Knowledge Management System Of Institute of Earth Environment, CAS
| Central Asian Drying at 3.3 Ma Linked to Tropical Forcing? | |
| Su, Qingda1,2; Nie, Junsheng1,3; Meng, Qingquan1; Heermance, Richard4; Gong, Lisha1; Luo, Zeng1; Wang, Zhao1; Zhang, Rui1; Garzione, Carmala5,6 | |
| 通讯作者 | Nie, Junsheng(jnie@lzu.edu.cn) ; Meng, Qingquan(mengqq@lzu.edu.cn) |
| 2019-09-12 | |
| 发表期刊 | GEOPHYSICAL RESEARCH LETTERS
 |
| ISSN | 0094-8276 |
| 页码 | 7 |
| 摘要 | The processes controlling middle-latitude environmental changes are poorly understood. Both high-latitude ice sheets and tropical oceans can affect climate and environments in middle latitudes, but separating their relative contribution is challenging. Coincidence of intensive Northern Hemisphere glaciations and increased dust accumulation rates at similar to 2.7 Ma on the Chinese Loess Plateau and North Pacific Ocean is often used to indicate high latitudes' dominant role on middle-latitude climate change. Here we present new and compile available evidence from the Qaidam Basin and the Tarim Basin of central Asia demonstrating a phase of drying at similar to 3.3 Ma. The drying is synchronous with proposed timing of closure of the Indonesian Seaway, which has been suggested to cause significant oceanic surface heat adjustments and corresponding decreased heat and moisture transport to middle/high latitudes. These new results suggest a tropical forcing of aridification for the late Pliocene central Asian environmental evolution. Plain Language Summary The timing and forcing mechanisms for past climate changes are instructive to predict future variations. It is widely believed that the aridification of central Asia and changes in monsoonal climate on the Chinese Loess Plateau formed at the Pliocene-Quaternary boundary forced by intensive Northern Hemisphere glaciations at similar to 2.7 Ma. In this study we demonstrate that aridification began earlier within the Qaidam and Tarim Basins, at similar to 3.3 Ma, when no significant change occurred for Northern Hemisphere ice sheets. Instead, this event was aligned with tropical Indian Ocean cooling as a result of closure of the Indonesian Seaway. Thus, we attribute this earlier drying event to tropical forcing rather than cryospheric change. This study reinterprets the forcing of aridification in central Asia and suggests that understanding future environments in this ecologically fragile region needs to consider tropical forcing. |
| DOI | 10.1029/2019GL084648 |
| 关键词[WOS] | NORTHERN-HEMISPHERE ; TURKANA BASIN ; CHINESE LOESS ; TARIM BASIN ; CLIMATE ; CIRCULATION ; EVOLUTION ; PACIFIC ; UPLIFT |
| 收录类别 | SCI ; SCI |
| 语种 | 英语 |
| 资助项目 | Second Tibetan Plateau Scientific Expedition[2019QZKK0704] ; National Natural Science Foundation of China[41672157] ; National Natural Science Foundation of China[41761144063] ; National Natural Science Foundation of China[41422204] ; Fundamental Research Funds for the Central Universities[lzujbky-2018-ot05] ; Fundamental Research Funds for the Central Universities[lzujbky-2017-it84] ; Program of Introducing Talents of Discipline to Universities from China's Ministry of Education[BP2018001] ; U.S. National Science Foundation[1348075] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1819] |
| WOS研究方向 | Geology |
| 项目资助者 | Second Tibetan Plateau Scientific Expedition ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Program of Introducing Talents of Discipline to Universities from China's Ministry of Education ; U.S. National Science Foundation ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000486330400001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/13543 |
| 专题 | 黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Nie, Junsheng; Meng, Qingquan |
| 作者单位 | 1.Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou, Gansu, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Calif State Univ Northridge, Dept Geol Sci, Northridge, CA 91330 USA 5.Univ Rochester, Dept Earth & Environm Sci, Rochester, NY USA 6.Rochester Inst Technol, Dept Environm Sci, Rochester, NY 14623 USA |
| 推荐引用方式 GB/T 7714 | Su, Qingda,Nie, Junsheng,Meng, Qingquan,et al. Central Asian Drying at 3.3 Ma Linked to Tropical Forcing?[J]. GEOPHYSICAL RESEARCH LETTERS,2019:7. |
| APA | Su, Qingda.,Nie, Junsheng.,Meng, Qingquan.,Heermance, Richard.,Gong, Lisha.,...&Garzione, Carmala.(2019).Central Asian Drying at 3.3 Ma Linked to Tropical Forcing?.GEOPHYSICAL RESEARCH LETTERS,7. |
| MLA | Su, Qingda,et al."Central Asian Drying at 3.3 Ma Linked to Tropical Forcing?".GEOPHYSICAL RESEARCH LETTERS (2019):7. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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