Climate Change Data Portal
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-RATESOXYGENEVOLUTIONMODELBASINPROXYWATERLIFETHERMOMETRYSENSITIVITY |
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
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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). |
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