NIGPAS OpenIR
Spatially diverse hydroclimatic response to the 4.2 ka event in the Asian monsoon region
Lin, Jie1,2; Jiang, Wenying1; Wang, Luo1; Zhang, Enlou3; Tang, Lingyu4; Yang, Xiaoxiao1,5; Chu, Guoqiang1; Yang, Shiling1,2; Xiao, Jule1,2
2022-11-15
发表期刊QUATERNARY SCIENCE REVIEWS
ISSN0277-3791
卷号296页码:11
摘要

The 4.2 ka event was a widespread abrupt cooling event in the Northern Hemisphere. However, there was a spatially inconsistent hydroclimatic response to the 4.2 ka event in the Asian monsoon region. To further characterize and to determine the origin of this phenomenon, we present a pollen record spanning the interval from 10.7 ka to the present from a subalpine lake in the Hengduan Mountains, southwestern China, which are climatically influenced by the Indian monsoon; and we then reconstruct the spatial pattern of the hydroclimatic response to the 4.2 ka event across the Asian monsoon region, based on a synthesis of our own and previously published data. The results reveal the following. (i) During the interval of 4.5-3.9 ka (spanning the 4.2 ka event) in the subtropical mountains there were abrupt decreases in evergreen broadleaved trees, including evergreen Quercus, Castanopsis and Cyclo-balanopsis. (ii) The hydroclimatic response to the 4.2 ka event across the Asian monsoon region was characterized by a tripolar precipitation pattern, with decreased rainfall over India and southwestern and northern China, and increased rainfall over central China. Therefore, we conclude that the hydroclimatic response to the 4.2 ka event in the Asian monsoon region was spatially heterogenous, which we argue was related to the slowdown of the Atlantic Meridional Overturning Circulation (AMOC). During the interval of 4.5-3.9 ka, cooling at high latitudes of the Northern Hemisphere, caused by AMOC weak-ening, led to the southward movement of the Intertropical Convergence Zone (ITCZ), which resulted in decreased rainfall over most of the Asian monsoon region. The wet conditions in central China may have been modulated by the southward movement of the westerlies, which was also caused by the cooling at northern high latitudes. The southward displacement of the westerlies restricted the northward pene-tration of the monsoonal air flow, and thus the monsoon rainbelt stagnated over central China, where there was a corresponding increase in precipitation.(c) 2022 Elsevier Ltd. All rights reserved.

关键词The 4 2 ka event Holocene Southwestern China Pollen Asian monsoon Hydroclimate
DOI10.1016/j.quascirev.2022.107809
收录类别SCI
语种英语
关键词[WOS]LAST GLACIAL MAXIMUM ; NORTH-ATLANTIC CLIMATE ; HIGH-RESOLUTION ; SUMMER MONSOON ; INDIAN MONSOON ; YANGTZE-RIVER ; LONAR LAKE ; HOLOCENE RECORD ; CHINA ; STALAGMITE
资助项目National Natural Science Foundation of China[41931181] ; National Natural Science Foundation of China[41725010] ; National Key Research and Development Program of China[2020YFA0607703] ; Strategic Priority Research Program of Chinese Academy of Sciences (CAS)[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences (CAS)[XDB31000000] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-201905]
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000876497100004
项目资助者National Natural Science Foundation of China ; National Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences (CAS) ; Key Research Program of the Institute of Geology & Geophysics, CAS
出版者PERGAMON-ELSEVIER SCIENCE LTD
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/41387
专题中国科学院南京地质古生物研究所
通讯作者Jiang, Wenying
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China
4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
5.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714
Lin, Jie,Jiang, Wenying,Wang, Luo,et al. Spatially diverse hydroclimatic response to the 4.2 ka event in the Asian monsoon region[J]. QUATERNARY SCIENCE REVIEWS,2022,296:11.
APA Lin, Jie.,Jiang, Wenying.,Wang, Luo.,Zhang, Enlou.,Tang, Lingyu.,...&Xiao, Jule.(2022).Spatially diverse hydroclimatic response to the 4.2 ka event in the Asian monsoon region.QUATERNARY SCIENCE REVIEWS,296,11.
MLA Lin, Jie,et al."Spatially diverse hydroclimatic response to the 4.2 ka event in the Asian monsoon region".QUATERNARY SCIENCE REVIEWS 296(2022):11.
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