气候变化领域集成服务门户(CCPortal): Summer warming during Heinrich Stadial 1 in Northeast China

CCPortal

DOI	10.1130/G51881.1
	Summer warming during Heinrich Stadial 1 in Northeast China
	Zhu, Zeyang; Wu, Jing; Chu, Guoqiang; Rioual, Patrick; Lu, Jiaxin; Wang, Luo; Liu, Jiaqi
发表日期	2024
ISSN	0091-7613
EISSN	1943-2682
英文摘要	The last deglaciation is considered a key period for exploring the underlying dynamics of temperature changes because it was characterized by multiple millennial-scale abrupt climatic events. However, the limited number of quantitative temperature records in Northeast (NE) China covering the last deglaciation hampers a complete understanding of the mechanisms and processes behind the temperature changes that occurred in that region. Here, we present a quantitative reconstruction of summer temperature over the last deglaciation based on bacterial branched glycerol dialkyl glycerol tetraethers (brGDGTs) analyzed from the sediment sequence of Lake Kielguo, a small volcanic lake in NE China. The results show that summer temperature was lowest during the interval ca. 20-18.2 calibrated (cal.) k.y. B.P. with a value of similar to 11.1 degrees C and increased by similar to 1.9 degrees C during Heinrich Stadial 1 (HS1) and by similar to 2.7 degrees C during the transition to the Bolling-Allerod (B-A). The summer temperatures during the B-A warm interval and Younger Dryas cold interval were similar to 14.1 degrees C and similar to 12.0 degrees C, respectively. The summer temperature record from the Lake Kielguo sediment sequence indicates that summer warming dominated the climate change state during HS1 in East Asia, which is different from the cooling pattern controlled by winter temperatures in the North Atlantic and Greenland realms. This distinction can be explained by weakened winter cooling signals triggered by the collapse of Atlantic Meridional Overturning Circulation when these signals propagated to East Asia, and increased summer temperature warming controlled by orbital and greenhouse gases during HS1 in East Asia.
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:001173863100001
来源期刊	GEOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300774
作者单位	Chinese Academy of Sciences; Institute of Geology & Geophysics, CAS; Chinese Academy of Sciences; Shanxi Datong University
推荐引用方式 GB/T 7714	Zhu, Zeyang,Wu, Jing,Chu, Guoqiang,et al. Summer warming during Heinrich Stadial 1 in Northeast China[J],2024.
APA	Zhu, Zeyang.,Wu, Jing.,Chu, Guoqiang.,Rioual, Patrick.,Lu, Jiaxin.,...&Liu, Jiaqi.(2024).Summer warming during Heinrich Stadial 1 in Northeast China.GEOLOGY.
MLA	Zhu, Zeyang,et al."Summer warming during Heinrich Stadial 1 in Northeast China".GEOLOGY (2024).