The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific
Abstract Based on the fifth generation reanalysis of European Centre for Medium–Range Weather Forecasts (ECMWF), Hadley Centre sea ice and sea surface temperature data, and ENSEMLES hindcasts, the impact of north tropical Atlantic (NTA) sea surface temperature (SST) anomalies in the ensuing spring o...
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crwiley:10.1002/joc.6500 2024-06-23T07:56:44+00:00 The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific Ma, Jing He, Weibang Chen, Zhehan Fu, Yihang Yin, Jiayue National Basic Research Program of China National Natural Science Foundation of China Startup Foundation for Introducing Talent of Nanjing University of Information Science and Technology 2020 http://dx.doi.org/10.1002/joc.6500 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6500 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6500 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6500 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6500 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 40, issue 11, page 4978-4991 ISSN 0899-8418 1097-0088 journal-article 2020 crwiley https://doi.org/10.1002/joc.6500 2024-06-11T04:46:48Z Abstract Based on the fifth generation reanalysis of European Centre for Medium–Range Weather Forecasts (ECMWF), Hadley Centre sea ice and sea surface temperature data, and ENSEMLES hindcasts, the impact of north tropical Atlantic (NTA) sea surface temperature (SST) anomalies in the ensuing spring of El Niño on the tropical Indian Ocean (TIO) and Northwest Pacific (NWP) is investigated using composites, singular value decomposition, and correlations. The anomalous SST warming in the NTA region in the decay spring of El Niño leads to a Gill‐type response of the overlying atmosphere in spring–summer. The Kelvin wave over the TIO stimulated by the NTA warming causes the anomalous easterlies in the regions of TIO and NWP, thereby the strengthening of the NWP subtropical anticyclone (NWPSA). The NTA SST warming also forces a local ascending motion, leading to a downward branch over the NWP region. This descent gives rise to the TIO‐NWP low‐level easterly anomalies and an intensification of the NWPSA. The anomalous easterly weakens the background southwesterly monsoon, accompanied by the increased atmospheric boundary layer specific humidity caused by the troposphere warming, suppressing upward latent heat fluxes, finally contributing to the North Indian Ocean (NIO) warming in summer. This indicates that the second warming of the NIO region in the following summer of El Niño may be partially attributed to the NTA warming in the ensuing spring of El Niño. This study improves our understanding of the impact of the NTA SST anomalies in the El Niño decay spring on the TIO and NWP regions, and emphasizes the importance of the NTA region in the pantropical inter‐basin interactions. Article in Journal/Newspaper Sea ice Wiley Online Library Indian Pacific International Journal of Climatology 40 11 4978 4991 |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Based on the fifth generation reanalysis of European Centre for Medium–Range Weather Forecasts (ECMWF), Hadley Centre sea ice and sea surface temperature data, and ENSEMLES hindcasts, the impact of north tropical Atlantic (NTA) sea surface temperature (SST) anomalies in the ensuing spring of El Niño on the tropical Indian Ocean (TIO) and Northwest Pacific (NWP) is investigated using composites, singular value decomposition, and correlations. The anomalous SST warming in the NTA region in the decay spring of El Niño leads to a Gill‐type response of the overlying atmosphere in spring–summer. The Kelvin wave over the TIO stimulated by the NTA warming causes the anomalous easterlies in the regions of TIO and NWP, thereby the strengthening of the NWP subtropical anticyclone (NWPSA). The NTA SST warming also forces a local ascending motion, leading to a downward branch over the NWP region. This descent gives rise to the TIO‐NWP low‐level easterly anomalies and an intensification of the NWPSA. The anomalous easterly weakens the background southwesterly monsoon, accompanied by the increased atmospheric boundary layer specific humidity caused by the troposphere warming, suppressing upward latent heat fluxes, finally contributing to the North Indian Ocean (NIO) warming in summer. This indicates that the second warming of the NIO region in the following summer of El Niño may be partially attributed to the NTA warming in the ensuing spring of El Niño. This study improves our understanding of the impact of the NTA SST anomalies in the El Niño decay spring on the TIO and NWP regions, and emphasizes the importance of the NTA region in the pantropical inter‐basin interactions. |
author2 |
National Basic Research Program of China National Natural Science Foundation of China Startup Foundation for Introducing Talent of Nanjing University of Information Science and Technology |
format |
Article in Journal/Newspaper |
author |
Ma, Jing He, Weibang Chen, Zhehan Fu, Yihang Yin, Jiayue |
spellingShingle |
Ma, Jing He, Weibang Chen, Zhehan Fu, Yihang Yin, Jiayue The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific |
author_facet |
Ma, Jing He, Weibang Chen, Zhehan Fu, Yihang Yin, Jiayue |
author_sort |
Ma, Jing |
title |
The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific |
title_short |
The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific |
title_full |
The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific |
title_fullStr |
The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific |
title_full_unstemmed |
The impact of north tropical Atlantic sea surface temperature anomalies in the ensuing spring of El Niño on the tropical Indian Ocean and Northwest Pacific |
title_sort |
impact of north tropical atlantic sea surface temperature anomalies in the ensuing spring of el niño on the tropical indian ocean and northwest pacific |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/joc.6500 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6500 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6500 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6500 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6500 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
International Journal of Climatology volume 40, issue 11, page 4978-4991 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.6500 |
container_title |
International Journal of Climatology |
container_volume |
40 |
container_issue |
11 |
container_start_page |
4978 |
op_container_end_page |
4991 |
_version_ |
1802650029701201920 |