Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climate
Abstract The Indian Ocean Dipole (IOD) and Tripole (IOT) represent primary modes of interannual variability in the Indian Ocean, impacting both regional and global climate. Unlike the IOD, which is closely related to the El Niño-Southern Oscillation (ENSO), our findings unveil a substantial influenc...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-024-00879-9 |
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| author | Mengyan Chen Matthew Collins Jin-Yi Yu Xin Wang Lei Zhang Chi-Yung Tam |
| author_facet | Mengyan Chen Matthew Collins Jin-Yi Yu Xin Wang Lei Zhang Chi-Yung Tam |
| author_sort | Mengyan Chen |
| collection | DOAJ |
| description | Abstract The Indian Ocean Dipole (IOD) and Tripole (IOT) represent primary modes of interannual variability in the Indian Ocean, impacting both regional and global climate. Unlike the IOD, which is closely related to the El Niño-Southern Oscillation (ENSO), our findings unveil a substantial influence of the Australian Monsoon on the IOT. An anomalously strong Monsoon induces local sea surface temperature (SST) variations via the wind-evaporation-SST mechanism, triggering atmospheric circulation anomalies in the eastern Indian Ocean. These circulation changes lead to changes in oceanic heat transport, facilitating the formation of the IOT. Our analysis reveals a strengthening connection between the Australian Monsoon and the IOT in recent decades, with a projected further strengthening under global warming. This contrasts with the diminished coupling between ENSO and IOD in recent decades from observations and model projections, illustrating evolving Indian Ocean dynamics under the warming climate. |
| format | Article |
| id | doaj-art-465aa909af9e4aecaead338a3776dbb2 |
| institution | OA Journals |
| issn | 2397-3722 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj-art-465aa909af9e4aecaead338a3776dbb22025-08-20T01:59:40ZengNature Portfolionpj Climate and Atmospheric Science2397-37222024-12-01711810.1038/s41612-024-00879-9Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climateMengyan Chen0Matthew Collins1Jin-Yi Yu2Xin Wang3Lei Zhang4Chi-Yung Tam5State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of SciencesDepartment of Mathematics and Statistics, University of ExeterDepartment of Earth System Science, University of CaliforniaState Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of SciencesState Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of SciencesDepartment of Earth and Environmental Sciences, The Chinese University of Hong KongAbstract The Indian Ocean Dipole (IOD) and Tripole (IOT) represent primary modes of interannual variability in the Indian Ocean, impacting both regional and global climate. Unlike the IOD, which is closely related to the El Niño-Southern Oscillation (ENSO), our findings unveil a substantial influence of the Australian Monsoon on the IOT. An anomalously strong Monsoon induces local sea surface temperature (SST) variations via the wind-evaporation-SST mechanism, triggering atmospheric circulation anomalies in the eastern Indian Ocean. These circulation changes lead to changes in oceanic heat transport, facilitating the formation of the IOT. Our analysis reveals a strengthening connection between the Australian Monsoon and the IOT in recent decades, with a projected further strengthening under global warming. This contrasts with the diminished coupling between ENSO and IOD in recent decades from observations and model projections, illustrating evolving Indian Ocean dynamics under the warming climate.https://doi.org/10.1038/s41612-024-00879-9 |
| spellingShingle | Mengyan Chen Matthew Collins Jin-Yi Yu Xin Wang Lei Zhang Chi-Yung Tam Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climate npj Climate and Atmospheric Science |
| title | Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climate |
| title_full | Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climate |
| title_fullStr | Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climate |
| title_full_unstemmed | Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climate |
| title_short | Emerging influence of the Australian Monsoon on Indian Ocean interannual variability in a warming climate |
| title_sort | emerging influence of the australian monsoon on indian ocean interannual variability in a warming climate |
| url | https://doi.org/10.1038/s41612-024-00879-9 |
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