Distinct Impacts of the Central and Eastern Atlantic Niño on the European Climate

Abstract The Atlantic Niño is the primary interannual variability mode in the tropical Atlantic, with far‐reaching impacts on global climate. A recent study identified two types of the Atlantic Niño, each with its maximum warming centered in the central and eastern equatorial Atlantic, respectively....

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Main Authors: Baiyang Chen, Lei Zhang, Chunzai Wang
Format: Article
Language:English
Published: Wiley 2024-01-01
Series:Geophysical Research Letters
Online Access:https://doi.org/10.1029/2023GL107012
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author Baiyang Chen
Lei Zhang
Chunzai Wang
author_facet Baiyang Chen
Lei Zhang
Chunzai Wang
author_sort Baiyang Chen
collection DOAJ
description Abstract The Atlantic Niño is the primary interannual variability mode in the tropical Atlantic, with far‐reaching impacts on global climate. A recent study identified two types of the Atlantic Niño, each with its maximum warming centered in the central and eastern equatorial Atlantic, respectively. Through analysis of observational data and numerical model experiments, we find that the two Atlantic Niño types have distinct climatic impacts on Europe. This is because the central Atlantic Niño is associated with a pronounced increase in precipitation in the western tropical Atlantic, while the positive precipitation anomalies during the eastern type are mainly located in the eastern basin with weaker amplitudes. Consequently, compared to the eastern Atlantic Niño, the extra‐tropical atmospheric waves and the associated precipitation and temperature anomalies in Europe during the central type are stronger and shifted westward. Therefore, distinguishing between the two Atlantic Niño types may help improve seasonal climate predictions in Europe.
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institution DOAJ
issn 0094-8276
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publishDate 2024-01-01
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series Geophysical Research Letters
spelling doaj-art-c6d4151d5cb341a2afe5f390c76e35662025-08-20T03:11:04ZengWileyGeophysical Research Letters0094-82761944-80072024-01-01512n/an/a10.1029/2023GL107012Distinct Impacts of the Central and Eastern Atlantic Niño on the European ClimateBaiyang Chen0Lei Zhang1Chunzai Wang2State Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou ChinaState Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou ChinaState Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou ChinaAbstract The Atlantic Niño is the primary interannual variability mode in the tropical Atlantic, with far‐reaching impacts on global climate. A recent study identified two types of the Atlantic Niño, each with its maximum warming centered in the central and eastern equatorial Atlantic, respectively. Through analysis of observational data and numerical model experiments, we find that the two Atlantic Niño types have distinct climatic impacts on Europe. This is because the central Atlantic Niño is associated with a pronounced increase in precipitation in the western tropical Atlantic, while the positive precipitation anomalies during the eastern type are mainly located in the eastern basin with weaker amplitudes. Consequently, compared to the eastern Atlantic Niño, the extra‐tropical atmospheric waves and the associated precipitation and temperature anomalies in Europe during the central type are stronger and shifted westward. Therefore, distinguishing between the two Atlantic Niño types may help improve seasonal climate predictions in Europe.https://doi.org/10.1029/2023GL107012
spellingShingle Baiyang Chen
Lei Zhang
Chunzai Wang
Distinct Impacts of the Central and Eastern Atlantic Niño on the European Climate
Geophysical Research Letters
title Distinct Impacts of the Central and Eastern Atlantic Niño on the European Climate
title_full Distinct Impacts of the Central and Eastern Atlantic Niño on the European Climate
title_fullStr Distinct Impacts of the Central and Eastern Atlantic Niño on the European Climate
title_full_unstemmed Distinct Impacts of the Central and Eastern Atlantic Niño on the European Climate
title_short Distinct Impacts of the Central and Eastern Atlantic Niño on the European Climate
title_sort distinct impacts of the central and eastern atlantic nino on the european climate
url https://doi.org/10.1029/2023GL107012
work_keys_str_mv AT baiyangchen distinctimpactsofthecentralandeasternatlanticninoontheeuropeanclimate
AT leizhang distinctimpactsofthecentralandeasternatlanticninoontheeuropeanclimate
AT chunzaiwang distinctimpactsofthecentralandeasternatlanticninoontheeuropeanclimate