Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1714744115 |
Eocene greenhouse climate revealed by coupled clumped isotope-Mg/Ca thermometry | |
Evans, David1,16; Sagoo, Navjit1; Renema, Willem2; Cotton, Laura J.2,3,4; Muller, Wolfgang5,6; Todd, Jonathan A.7; Saraswati, Pratul Kumar8; Stassen, Peter9,10; Ziegler, Martin11; Pearson, Paul N.12; Valdes, Paul J.13,14; Affek, Hagit P.1,15 | |
2018-02-06 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:6页码:1174-1179 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Netherlands; Germany; England; India; Belgium; Wales; Israel; Scotland |
英文摘要 | Past greenhouse periods with elevated atmospheric CO2 were characterized by globally warmer sea-surface temperatures (SST). However, the extent to which the high latitudes warmed to a greater degree than the tropics (polar amplification) remains poorly constrained, in particular because there are only a few temperature reconstructions from the tropics. Consequently, the relationship between increased CO2, the degree of tropical warming, and the resulting latitudinal SST gradient is not well known. Here, we present coupled clumped isotope (Delta(47))-Mg/Ca measurements of foraminifera from a set of globally distributed sites in the tropics and midlatitudes. Delta(47) is insensitive to seawater chemistry and therefore provides a robust constraint on tropical SST. Crucially, coupling these data with Mg/Ca measurements allows the precise reconstruction of Mg/Ca-sw throughout the Eocene, enabling the reinterpretation of all planktonic foraminifera Mg/Ca data. The combined dataset constrains the range in Eocene tropical SST to 30-36 degrees C (from sites in all basins). We compare these accurate tropical SST to deep-ocean temperatures, serving as a minimum constraint on high-latitude SST. This results in a robust conservative reconstruction of the early Eocene latitudinal gradient, which was reduced by at least 32 +/- 10% compared with present day, demonstrating greater polar amplification than captured by most climate models. |
英文关键词 | clumped isotope Eocene tropical sea-surface temperatures polar amplification seawater Mg/Ca |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000424191300040 |
WOS关键词 | LARGE BENTHIC FORAMINIFERA ; SEA-SURFACE TEMPERATURES ; THERMAL MAXIMUM ; OCEAN CIRCULATION ; SEAWATER MG/CA ; MODEL ; WARM ; CHEMISTRY ; PACIFIC ; RECORD |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205042 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Yale Univ, Dept Geol & Geophys, POB 6666, New Haven, CT 06511 USA; 2.Nat Biodivers Ctr, NL-2300 RA Leiden, Netherlands; 3.Univ Florida, Florida Museum Nat Hist, Gainesville, FL 32611 USA; 4.Univ Florida, Dept Geosci, Gainesville, FL 32611 USA; 5.Goethe Univ Frankfurt, Inst Geosci, D-60438 Frankfurt, Germany; 6.Royal Holloway Univ London, Dept Earth Sci, Egham TW20 0EX, Surrey, England; 7.Nat Hist Museum, Dept Earth Sci, London SW7 5BD, England; 8.Indian Inst Technol, Dept Earth Sci, Bombay 400076, Maharashtra, India; 9.Katholieke Univ Leuven, Dept Earth & Environm Sci, B-3000 Leuven, Belgium; 10.Royal Belgian Inst Nat Sci, B-1000 Brussels, Belgium; 11.Univ Utrecht, Dept Earth Sci, NL-3584 CS Utrecht, Netherlands; 12.Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales; 13.Univ Bristol, Cabot Inst, Bristol BS8 1UJ, Avon, England; 14.Univ Bristol, Sch Geog Sci, Bristol BS8 1SS, Avon, England; 15.Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel; 16.Univ St Andrews, Sch Earth & Environm Sci, St Andrews KY16 9AL, Fife, Scotland |
推荐引用方式 GB/T 7714 | Evans, David,Sagoo, Navjit,Renema, Willem,et al. Eocene greenhouse climate revealed by coupled clumped isotope-Mg/Ca thermometry[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(6):1174-1179. |
APA | Evans, David.,Sagoo, Navjit.,Renema, Willem.,Cotton, Laura J..,Muller, Wolfgang.,...&Affek, Hagit P..(2018).Eocene greenhouse climate revealed by coupled clumped isotope-Mg/Ca thermometry.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(6),1174-1179. |
MLA | Evans, David,et al."Eocene greenhouse climate revealed by coupled clumped isotope-Mg/Ca thermometry".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.6(2018):1174-1179. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论