospheric responses to ENSO, and provides a new perspective on the connection between tropical Pacific and Antarctic climate change. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic Pacific The Antarctic Advances in Climate Change Research 14 3 363 371 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Tasman Sea Air–sea coupling ENSO–South Pacific atmospheric teleconnection Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
spellingShingle |
Tasman Sea Air–sea coupling ENSO–South Pacific atmospheric teleconnection Meteorology. Climatology QC851-999 Social sciences (General) H1-99 Xue-Qian Sun Shuang-Lin Li Dong-Xia Yang Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection |
topic_facet |
Tasman Sea Air–sea coupling ENSO–South Pacific atmospheric teleconnection Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
description |
The ENSO-induced Pacific–South America (PSA) pattern is an important atmospheric bridge in linking the Antarctic climate to the tropical Pacific. The AGCM simulated PSA-like responses to ENSO are evidently weaker than the observed in terms of its intensity due to the lack of air–sea coupling processes. The Tasman Sea features active air–sea interactions. However, how and to what extent the air–sea coupling explains the deficiency of the AGCM responses to ENSO is unclear. In this study, the role of the air–sea coupling elsewhere the tropical Pacific in shaping the ENSO–South Pacific teleconnection is first estimated by comparing the coupled tropical Pacific pacemaker experiments (PACE) derived from the Community Earth System Model version 1 (CESM1) and the parallel Pacific Ocean–Global Atmosphere experiments (POGA) with the same atmospheric component model of CESM1. Our results suggest that the air–sea coupling elsewhere the tropical Pacific greatly intensifies the South Pacific atmospheric response to ENSO. Then the separated impact of air–sea coupling over the Tasman Sea is stressed with another set of AGCM experiments forced with the PACE sea surface temperature (SST) outputs in the Tasman Sea. The results show that the atmospheric response to the SST anomalies in the Tasman Sea bears a remarkable resemblance to that due to the air–sea coupling elsewhere the tropical Pacific, and explains about 30% of the intensified amplitude. This highlights a substantial contribution of the air–sea coupling over the Tasman Sea to intensifying the extratropical South Pacific atmospheric responses to ENSO, and provides a new perspective on the connection between tropical Pacific and Antarctic climate change. |
format |
Article in Journal/Newspaper |
author |
Xue-Qian Sun Shuang-Lin Li Dong-Xia Yang |
author_facet |
Xue-Qian Sun Shuang-Lin Li Dong-Xia Yang |
author_sort |
Xue-Qian Sun |
title |
Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection |
title_short |
Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection |
title_full |
Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection |
title_fullStr |
Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection |
title_full_unstemmed |
Air–sea coupling over the Tasman Sea intensifies the ENSO-related South Pacific atmospheric teleconnection |
title_sort |
air–sea coupling over the tasman sea intensifies the enso-related south pacific atmospheric teleconnection |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2023 |
url |
https://doi.org/10.1016/j.accre.2023.06.001 https://doaj.org/article/f3c607393d9344bfac1cbd84284c0480 |
geographic |
Antarctic Pacific The Antarctic |
geographic_facet |
Antarctic Pacific The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Advances in Climate Change Research, Vol 14, Iss 3, Pp 363-371 (2023) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674927823000680 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2023.06.001 https://doaj.org/article/f3c607393d9344bfac1cbd84284c0480 |
op_doi |
https://doi.org/10.1016/j.accre.2023.06.001 |
container_title |
Advances in Climate Change Research |
container_volume |
14 |
container_issue |
3 |
container_start_page |
363 |
op_container_end_page |
371 |
_version_ |
1774721601724481536 |