Abrupt Change in Atmospheric CO2 During the Last Ice Age

During the last glacial period atmospheric carbon dioxide and temperature in Antarctica varied in a similar fashion on millennial time scales, but previous work indicates that these changes were gradual. In a detailed analysis of one event, we now find that approximately half of the CO2 increase tha...

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Bibliographic Details
Main Authors: Ahn, Jinho, Brook, Edward J.
Format: Dataset
Language:unknown
Published: IEDA: US Antarctic Program Data Center 2013
Subjects:
Taylor Dome Ice Core
Arctic
Siple Dome Ice Core
GISP2
Taylor Dome
Ice Core Records
Glaciers/ice Sheet
CO2
Methane
Glaciology
Chemistry:fluid
Paleoclimate
Geochemistry
Antarctica
Byrd
Antarctic
Siple
Siple Dome
Antarc*
ice core
Ice Sheet
Online Access:https://search.dataone.org/view/sha256:e561891b4e6d1271d431931c5892d30bab550162962ae5a98a0aa978090467e1
Description
Summary:During the last glacial period atmospheric carbon dioxide and temperature in Antarctica varied in a similar fashion on millennial time scales, but previous work indicates that these changes were gradual. In a detailed analysis of one event, we now find that approximately half of the CO2 increase that occurred during the 1500 year cold period between Dansgaard-Oeschger (DO) Events 8 and 9 happened rapidly, over less than two centuries. This rise in CO2 was synchronous with, or slightly later than, a rapid increase of Antarctic temperature inferred from stable isotopes.

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