Cold conditions in Antarctica during the Little Ice Age - Implications for abrupt climate change mechanisms

被引：97

作者：

Bertler, N. A. N. ^{[1
,4
]}

Mayewski, P. A. ^{[2
]}

Carter, L. ^{[3
]}

机构：

[1] Victoria Univ, Joint Antarctic Res Inst, Wellington 6012, New Zealand

[2] Univ Maine, Climate Change Inst, Orono, ME 04469 USA

[3] Victoria Univ, Antarctic Res Ctr, Wellington 6012, New Zealand

[4] GNS Sci, Wellington 6012, New Zealand

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 2011年 / 308卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Little Ice Age; Mediaeval Warm Period; abrupt climate change; sea-saw mechanism; Antarctica; Southern Ocean; MCMURDO DRY VALLEYS; DEUTERIUM EXCESS SIGNAL; MEDIEVAL WARM PERIOD; SOUTHERN-OCEAN; ATMOSPHERIC CIRCULATION; PAST MILLENNIUM; BOTTOM WATER; SEA REGION; LAW DOME; CORE;

D O I：

10.1016/j.epsl.2011.05.021

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Little Ice Age (LIA) is one of the most prominent climate shifts in the past 5000 yrs. It has been suggested that the LIA might be the most recent of the Dansgaard-Oeschger events, which are better known as abrupt, large scale climate oscillations during the last glacial period. If the case, then according to Broecker (2000a, 2000b) Antarctica should have warmed during the LIA, when the Northern Hemisphere was cold. Here we present new data from the Ross Sea, Antarctica, that indicates surface temperatures were similar to 2 degrees C colder during the LIA, with colder sea surface temperatures in the Southern Ocean and/or increased sea-ice extent, stronger katabatic winds, and decreased snow accumulation. Whilst we find there was large spatial and temporal variability, overall Antarctica was cooler and stormier during the LIA. Although temperatures have warmed since the termination of the LIA, atmospheric circulation strength has remained at the same, elevated level. We conclude, that the LIA was either caused by alternative forcings, or that the sea-saw mechanism operates differently during warm periods. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：41 / 51

页数：11

共 92 条

[1] Solar influence on climate during the past millennium: Results from transient simulations with the NCAR Climate System Model [J].

Ammann, Caspar M. ;

Joos, Fortunat ;

Schimel, David S. ;

Otto-Bliesner, Bette L. ;

Tomas, Robert A. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2007, 104 (10) :3713-3718

[2]

[Anonymous], J GEOPHYS RES

[3]

[Anonymous], ANN GLACIOL

[4]

[Anonymous], J GEOPHYS RES, DOI DOI 10.1029/96JC03365

[5]

[Anonymous], J GEOPHYS RES

[6]

[Anonymous], J GEOPHYS RES ATMOS

[7]

[Anonymous], 1988, LITTLE ICE AGE

[8] Freshening of the Adelie Land Bottom Water near 140°E -: art. no. L23601 [J].

Aoki, S ;

Rintoul, SR ;

Ushio, S ;

Watanabe, S ;

Bindoff, NL .

GEOPHYSICAL RESEARCH LETTERS, 2005, 32 (23) :1-4

[9] One-to-one coupling of glacial climate variability in Greenland and Antarctica [J].

Barbante, C. ;

Barnola, J. -M. ;

Becagli, S. ;

Beer, J. ;

Bigler, M. ;

Boutron, C. ;

Blunier, T. ;

Castellano, E. ;

Cattani, O. ;

Chappellaz, J. ;

Dahl-Jensen, D. ;

Debret, M. ;

Delmonte, B. ;

Dick, D. ;

Falourd, S. ;

Faria, S. ;

Federer, U. ;

Fischer, H. ;

Freitag, J. ;

Frenzel, A. ;

Fritzsche, D. ;

Fundel, F. ;

Gabrielli, P. ;

Gaspari, V. ;

Gersonde, R. ;

Graf, W. ;

Grigoriev, D. ;

Hamann, I. ;

Hansson, M. ;

Hoffmann, G. ;

Hutterli, M. A. ;

Huybrechts, P. ;

Isaksson, E. ;

Johnsen, S. ;

Jouzel, J. ;

Kaczmarska, M. ;

Karlin, T. ;

Kaufmann, P. ;

Kipfstuhl, S. ;

Kohno, M. ;

Lambert, F. ;

Lambrecht, Anja ;

Lambrecht, Astrid ;

Landais, A. ;

Lawer, G. ;

Leuenberger, M. ;

Littot, G. ;

Loulergue, L. ;

Luethi, D. ;

Maggi, V. .

NATURE, 2006, 444 (7116) :195-198

[10] Solar irradiance during the last 1200 years based on cosmogenic nuclides [J].

Bard, E ;

Raisbeck, G ;

Yiou, F ;

Jouzel, J .

TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY, 2000, 52 (03) :985-992

← 1 2 3 4 5 6 7 8 9 10 →