The Atmosphere During the Younger Dryas

One of the most dramatic climate change events observed in marine and ice core records is the Younger Dryas, a return to near-glacial conditions that punctuated the last deglaciation. High-resolution, continuous glaciochemical records, newly retrieved from central Greenland, record the chemical comp...

Full description

Bibliographic Details
Published in:Science
Main Authors: Mayewski, Paul A., Meeker, David, Whitlow, Sallie I., Twickler, Mark S., Morrison, Michael C., Alley, R. B., Bloomfield, P., Taylor, Kendrick C.
Format: Text
Language:unknown
Published: University of New Hampshire Scholars' Repository 1993
Subjects:
Arctic
Greenland
Climate change
ice core
Online Access:https://scholars.unh.edu/faculty_pubs/371
https://doi.org/10.1126/science.261.5118.195
Description
Summary:One of the most dramatic climate change events observed in marine and ice core records is the Younger Dryas, a return to near-glacial conditions that punctuated the last deglaciation. High-resolution, continuous glaciochemical records, newly retrieved from central Greenland, record the chemical composition of the arctic atmosphere at this time. This record shows that both the onset and the termination of the Younger Dryas occurred within 10 to 20 years and that massive, frequent, and short-term (decadal or less) changes in atmospheric composition occurred throughout this event. Changes in atmospheric composition are attributable to changes in the size of the polar atmospheric cell and resultant changes in source regions and to the growth and decay of continental biogenic source regions.

Similar Items