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DOI | 10.1029/2018GL079930 |
Global Cooling Contributed to the Establishment of a Modern-Like East Asian Monsoon Climate by the Early Miocene | |
Zhang, Ran1; Zhang, Zhongshi2,3; Jiang, Dabang1,4,5 | |
2018-11-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:21页码:11941-11948 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Norway |
英文摘要 | The establishment of a modern-like monsoon climate in East Asia by the early Miocene was a complex process forced by several factors, and previous studies paid less attention to global cooling. Here we investigate this process using climate modeling by considering changes in topography and global cooling under the early Miocene boundary conditions. Using early Miocene paleogeography and an atmospheric CO2 concentration of 560 ppmv, our model results indicate that a nonzonal climate pattern has appeared in East China but that this climate exhibits weak precipitation and wind seasonality. Such seasonality strengthens as the concentration of atmospheric CO2 decreases from 560 to 420 ppmv and resembles the modern-like condition after the growth of the Antarctic ice sheet. Although the development of East Asian topography can further strengthen this seasonality, our results indicate that global cooling is also pivotal for the establishment of a modern-like monsoon climate in East Asia. Plain Language Summary Up to now, there are still debates about what caused the formation of a modern-like monsoon climate in East Asia by the early Miocene. In particular, it appears that the growth of the Tibetan Plateau markedly changed the atmospheric circulation and precipitation by intensifying the land-sea thermal contrast and pressure gradient. While, some studies have emphasized that changes in the land-sea distribution were also very important in this process. By comparison, previous studies pay less attention to global cooling. Here we investigate this process using climate modeling under the early Miocene boundary conditions. Our simulations indicate that the decrease in the atmospheric CO2 concentration and the growth of the Antarctic ice sheet can strengthen the precipitation and wind seasonality in East China and facilitate the establishment of a modern-like East Asian monsoon climate. These results indicate that global cooling is also very important for the establishment of a modern-like monsoon climate in East Asia, providing better understanding of climate effects of global cooling in this process. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451832600047 |
WOS关键词 | TIBETAN PLATEAU ; ICE-SHEET ; ATMOSPHERIC CIRCULATION ; MIDDLE MIOCENE ; EOCENE ; UPLIFT ; ARIDIFICATION ; SENSITIVITY ; EVOLUTION ; RECORDS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26949 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China; 2.China Univ Geosci Wuhan, Sch Environm Studies, Dept Atmospher Sci, Wuhan, Hubei, Peoples R China; 3.Uni Res & Bjerknes Ctr Climate Res, Uni Res Climate, Bergen, Norway; 4.Chengdu Univ Informat Technol, Joint Lab Climate & Environm Change, Chengdu, Sichuan, Peoples R China; 5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Ran,Zhang, Zhongshi,Jiang, Dabang. Global Cooling Contributed to the Establishment of a Modern-Like East Asian Monsoon Climate by the Early Miocene[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(21):11941-11948. |
APA | Zhang, Ran,Zhang, Zhongshi,&Jiang, Dabang.(2018).Global Cooling Contributed to the Establishment of a Modern-Like East Asian Monsoon Climate by the Early Miocene.GEOPHYSICAL RESEARCH LETTERS,45(21),11941-11948. |
MLA | Zhang, Ran,et al."Global Cooling Contributed to the Establishment of a Modern-Like East Asian Monsoon Climate by the Early Miocene".GEOPHYSICAL RESEARCH LETTERS 45.21(2018):11941-11948. |
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