Abrupt climate change revisited

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doi: 10.1029/2011GM001139
Author(s): Rashid, Harunur; Polyak, Leonid; Mosley-Thompson, Ellen
Author Affiliation(s): Primary:
Byrd Polar Research Center, Columbus, OH, United States
Volume Title: Abrupt climate change; mechanisms, patterns, and impacts
Volume Author(s): Rashid, Harunur, editor; Polyak, Leonid; Mosley-Thompson, Ellen
Source: Geophysical Monograph, Vol.193, p.1-14; 2009 AGU Chapman conference on Abrupt climate change, Columbus, OH, June 15-19, 2009, edited by Harunur Rashid, Leonid Polyak and Ellen Mosley-Thompson. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0065-8448. ISBN: 978-1-118-67004-0 CODEN: GPMGAD
Note: In English. 90 refs.; illus., incl. sketch map
Summary: This geophysical monograph volume contains a collection of papers presented at the 2009 AGU Chapman Conference on Abrupt Climate Change. Paleoclimate records derived from ice cores, lakes, and marine sedimentary archives illustrate rapid changes in the atmosphere-cryosphere-ocean system. Several proxy records and two data-model comparison studies simulate Atlantic meridional overturning circulation during the last deglaciation and millennial-scale temperature oscillations during the last glacial cycle and thereby provide new perspectives on the mechanisms controlling abrupt climate changes. Two hypotheses are presented to explain deep Southern Ocean carbon storage, the rapid increase of the atmospheric carbon dioxide, and retreat of sea ice in the Antarctic Ocean during the last deglaciation. A synthesis of two Holocene climate events at approximately 5.2 ka and 4.2 ka highlights the potential of a rapid response to climate forcing in tropical systems through the hydrological cycle. Both events appear contemporaneous with the collapse of ancient civilizations in low-latitude regions where roughly half of Earth's population lives today.
Year of Publication: 2011
Key Words: 22 Environmental Geology; Carbon dioxide; Cenozoic; Climate change; Climate forcing; Global change; Holocene; Paleoclimatology; Quaternary; Southern Ocean; World ocean
Record ID: 2012037464
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.

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