Recent Warming Reverses Long-Term Arctic Cooling

被引：526

作者：

Kaufman, Darrell S. ^{[1
]}

Schneider, David P. ^{[2
]}

McKay, Nicholas P. ^{[3
]}

Ammann, Caspar M. ^{[2
]}

Bradley, Raymond S. ^{[4
]}

Briffa, Keith R. ^{[5
]}

Miller, Gifford H. ^{[6
]}

Otto-Bliesner, Bette L. ^{[2
]}

Overpeck, Jonathan T. ^{[3
]}

Vinther, Bo M. ^{[7
]}

机构：

[1] No Arizona Univ, Sch Earth Sci & Environm Sustainabil, Flagstaff, AZ 86011 USA

[2] Natl Ctr Atmospher Res, Climate & Global Dynam Div, Boulder, CO 80305 USA

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

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

[5] Univ E Anglia, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England

[6] Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA

[7] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

来源：

SCIENCE | 2009年 / 325卷 / 5945期

基金：

美国国家科学基金会;

关键词：

CLIMATE-CHANGE; LOW-RESOLUTION; HOLOCENE;

D O I：

10.1126/science.1173983

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 temperature history of the first millennium C. E. is sparsely documented, especially in the Arctic. We present a synthesis of decadally resolved proxy temperature records from poleward of 60 degrees N covering the past 2000 years, which indicates that a pervasive cooling in progress 2000 years ago continued through the Middle Ages and into the Little Ice Age. A 2000-year transient climate simulation with the Community Climate System Model shows the same temperature sensitivity to changes in insolation as does our proxy reconstruction, supporting the inference that this long-term trend was caused by the steady orbitally driven reduction in summer insolation. The cooling trend was reversed during the 20th century, with four of the five warmest decades of our 2000-year-long reconstruction occurring between 1950 and 2000.

引用

页码：1236 / 1239

页数：4

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