气候变化领域集成服务门户(CCPortal): Impact of global cooling on Early Cretaceous high pCO(2) world during the Weissert Event

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DOI	10.1038/s41467-021-25706-0
	Impact of global cooling on Early Cretaceous high pCO(2) world during the Weissert Event
	Cavalheiro, Liyenne; Wagner, Thomas; Steinig, Sebastian; Bottini, Cinzia; Dummann, Wolf; Esegbue, Onoriode; Gambacorta, Gabriele; Giraldo-Gomez, Victor; Farnsworth, Alexander; Floegel, Sascha; Hofmann, Peter; Lunt, Daniel J.; Rethemeyer, Janet; Torricelli, Stefano; Erba, Elisabetta
通讯作者	Wagner, T (通讯作者)
发表日期	2021
EISSN	2041-1723
卷号	12 期号:1
英文摘要	The Weissert Event similar to 133 million years ago marked a profound global cooling that punctuated the Early Cretaceous greenhouse. We present modelling, high-resolution bulk organic carbon isotopes and chronostratigraphically calibrated sea surface temperature (SSTs) based on an organic paleothermometer (the TEX86 proxy), which capture the Weissert Event in the semi-enclosed Weddell Sea basin, offshore Antarctica (paleolatitude similar to 54 degrees S; paleowater depth similar to 500 meters). We document a similar to 3-4 degrees C drop in SST coinciding with the Weissert cold end, and converge the Weddell Sea data, climate simulations and available worldwide multi-proxy based temperature data towards one unifying solution providing a best-fit between all lines of evidence. The outcome confirms a 3.0 degrees C (+/- 1.7 degrees C) global mean surface cooling across the Weissert Event, which translates into a similar to 40% drop in atmospheric pCO(2) over a period of similar to 700 thousand years. Consistent with geologic evidence, this pCO(2) drop favoured the potential build-up of local polar ice.
关键词	SEA-SURFACE TEMPERATURES ISOPRENOID TETRAETHER LIPIDS NORTHERN-HEMISPHERE CLIMATE SENSITIVITY TEX86 CARBON CO2 CALIBRATION VOLCANISM EVOLUTION
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000700373400007
来源期刊	NATURE COMMUNICATIONS
来源机构	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/260534
推荐引用方式 GB/T 7714	Cavalheiro, Liyenne,Wagner, Thomas,Steinig, Sebastian,et al. Impact of global cooling on Early Cretaceous high pCO(2) world during the Weissert Event[J]. 中国科学院青藏高原研究所,2021,12(1).
APA	Cavalheiro, Liyenne.,Wagner, Thomas.,Steinig, Sebastian.,Bottini, Cinzia.,Dummann, Wolf.,...&Erba, Elisabetta.(2021).Impact of global cooling on Early Cretaceous high pCO(2) world during the Weissert Event.NATURE COMMUNICATIONS,12(1).
MLA	Cavalheiro, Liyenne,et al."Impact of global cooling on Early Cretaceous high pCO(2) world during the Weissert Event".NATURE COMMUNICATIONS 12.1(2021).