Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variations
Abstract Tropical convection anomaly could serve as a crucial driver of global atmospheric teleconnections and weather extremes around the world. However, quantifying the dominances of convection anomalies with regional discrepancies, relevant for the variations of global atmospheric circulations, r...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-025-01140-7 |
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| author | Fenying Cai Shuheng Lin Dieter Gerten Song Yang Xingwen Jiang Zhen Su Jürgen Kurths |
| author_facet | Fenying Cai Shuheng Lin Dieter Gerten Song Yang Xingwen Jiang Zhen Su Jürgen Kurths |
| author_sort | Fenying Cai |
| collection | DOAJ |
| description | Abstract Tropical convection anomaly could serve as a crucial driver of global atmospheric teleconnections and weather extremes around the world. However, quantifying the dominances of convection anomalies with regional discrepancies, relevant for the variations of global atmospheric circulations, remains challenging. By using a network analysis of observation-based rainfall and ERA5 reanalysis datasets, our study reveals that El Niño-like convection is the most primary rainfall pattern driving the global atmospheric circulation variations. High local concurrences of above-normal rainfall events over equatorial central-eastern Pacific amplify their impacts, even though the most intense rainfall anomalies are observed near the Maritime Continent. Furthermore, we find that the impacts of El Niño-like convection will be tripled by the end of this century, as projected consistently by 23 climate models. Such “rich nodes get richer” phenomenon is probably attributable to the dipolar rainfall changes over the equatorial western-central Pacific. This study highlights the dominant role of El Niño-like convection on the global climate variations, especially under the future changing climate. |
| format | Article |
| id | doaj-art-4bbe74731c92483393ea06e7133f09a8 |
| institution | Kabale University |
| issn | 2397-3722 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj-art-4bbe74731c92483393ea06e7133f09a82025-08-20T04:01:25ZengNature Portfolionpj Climate and Atmospheric Science2397-37222025-07-018111010.1038/s41612-025-01140-7Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variationsFenying Cai0Shuheng Lin1Dieter Gerten2Song Yang3Xingwen Jiang4Zhen Su5Jürgen Kurths6Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz AssociationKey Laboratory of Humid Subtropical Eco-geographical Process (Ministry of Education), College of Geographical Sciences, Fujian Normal UniversityPotsdam Institute for Climate Impact Research (PIK), Member of the Leibniz AssociationSchool of Atmospheric Sciences, Sun Yat-sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Institute of Tibetan Plateau Meteorology, China Meteorological AdministrationPotsdam Institute for Climate Impact Research (PIK), Member of the Leibniz AssociationPotsdam Institute for Climate Impact Research (PIK), Member of the Leibniz AssociationAbstract Tropical convection anomaly could serve as a crucial driver of global atmospheric teleconnections and weather extremes around the world. However, quantifying the dominances of convection anomalies with regional discrepancies, relevant for the variations of global atmospheric circulations, remains challenging. By using a network analysis of observation-based rainfall and ERA5 reanalysis datasets, our study reveals that El Niño-like convection is the most primary rainfall pattern driving the global atmospheric circulation variations. High local concurrences of above-normal rainfall events over equatorial central-eastern Pacific amplify their impacts, even though the most intense rainfall anomalies are observed near the Maritime Continent. Furthermore, we find that the impacts of El Niño-like convection will be tripled by the end of this century, as projected consistently by 23 climate models. Such “rich nodes get richer” phenomenon is probably attributable to the dipolar rainfall changes over the equatorial western-central Pacific. This study highlights the dominant role of El Niño-like convection on the global climate variations, especially under the future changing climate.https://doi.org/10.1038/s41612-025-01140-7 |
| spellingShingle | Fenying Cai Shuheng Lin Dieter Gerten Song Yang Xingwen Jiang Zhen Su Jürgen Kurths Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variations npj Climate and Atmospheric Science |
| title | Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variations |
| title_full | Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variations |
| title_fullStr | Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variations |
| title_full_unstemmed | Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variations |
| title_short | Intensified dominance of El Niño-like convection relevant for global atmospheric circulation variations |
| title_sort | intensified dominance of el nino like convection relevant for global atmospheric circulation variations |
| url | https://doi.org/10.1038/s41612-025-01140-7 |
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