Changing Earth‐Sun Distance Drifts Global Circulation Patterns
Abstract Modern observations reveal that large‐scale ocean‐atmosphere circulation (OAC) is drifting toward higher latitudes under global warming. Paleoclimate proxies indicate that similar OAC drifts occurred on orbital timescale as well. However, the characteristics and underlying mechanisms remain...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-02-01
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| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2024GL113066 |
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| author | Hu Yang Yufei Liu Tainã M. L. Pinho Xiaoxu Shi Yi Zhong Qingsong Liu Gerrit Lohmann Jiping Liu Jingyu Zhang Xufeng Zheng Dake Chen |
| author_facet | Hu Yang Yufei Liu Tainã M. L. Pinho Xiaoxu Shi Yi Zhong Qingsong Liu Gerrit Lohmann Jiping Liu Jingyu Zhang Xufeng Zheng Dake Chen |
| author_sort | Hu Yang |
| collection | DOAJ |
| description | Abstract Modern observations reveal that large‐scale ocean‐atmosphere circulation (OAC) is drifting toward higher latitudes under global warming. Paleoclimate proxies indicate that similar OAC drifts occurred on orbital timescale as well. However, the characteristics and underlying mechanisms remain unclear. Here, by conducting simulations with different Earth's orbits, we investigate how changes in Earth‐Sun distance affect the OAC. We find that a closer Earth‐Sun distance (perihelion) causes a poleward drift of OAC. This drift in circulation is dynamically consistent with displacement of meridional temperature gradient. Precession alters the perihelion season on orbital timescales, leading to a seasonal poleward drift in OAC. This drift is amplified during the hemispheric summer, reaching magnitudes of ∼10° under high eccentricity. The identified OAC drifts reshape the seasonality of precipitation and temperature over land, as well as ocean upwelling and downwelling, ultimately affecting the distribution of Earth's terrestrial and marine ecosystems. |
| format | Article |
| id | doaj-art-9ee485dbc5d943c189d1cef4e6cb09fe |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-9ee485dbc5d943c189d1cef4e6cb09fe2025-08-20T02:31:10ZengWileyGeophysical Research Letters0094-82761944-80072025-02-01524n/an/a10.1029/2024GL113066Changing Earth‐Sun Distance Drifts Global Circulation PatternsHu Yang0Yufei Liu1Tainã M. L. Pinho2Xiaoxu Shi3Yi Zhong4Qingsong Liu5Gerrit Lohmann6Jiping Liu7Jingyu Zhang8Xufeng Zheng9Dake Chen10Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai ChinaHelmholtz Centre for Polar and Marine Research Alfred Wegener Institute Bremerhaven GermanySouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai ChinaCentre for Marine Magnetism Department of Ocean Science and Engineering Southern University of Science and Technology Shenzhen ChinaCentre for Marine Magnetism Department of Ocean Science and Engineering Southern University of Science and Technology Shenzhen ChinaHelmholtz Centre for Polar and Marine Research Alfred Wegener Institute Bremerhaven GermanySouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai ChinaCentre for Marine Magnetism Department of Ocean Science and Engineering Southern University of Science and Technology Shenzhen ChinaState Key Laboratory of Marine Resources Utilization in South China Sea Hainan University Haikou ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai ChinaAbstract Modern observations reveal that large‐scale ocean‐atmosphere circulation (OAC) is drifting toward higher latitudes under global warming. Paleoclimate proxies indicate that similar OAC drifts occurred on orbital timescale as well. However, the characteristics and underlying mechanisms remain unclear. Here, by conducting simulations with different Earth's orbits, we investigate how changes in Earth‐Sun distance affect the OAC. We find that a closer Earth‐Sun distance (perihelion) causes a poleward drift of OAC. This drift in circulation is dynamically consistent with displacement of meridional temperature gradient. Precession alters the perihelion season on orbital timescales, leading to a seasonal poleward drift in OAC. This drift is amplified during the hemispheric summer, reaching magnitudes of ∼10° under high eccentricity. The identified OAC drifts reshape the seasonality of precipitation and temperature over land, as well as ocean upwelling and downwelling, ultimately affecting the distribution of Earth's terrestrial and marine ecosystems.https://doi.org/10.1029/2024GL113066ocean circulationEarth's orbitprecessionpoleward shiftperihelionatmosphere circulation |
| spellingShingle | Hu Yang Yufei Liu Tainã M. L. Pinho Xiaoxu Shi Yi Zhong Qingsong Liu Gerrit Lohmann Jiping Liu Jingyu Zhang Xufeng Zheng Dake Chen Changing Earth‐Sun Distance Drifts Global Circulation Patterns Geophysical Research Letters ocean circulation Earth's orbit precession poleward shift perihelion atmosphere circulation |
| title | Changing Earth‐Sun Distance Drifts Global Circulation Patterns |
| title_full | Changing Earth‐Sun Distance Drifts Global Circulation Patterns |
| title_fullStr | Changing Earth‐Sun Distance Drifts Global Circulation Patterns |
| title_full_unstemmed | Changing Earth‐Sun Distance Drifts Global Circulation Patterns |
| title_short | Changing Earth‐Sun Distance Drifts Global Circulation Patterns |
| title_sort | changing earth sun distance drifts global circulation patterns |
| topic | ocean circulation Earth's orbit precession poleward shift perihelion atmosphere circulation |
| url | https://doi.org/10.1029/2024GL113066 |
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