Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 models
Abstract The impact of the mean state on simulated western North Pacific anomalous anticyclone (WNPAC) during El Niño mature winter was studied through the diagnosis of 45 historical climate experiments from the CMIP6. The result indicates that in addition to the model-simulated El Niño-related sea...
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Nature Portfolio
2025-06-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-04048-7 |
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| author | Jiahao Lu Xieyuan Wang Yuhan Gong Zhiheng Chen Zongci Huang Xu Chen |
| author_facet | Jiahao Lu Xieyuan Wang Yuhan Gong Zhiheng Chen Zongci Huang Xu Chen |
| author_sort | Jiahao Lu |
| collection | DOAJ |
| description | Abstract The impact of the mean state on simulated western North Pacific anomalous anticyclone (WNPAC) during El Niño mature winter was studied through the diagnosis of 45 historical climate experiments from the CMIP6. The result indicates that in addition to the model-simulated El Niño-related sea surface temperature anomalies (SSTA), the atmospheric mean state also plays an important role in modulating the intermodel spread of WNPAC, especially the intensity and zonal location. On one hand, the central Pacific mean-state precipitation/moisture fields can modulate the western North Pacific (WNP) thermal condition responded to the SST forcing in the Niño-3.4 region through a local circulation-convective feedback, and thus affecting the intensity of WNPAC. On the other hand, the mean-state meridional vorticity gradient in the WNP and the westward-extended central Pacific warming may have acted together to regulate the WNPAC zonal location. |
| format | Article |
| id | doaj-art-7d2e2a7c481445daab10e1437fc7083c |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-7d2e2a7c481445daab10e1437fc7083c2025-08-20T03:10:29ZengNature PortfolioScientific Reports2045-23222025-06-0115111510.1038/s41598-025-04048-7Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 modelsJiahao Lu0Xieyuan Wang1Yuhan Gong2Zhiheng Chen3Zongci Huang4Xu Chen5Suzhou Meteorological BureauNanjing Gaochun Meteorological BureauDigital Engineering Technology Research Center for Maritime Safety and Security, School of Navigation Technology, Jiangsu Maritime InstituteChina Meteorological Administration Key Laboratory for Climate Prediction Studies, National Climate CenterJiangsu Meteorological ObservatorySuzhou Meteorological BureauAbstract The impact of the mean state on simulated western North Pacific anomalous anticyclone (WNPAC) during El Niño mature winter was studied through the diagnosis of 45 historical climate experiments from the CMIP6. The result indicates that in addition to the model-simulated El Niño-related sea surface temperature anomalies (SSTA), the atmospheric mean state also plays an important role in modulating the intermodel spread of WNPAC, especially the intensity and zonal location. On one hand, the central Pacific mean-state precipitation/moisture fields can modulate the western North Pacific (WNP) thermal condition responded to the SST forcing in the Niño-3.4 region through a local circulation-convective feedback, and thus affecting the intensity of WNPAC. On the other hand, the mean-state meridional vorticity gradient in the WNP and the westward-extended central Pacific warming may have acted together to regulate the WNPAC zonal location.https://doi.org/10.1038/s41598-025-04048-7Western North Pacific anomalous anticycloneIntermodel spreadSimulation biasMean state |
| spellingShingle | Jiahao Lu Xieyuan Wang Yuhan Gong Zhiheng Chen Zongci Huang Xu Chen Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 models Scientific Reports Western North Pacific anomalous anticyclone Intermodel spread Simulation bias Mean state |
| title | Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 models |
| title_full | Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 models |
| title_fullStr | Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 models |
| title_full_unstemmed | Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 models |
| title_short | Impact of mean state on intermodel spread of western North Pacific anomalous anticyclone during El Niño mature winter in CMIP6 models |
| title_sort | impact of mean state on intermodel spread of western north pacific anomalous anticyclone during el nino mature winter in cmip6 models |
| topic | Western North Pacific anomalous anticyclone Intermodel spread Simulation bias Mean state |
| url | https://doi.org/10.1038/s41598-025-04048-7 |
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