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DOI | 10.1016/j.quascirev.2017.10.036 |
Contrasting early Holocene temperature variations between monsoonal East Asia and westerly dominated Central Asia | |
Zhao, Jiaju; An, Chen-Bang; Huang, Yongsong; Morrill, Carrie; Chen, Fa-Hu | |
发表日期 | 2017 |
ISSN | 0277-3791 |
卷号 | 178页码:14-23 |
英文摘要 | Numerous studies have demonstrated that there are major differences in the timing of maximum Holocene precipitation between the monsoonal East Asia and westerly dominated Central Asia, but it is unclear if the moisture differences are also associated with corresponding temperature contrasts. Here we present the first alkenone-based paleotemperature reconstructions for the past 21 kyr from Lake Balikun, central Asia. We show, unlike the initiation of Holocene warm conditions at similar to 11 kyr BP in the monsoon regions, the arid central Asia remained in a glacial-like cold condition prior to 8 kyr BP and experienced abrupt warming of similar to 9 degrees C after the collapse of the Laurentide ice sheet. Comparison with pollen and other geochemical data indicates the abrupt warming is closely associated with major increase in the moisture supply to the region. Together, our multiproxy data indicate-2 thousand years delay of temperature and moisture optimum relative to local summer insolation maximum, suggesting major influence of the Laurentide ice sheet and other high latitude ice sheet forcings on the regional atmospheric circulation. In addition, our data reveal a temperature drop by similar to 4 degrees C around 4 kyr BP lasting multiple centuries, coinciding with severe increases in aridity previously reported based on multiproxy data. In contrast, model simulations display a much less pronounced delay in the initiation of Holocene warm conditions, raising unresolved questions about the relative importance of local radiative forcing and high -latitude ice on temperature in this region. (C) 2017 Elsevier Ltd. All rights reserved. |
英文关键词 | Paleotemperature reconstructions;Alkenone;Central Asia;Lake Balikun |
语种 | 英语 |
WOS研究方向 | Physical Geography ; Geology |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000418974100002 |
来源期刊 | QUATERNARY SCIENCE REVIEWS |
来源机构 | 兰州大学 ; 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/1747 |
推荐引用方式 GB/T 7714 | Zhao, Jiaju,An, Chen-Bang,Huang, Yongsong,et al. Contrasting early Holocene temperature variations between monsoonal East Asia and westerly dominated Central Asia[J]. 兰州大学, 中国科学院青藏高原研究所,2017,178:14-23. |
APA | Zhao, Jiaju,An, Chen-Bang,Huang, Yongsong,Morrill, Carrie,&Chen, Fa-Hu.(2017).Contrasting early Holocene temperature variations between monsoonal East Asia and westerly dominated Central Asia.QUATERNARY SCIENCE REVIEWS,178,14-23. |
MLA | Zhao, Jiaju,et al."Contrasting early Holocene temperature variations between monsoonal East Asia and westerly dominated Central Asia".QUATERNARY SCIENCE REVIEWS 178(2017):14-23. |
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