Near-Synchronous Interhemispheric Termination of the Last Glacial Maximum in Mid-Latitudes-Reference-Cited by-同舟云学术

Near-Synchronous Interhemispheric Termination of the Last Glacial Maximum in Mid-Latitudes

Published:2006-06-09 Issue:5779 Volume:312 Page:1510-1513
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Schaefer Joerg M.¹²³⁴⁵,Denton George H.¹²³⁴⁵,Barrell David J. A.¹²³⁴⁵,Ivy-Ochs Susan¹²³⁴⁵,Kubik Peter W.¹²³⁴⁵,Andersen Bjorn G.¹²³⁴⁵,Phillips Fred M.¹²³⁴⁵,Lowell Thomas V.¹²³⁴⁵,Schlüchter Christian¹²³⁴⁵

Affiliation:

1. Lamont-Doherty Earth Observatory (L-DEO), Palisades, NY 10964, USA.

2. Department of Earth Sciences and Climate Change Institute, University of Maine, Orono, ME 04469, USA.

3. GNS Science, Dunedin, New Zealand.

4. Institute of Particle Physics, Eidgenössiche Technische Hochschule (ETH) Hoenggerberg, 8093 Zürich, Switzerland.

5. Geographisches Institut, Universität Zürich-Irchel, CH-8057 Zürich, Switzerland.

Abstract

Isotopic records from polar ice cores imply globally asynchronous warming at the end of the last glaciation. However, 10 Be exposure dates show that large-scale retreat of mid-latitude Last Glacial Maximum glaciers commenced at about the same time in both hemispheres. The timing of retreat is consistent with the onset of temperature and atmospheric CO 2 increases in Antarctic ice cores. We suggest that a global trend of rising summer temperatures at the end of the Last Glacial Maximum was obscured in North Atlantic regions by hypercold winters associated with unusually extensive winter sea ice.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference35 articles.

1. W. S. Broecker, J. van Donk, Rev. Geophys. Space Phys.8, 169 (1970).

2. Because of the use of different age models the onset of the last termination in Antarctic ice cores has been assigned ages of about 19 ky for Byrd [Greenland Ice Sheet Project (GISP) 2 chronology] ( 3 ) 18 ky for the Byrd core [Greenland Ice Core Project (GRIP) chronology] ( 4 ) 17.5 ky for European Project for Ice Coring in Antarctica (EPICA) Dome C (EDC1 time scale) ( 5 ) and 17 ky for Vostok (GT4 time scale) ( 6 ).

3. Timing of Millennial-Scale Climate Change in Antarctica and Greenland During the Last Glacial Period

4. Asynchrony of Antarctic and Greenland climate change during the last glacial period

5. A new 27 ky high resolution East Antarctic climate record

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