Early Eocene Asian climate dominated by desert and steppe with limited monsoons
文献类型：期刊论文
| 作者 | Zhang, Zhongshi1,2; Flatoy, Frode1; Wang, Huijun2; Bethke, Ingo1,3; Bentsen, Mats1,3; Guo, Zhengtang4 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2012-01-30 |
| 卷号 | 44页码:24-35 |
| 关键词 | Early Eocene Climate classification Aridity Asia |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2011.05.013 |
| 文献子类 | Article |
| 英文摘要 | Paleoenvironmental reconstructions illustrated that Asia was dominated by a zonal climate pattern in the Eocene epoch, with an almost latitudinal arid/semiarid band extending from the eastern coast of China to Central Asia. However, the mechanism behind the formation of the broad zonal arid/semiarid region and the possible occurrence of a monsoonal system remains unclear for that period. Here, using a reconstructed land-sea distribution and topography of 50 Ma, we employed a global climate model to simulate the Early Eocene climate in China. A set of experiments with consideration to different topography, orbital parameters, vegetation, sea surface temperature and atmospheric CO2 concentration demonstrated that a large extent of arid/semi-arid region with annual precipitation less than 800 mm was distributed latitudinally between 20 degrees N and 40 degrees N paleolatitude in China. This arid region was controlled by desert (BWh) and steppe (BSh) climates (according to the Koppen climate classification systems). On the north of the zonal desert/steppe region, a Mediterranean-like climate occurred in Central Asia. These simulations agree well with the geological reconstructions of a zonal desert/steppe region and indicate that this pattern was primarily caused by subtropical high pressures associated with strong descending air. However, it is likely that the aridity in the zonal desert/steppe was reduced occasionally by intensification of monsoon circulations over East Asia. The change in orbital parameters, causing enhanced insolation in summer, was the most likely factor that could enlarge the land-sea thermal contrast and further intensify the monsoon circulations in the Eocene epoch, though its effect was reversible and impermanent. In addition, simulations show that East Asian monsoon did not play a leading role in Chinese Paleogene climate although it may have affected Eastern China occasionally. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS关键词 | GENERAL-CIRCULATION MODEL ; LAND-SEA DISTRIBUTION ; THERMAL MAXIMUM ; WORLD MAP ; OCEAN ; PLATEAU ; TEMPERATURES ; ATMOSPHERE ; EVOLUTION ; UPLIFT |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000300203200003 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China(40902054) ; National Natural Science Foundation of China(40902054) ; PALMORC II ; PALMORC II ; Statoil, Norway ; Statoil, Norway ; National Natural Science Foundation of China(40902054) ; National Natural Science Foundation of China(40902054) ; PALMORC II ; PALMORC II ; Statoil, Norway ; Statoil, Norway ; National Natural Science Foundation of China(40902054) ; National Natural Science Foundation of China(40902054) ; PALMORC II ; PALMORC II ; Statoil, Norway ; Statoil, Norway ; National Natural Science Foundation of China(40902054) ; National Natural Science Foundation of China(40902054) ; PALMORC II ; PALMORC II ; Statoil, Norway ; Statoil, Norway |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84122]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang, Zhongshi |
| 作者单位 | 1.UniRes AS, Bjerknes Ctr Climate Res, N-5006 Bergen, Norway 2.Chinese Acad Sci, Nansen Zhu Int Res Ctr, Inst Atmospher Phys, Beijing 100029, Peoples R China 3.Nansen Environm & Remote Sensing Ctr, N-5007 Bergen, Norway 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhongshi,Flatoy, Frode,Wang, Huijun,et al. Early Eocene Asian climate dominated by desert and steppe with limited monsoons[J]. JOURNAL OF ASIAN EARTH SCIENCES,2012,44:24-35. |
| APA | Zhang, Zhongshi,Flatoy, Frode,Wang, Huijun,Bethke, Ingo,Bentsen, Mats,&Guo, Zhengtang.(2012).Early Eocene Asian climate dominated by desert and steppe with limited monsoons.JOURNAL OF ASIAN EARTH SCIENCES,44,24-35. |
| MLA | Zhang, Zhongshi,et al."Early Eocene Asian climate dominated by desert and steppe with limited monsoons".JOURNAL OF ASIAN EARTH SCIENCES 44(2012):24-35. |
入库方式： OAI收割
来源：地质与地球物理研究所
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