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| DOI | 10.1038/s41561-022-00919-0 |
| Neogene South Asian monsoon rainfall and wind histories diverged due to topographic effects | |
| Sarr A.-C.; Donnadieu Y.; Bolton C.T.; Ladant J.-B.; Licht A.; Fluteau F.; Laugié M.; Tardif D.; Dupont-Nivet G. | |
| 发表日期 | 2022 |
| ISSN | 1752-0894 |
| 起始页码 | 314 |
| 结束页码 | 319 |
| 卷号 | 15期号:4 |
| 英文摘要 | The drivers of the evolution of the South Asian Monsoon remain widely debated. An intensification of monsoonal rainfall recorded in terrestrial and marine sediment archives from the earliest Miocene (23–20 million years ago (Ma)) is generally attributed to Himalayan uplift. However, Indian Ocean palaeorecords place the onset of a strong monsoon around 13 Ma, linked to strengthening of the southwesterly winds of the Somali Jet that also force Arabian Sea upwelling. Here we reconcile these divergent records using Earth system model simulations to evaluate the interactions between palaeogeography and ocean–atmosphere dynamics. We show that factors forcing the South Asian Monsoon circulation versus rainfall are decoupled and diachronous. Himalayan and Tibetan Plateau topography predominantly controlled early Miocene rainfall patterns, with limited impact on ocean–atmosphere circulation. The uplift of the East African and Middle Eastern topography played a pivotal role in the establishment of the modern Somali Jet structure above the western Indian Ocean, while strong upwelling initiated as a direct consequence of the emergence of the Arabian Peninsula and the onset of modern-like atmospheric circulation. Our results emphasize that although elevated rainfall seasonality was probably a persistent feature since the India–Asia collision in the Paleogene, modern-like monsoonal atmospheric circulation only emerged in the late Neogene. © 2022, The Author(s), under exclusive licence to Springer Nature Limited. |
| 语种 | 英语 |
| scopus关键词 | atmospheric circulation; marine sediment; Miocene; paleogeography; rainfall; seasonality; uplift; Arabian Peninsula; Arabian Sea; China; Indian Ocean; Indian Ocean; Qinghai-Xizang Plateau |
| 来源期刊 | Nature Geoscience
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/262222 |
| 作者单位 | Aix-Marseille Université, CNRS, IRD, INRAE, Collège de France, CEREGE, Aix-en-Provence, France |
| 推荐引用方式 GB/T 7714 | Sarr A.-C.； Donnadieu Y.； Bolton C.T.； Ladant J.-B.； Licht A.； Fluteau F.； Laugié M.； Tardif D.； Dupont-Nivet G.. Neogene South Asian monsoon rainfall and wind histories diverged due to topographic effects[J],2022,15(4). |
| APA | Sarr A.-C.； Donnadieu Y.； Bolton C.T.； Ladant J.-B.； Licht A.； Fluteau F.； Laugié M.； Tardif D.； Dupont-Nivet G..(2022).Neogene South Asian monsoon rainfall and wind histories diverged due to topographic effects.Nature Geoscience,15(4). |
| MLA | Sarr A.-C.； Donnadieu Y.； Bolton C.T.； Ladant J.-B.； Licht A.； Fluteau F.； Laugié M.； Tardif D.； Dupont-Nivet G.."Neogene South Asian monsoon rainfall and wind histories diverged due to topographic effects".Nature Geoscience 15.4(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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