2.8 Million Years of Arctic Climate Change from Lake El'gygytgyn, NE Russia

被引：363

作者：

Melles, Martin ^{[1
]}

Brigham-Grette, Julie ^{[2
]}

Minyuk, Pavel S. ^{[3
]}

Nowaczyk, Norbert R. ^{[4
]}

Wennrich, Volker ^{[1
]}

DeConto, Robert M. ^{[2
]}

Anderson, Patricia M. ^{[5
]}

Andreev, Andrei A. ^{[1
]}

Coletti, Anthony ^{[2
]}

Cook, Timothy L. ^{[2
]}

Haltia-Hovi, Eeva ^{[4
]}

Kukkonen, Maaret ^{[1
]}

Lozhkin, Anatoli V. ^{[3
]}

Rosen, Peter ^{[6
]}

Tarasov, Pavel ^{[7
]}

Vogel, Hendrik ^{[1
]}

Wagner, Bernd ^{[1
]}

机构：

[1] Univ Cologne, Inst Geol & Mineral, D-50674 Cologne, Germany

[2] Univ Massachusetts, Dept Geosci, Amherst, MA 01003 USA

[3] Russian Acad Sci, NE Interdisciplinary Sci Res Inst, Far E Branch, Magadan 685000, Russia

[4] GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany

[5] Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA

[6] Umea Univ, Climate Impacts Res Ctr, SE-98107 Abisko, Sweden

[7] Free Univ Berlin, Inst Geol Sci, D-12249 Berlin, Germany

来源：

SCIENCE | 2012年 / 337卷 / 6092期

基金：

美国国家科学基金会; 俄罗斯基础研究基金会; 瑞典研究理事会;

关键词：

ANTARCTIC ICE-SHEET; LATE PLIOCENE; PLEISTOCENE; PACIFIC; QUATERNARY; VARIABILITY; GREENLAND; RECORD; VEGETATION; RESOLUTION;

D O I：

10.1126/science.1222135

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：

The reliability of Arctic climate predictions is currently hampered by insufficient knowledge of natural climate variability in the past. A sediment core from Lake El'gygytgyn in northeastern (NE) Russia provides a continuous, high-resolution record from the Arctic, spanning the past 2.8 million years. This core reveals numerous "super interglacials" during the Quaternary; for marine benthic isotope stages (MIS) 11c and 31, maximum summer temperatures and annual precipitation values are similar to 4 degrees to 5 degrees C and similar to 300 millimeters higher than those of MIS 1 and 5e. Climate simulations show that these extreme warm conditions are difficult to explain with greenhouse gas and astronomical forcing alone, implying the importance of amplifying feedbacks and far field influences. The timing of Arctic warming relative to West Antarctic Ice Sheet retreats implies strong interhemispheric climate connectivity.

引用

页码：315 / 320

页数：6

共 56 条

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