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Abrupt Climate Change: Mechanisms, Patterns, and Impacts



Abrupt Climate Change: Mechanisms, Patterns, and Impacts

Harunur Rashid (Editor), Leonid Polyak (Editor), Ellen Mosley-Thompson (Editor)

ISBN: 978-0-875-90484-9 January 2011 American Geophysical Union 242 Pages


Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 193.

Abrupt Climate Change: Mechanisms, Patterns, and Impacts
brings together a diverse group of paleoproxy records such as ice cores, marine sediments, terrestrial (lakes and speleothems) archives, and coupled ocean-atmosphere climate models to document recent advances in understanding the mechanisms of abrupt climate changes. Since the discovery of the Dansgaard-Oeschger events in Greenland ice cores and the subsequent discovery of their contemporary events in the marine sediments of the North Atlantic, the search for these abrupt, millennial-scale events across the globe has intensified, and as a result, the number of paleoclimatic records chronicling such events has increased. The volume highlights include discussions of records of past climate variability, meridional overturning circulation, land-ocean-atmosphere interactions, feedbacks in the climate system, and global temperature anomalies. Abrupt Climate Change will be of interest to students, researchers, academics, and policy makers who are concerned about abrupt climate change and its potential impact on society.
Harunur Rashid, Leonid Polyak, and Ellen Mosley-Thompson vii

Abrupt Climate Change Revisited
Harunur Rashid, Leonid Polyak, and Ellen Mosley-Thompson 1

A Review of Abrupt Climate Change Events in the Northeast Atlantic Ocean (Iberian Margin):
Latitudinal, Longitudinal, and Vertical Gradients
Antje H. L. Voelker and Lucia de Abreu 15

Laurentide Ice Sheet Meltwater and the Atlantic Meridional Overturning Circulation During the Last Glacial Cycle: A View From the Gulf of Mexico
B. P. Flower, C. Williams, H. W. Hill, and D. W. Hastings 39

Modeling Abrupt Climate Change as the Interaction Between Sea Ice Extent and Mean Ocean Temperature Under Orbital Insolation Forcing
J. A. Rial and R. Saha 57

Simulated Two-Stage Recovery of Atlantic Meridional Overturning Circulation During the Last Deglaciation
Jun Cheng, Zhengyu Liu, Feng He, Bette L. Otto-Bliesner, Esther C. Brady, and Mark Wehrenberg 75

The Role of Hudson Strait Outlet in Younger Dryas Sedimentation in the Labrador Sea
Harunur Rashid, David J. W. Piper, and Benjamin P. Flower 93

Challenges in the Use of Cosmogenic Exposure Dating of Moraine Boulders to Trace the Geographic Extents of Abrupt Climate Changes: The Younger Dryas Example
Patrick J. Applegate and Richard B. Alley 111

Hypothesized Link Between Glacial/Interglacial Atmospheric CO2 Cycles and Storage/Release
of CO2-Rich Fluids From Deep-Sea Sediments
Lowell Stott and Axel Timmermann 123

The Impact of the Final Lake Agassiz Flood Recorded in Northeast Newfoundland and Northern Scotian
Shelves Based on Century-Scale Palynological Data
Elisabeth Levac, C. F. M. Lewis, and A. A. L. Miller 139

The 1500 Year Quasiperiodicity During the Holocene
A. Ruzmaikin and J. Feynman 161

Abrupt Climate Changes During the Holocene Across North America From Pollen and Paleolimnological Records
Konrad Gajewski and Andre E. Viau 173

Abrupt Holocene Climatic Change in Northwestern India: Disappearance of the Sarasvati River
and the End of Vedic Civilization
B. S. Paliwal 185

Evidence for Climate Teleconnections Between Greenland and the Sierra Nevada of California
During the Holocene, Including the 8200 and 5200 Climate Events
Stephen F. Wathen 195

Abrupt Climate Change: A Paleoclimate Perspective From the World’s Highest Mountains
Lonnie G. Thompson 215

AGU Category

Index 235

Index 237