干旱区生态环境知识资源中心(Arid): Hydroclimatic changes on multiple timescales since 7800 y BP in the winter precipitation-dominated Central Asia

Arid

DOI	10.1073/pnas.2321645121
	Hydroclimatic changes on multiple timescales since 7800 y BP in the winter precipitation-dominated Central Asia
	Tan, Liangcheng; Cheng, Hai; Li, Dong; Orozbaev, Rustam; Li, Yanzhen; Xu, Hai; Edwards, R. Lawrence; Song, Yougui; Ma, Le; Lin, Fangyuan; Sinha, Ashish; An, Zhisheng
通讯作者	Tan, LC ; An, ZS
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
EISSN	1091-6490
出版年	2024
卷号	121 期号:14
英文摘要	Central Asia (CA) is one of the world's most significant arid regions, which is markedly impacted by global warming. A better understanding of the dynamical processes governing its Holocene climate variability is critical for a better understanding of possible future impacts of climate change in the region. To date, most of the existing CA paleoclimate records are from the summer precipitation-dominated eastern CA (ECA), with few records from the winter precipitation-dominated western CA (WCA). Here, we present a precisely dated (similar to 6 parts per thousand) and highly resolved (<4-y) record of hydroclimatic variations from the WCA covering the period between 7,774 and 656 y BP. Utilizing multiple proxies (delta O-18, delta C-13, and Sr/Ca) derived from a stalagmite from the Fergana Valley, Kyrgyzstan, we reveal a long-term drying trend in WCA, which is in contrast with the wetting trend in ECA. We propose that different responses of winter and summer westerly jets to seasonal solar insolation over the past 8,000 y may have resulted in an antiphased precipitation relationship between the WCA and ECA. Our data contain dominant quasiperiodicities of 1,400, 50 to 70, and 20 to 30 y, indicating close connections between the WCA climate and the North Atlantic. We further identified a series of droughts and pluvials on centennial-to-decadal timescales, which may have influenced regional societies and trans-Eurasian culture exchanges during historical and prehistorical times.
英文关键词	westerlies stalagmite Holocene winter insolation Central Asia
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001207675200001
WOS关键词	ARID CENTRAL-ASIA ; NORTH-ATLANTIC CLIMATE ; CENTRAL TIAN-SHAN ; HOLOCENE CLIMATE ; ALTAI MOUNTAINS ; HIGH-RESOLUTION ; VARIABILITY ; SPELEOTHEMS ; MOISTURE ; CAVE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405228
推荐引用方式 GB/T 7714	Tan, Liangcheng,Cheng, Hai,Li, Dong,et al. Hydroclimatic changes on multiple timescales since 7800 y BP in the winter precipitation-dominated Central Asia[J],2024,121(14).
APA	Tan, Liangcheng.,Cheng, Hai.,Li, Dong.,Orozbaev, Rustam.,Li, Yanzhen.,...&An, Zhisheng.(2024).Hydroclimatic changes on multiple timescales since 7800 y BP in the winter precipitation-dominated Central Asia.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(14).
MLA	Tan, Liangcheng,et al."Hydroclimatic changes on multiple timescales since 7800 y BP in the winter precipitation-dominated Central Asia".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.14(2024).