Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer
Abstract This study aims to characterize the interhemispheric teleconnection pattern, which is established by the South America (SA) summer monsoon over the Atlantic Ocean during January and February, and referred it as the Atlantic symmetric pattern (ASP). The ASP is characterized using the leading...
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crioppubl:10.1088/1748-9326/acdbdf 2024-06-23T07:54:59+00:00 Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer Tseng, Wan-Ling Lee, Yu-Chi Wang, Yi-Chi Hsu, Huang-Hsiung Keenlyside, Noel National Science and Techology Council, Taiwan 2023 http://dx.doi.org/10.1088/1748-9326/acdbdf https://iopscience.iop.org/article/10.1088/1748-9326/acdbdf https://iopscience.iop.org/article/10.1088/1748-9326/acdbdf/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 18, issue 7, page 074003 ISSN 1748-9326 journal-article 2023 crioppubl https://doi.org/10.1088/1748-9326/acdbdf 2024-06-03T08:15:11Z Abstract This study aims to characterize the interhemispheric teleconnection pattern, which is established by the South America (SA) summer monsoon over the Atlantic Ocean during January and February, and referred it as the Atlantic symmetric pattern (ASP). The ASP is characterized using the leading mode of interannual sea surface temperature (SST) variability of the Southwest Atlantic Ocean, where strong convection-SST coupling occurs. The pattern is manifested as two anomalous cyclonic-anticyclonic-cyclonic circulation trains aligned meridionally over the Atlantic Ocean, with a distinct SST dipole of the Southwest Atlantic Ocean and a tripole of the North Atlantic Ocean. The interhemispheric wave trains of the ASP are excited as a Gill-type response to convective activity in the SA summer monsoon, as confirmed in linear baroclinic model. Complementing previous studies on observed interhemispheric connection in the Atlantic, our findings highlight the importance of characterizing the ASP and its role in linking the South Atlantic SST, the SA summer monsoon, and North Atlantic climate. Further research is warranted to explore the impacts of the ASP on the Northern Hemisphere and its interactions with other climatic modes. Article in Journal/Newspaper North Atlantic IOP Publishing Austral Environmental Research Letters 18 7 074003 |
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Abstract This study aims to characterize the interhemispheric teleconnection pattern, which is established by the South America (SA) summer monsoon over the Atlantic Ocean during January and February, and referred it as the Atlantic symmetric pattern (ASP). The ASP is characterized using the leading mode of interannual sea surface temperature (SST) variability of the Southwest Atlantic Ocean, where strong convection-SST coupling occurs. The pattern is manifested as two anomalous cyclonic-anticyclonic-cyclonic circulation trains aligned meridionally over the Atlantic Ocean, with a distinct SST dipole of the Southwest Atlantic Ocean and a tripole of the North Atlantic Ocean. The interhemispheric wave trains of the ASP are excited as a Gill-type response to convective activity in the SA summer monsoon, as confirmed in linear baroclinic model. Complementing previous studies on observed interhemispheric connection in the Atlantic, our findings highlight the importance of characterizing the ASP and its role in linking the South Atlantic SST, the SA summer monsoon, and North Atlantic climate. Further research is warranted to explore the impacts of the ASP on the Northern Hemisphere and its interactions with other climatic modes. |
author2 |
National Science and Techology Council, Taiwan |
format |
Article in Journal/Newspaper |
author |
Tseng, Wan-Ling Lee, Yu-Chi Wang, Yi-Chi Hsu, Huang-Hsiung Keenlyside, Noel |
spellingShingle |
Tseng, Wan-Ling Lee, Yu-Chi Wang, Yi-Chi Hsu, Huang-Hsiung Keenlyside, Noel Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer |
author_facet |
Tseng, Wan-Ling Lee, Yu-Chi Wang, Yi-Chi Hsu, Huang-Hsiung Keenlyside, Noel |
author_sort |
Tseng, Wan-Ling |
title |
Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer |
title_short |
Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer |
title_full |
Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer |
title_fullStr |
Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer |
title_full_unstemmed |
Characterizing Atlantic interhemispheric teleconnection established by South American monsoon in austral summer |
title_sort |
characterizing atlantic interhemispheric teleconnection established by south american monsoon in austral summer |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
http://dx.doi.org/10.1088/1748-9326/acdbdf https://iopscience.iop.org/article/10.1088/1748-9326/acdbdf https://iopscience.iop.org/article/10.1088/1748-9326/acdbdf/pdf |
geographic |
Austral |
geographic_facet |
Austral |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Environmental Research Letters volume 18, issue 7, page 074003 ISSN 1748-9326 |
op_rights |
http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/acdbdf |
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Environmental Research Letters |
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18 |
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7 |
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074003 |
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1802647364373053440 |