气候变化领域集成服务门户(CCPortal): Absolute seasonal temperature estimates from clumped isotopes in bivalve shells suggest warm and variable greenhouse climate

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DOI	10.1038/s43247-021-00193-9
	Absolute seasonal temperature estimates from clumped isotopes in bivalve shells suggest warm and variable greenhouse climate
	de Winter, Niels J.; Muller, Inigo A.; Kocken, Ilja J.; Thibault, Nicolas; Ullmann, Clemens, V; Farnsworth, Alex; Lunt, Daniel J.; Claeys, Philippe; Ziegler, Martin
通讯作者	de Winter, NJ (通讯作者)
发表日期	2021
EISSN	2662-4435
卷号	2 期号:1
英文摘要	Seasonal variability in sea surface temperatures plays a fundamental role in climate dynamics and species distribution. Seasonal bias can also severely compromise the accuracy of mean annual temperature reconstructions. It is therefore essential to better understand seasonal variability in climates of the past. Many reconstructions of climate in deep time neglect this issue and rely on controversial assumptions, such as estimates of sea water oxygen isotope composition. Here we present absolute seasonal temperature reconstructions based on clumped isotope measurements in bivalve shells which, critically, do not rely on these assumptions. We reconstruct highly precise monthly sea surface temperatures at around 50 degrees N latitude from individual oyster and rudist shells of the Campanian greenhouse period about 78 million years ago, when the seasonal range at 50 degrees N comprised 15 to 27 degrees C. In agreement with fully coupled climate model simulations, we find that greenhouse climates outside the tropics were warmer and more seasonal than previously thought. We conclude that seasonal bias and assumptions about seawater composition can distort temperature reconstructions and our understanding of past greenhouse climates.
关键词	GROWTH-RATES OXYGEN EVOLUTION MODEL BASIN PROXY WATER LIFE THERMOMETRY SENSITIVITY
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000663022100001
来源期刊	COMMUNICATIONS EARTH & ENVIRONMENT
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/260483
推荐引用方式 GB/T 7714	de Winter, Niels J.,Muller, Inigo A.,Kocken, Ilja J.,et al. Absolute seasonal temperature estimates from clumped isotopes in bivalve shells suggest warm and variable greenhouse climate[J]. 中国科学院青藏高原研究所,2021,2(1).
APA	de Winter, Niels J..,Muller, Inigo A..,Kocken, Ilja J..,Thibault, Nicolas.,Ullmann, Clemens, V.,...&Ziegler, Martin.(2021).Absolute seasonal temperature estimates from clumped isotopes in bivalve shells suggest warm and variable greenhouse climate.COMMUNICATIONS EARTH & ENVIRONMENT,2(1).
MLA	de Winter, Niels J.,et al."Absolute seasonal temperature estimates from clumped isotopes in bivalve shells suggest warm and variable greenhouse climate".COMMUNICATIONS EARTH & ENVIRONMENT 2.1(2021).