A 485-million-year history of Earth's surface temperature

被引：15

作者：

Judd, Emily J. ^{[1
,2
]}

Tierney, Jessica E. ^{[2
]}

Lunt, Daniel J. ^{[3
]}

Montanez, Isabel P. ^{[4
]}

Huber, Brian T. ^{[1
]}

Wing, Scott L. ^{[1
]}

Valdes, Paul J. ^{[3
,5
]}

机构：

[1] Smithsonian Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20560 USA

[2] Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA

[3] Univ Bristol, Sch Geog Sci, Bristol BS8 1SS, England

[4] Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA

[5] Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Environm, Beijing 100101, Peoples R China

来源：

SCIENCE | 2024年 / 385卷 / 6715期

关键词：

SEAWATER CARBONATE CONCENTRATION; OXYGEN ISOTOPIC COMPOSITION; EOCENE THERMAL MAXIMUM; CLIMATIC OPTIMUM EECO; SENSITIVITY; CALIBRATION; RECORD; MODEL; PROXY; DELTA-O-18;

D O I：

10.1126/science.adk3705

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A long-term record of global mean surface temperature (GMST) provides critical insight into the dynamical limits of Earth's climate and the complex feedbacks between temperature and the broader Earth system. Here, we present PhanDA, a reconstruction of GMST over the past 485 million years, generated by statistically integrating proxy data with climate model simulations. PhanDA exhibits a large range of GMST, spanning 11 degrees to 36 degrees C. Partitioning the reconstruction into climate states indicates that more time was spent in warmer rather than colder climates and reveals consistent latitudinal temperature gradients within each state. There is a strong correlation between atmospheric carbon dioxide (CO2) concentrations and GMST, identifying CO2 as the dominant control on variations in Phanerozoic global climate and suggesting an apparent Earth system sensitivity of similar to 8 degrees C.

引用

页数：9

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