| 查看: 743 | 回复: 1 | ||
gy_xmc2015铜虫 (小有名气)
|
[交流]
刘晓东关于青藏高原的研究综述
|
|
Where were the monsoon regions and arid zones in Asia prior to the Tibetan Plateau uplift? Xiaodong Liu, Qingchun Guo, Zhengtang Guo, Zhi-Yong Yin, Buwen Dong and Robin Smith6 http://nsr.oxfordjournals.org/content/2/4/403.full ABSTRACT The impact of the Tibetan Plateau uplift on the Asian monsoons and inland arid climates is an important but also controversial question in studies of paleoenvironmental change during the Cenozoic. In order to achieve a good understanding of the background for the formation of the Asian monsoons and arid environments, it is necessary to know the characteristics of the distribution of monsoon regions and arid zones in Asia before the plateau uplift. In this study, we discuss in detail the patterns of distribution of the Asian monsoon and arid regions before the plateau uplift on the basis of modeling results without topography from a global coupled atmosphere–ocean general circulation model, compare our results with previous simulation studies and available biogeological data, and review the uncertainties in the current knowledge. Based on what we know at the moment, tropical monsoon climates existed south of 20◦N in South and Southeast Asia before the plateau uplift, while the East Asian monsoon was entirely absent in the extratropics. These tropical monsoons mainly resulted from the seasonal shifts of the Inter-Tropical Convergence Zone.There may have been a quasi-monsoon region in central-southern Siberia. Most of the arid regions in the Asian continent were limited to the latitudes of 20–40◦N, corresponding to the range of the subtropical high pressure year-around. In the meantime, the present-day arid regions located in the relatively high latitudes in Central Asia were most likely absent before the plateau uplift. The main results from the above modeling analyses are qualitatively consistent with the available biogeological data. These results highlight the importance of the uplift of the Tibetan Plateau in the Cenozoic evolution of the Asian climate pattern of dry–wet conditions. Future studies should be focused on effects of the changes in land–sea distribution and atmospheric CO2 concentrations before and after the plateau uplift, and also on cross-comparisons between numerical simulations and geological evidence, so that a comprehensive understanding of the evolution of the Cenozoic paleoenvironments in Asia can be achieved. Keywords: the Tibetan Plateau, uplift, the Asian monsoons |
回复此楼
gy_xmc2015
铜虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 158
- 散金: 20
- 红花: 23
- 帖子: 163
- 在线: 42.4小时
- 虫号: 4236684
- 注册: 2015-11-21
- 专业: 膜生物化学与膜生物物理学
文章全文PDF |
» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : Natl_Sci_Rev-2015-Liu-403-16.pdf
2016-11-22 13:11:40, 2.58 M
2楼2016-11-22 13:11:42
20