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Abrupt change in atmospheric CO 2 during the last ice age
Author(s) -
Ahn Jinho,
Brook Edward J.,
Schmittner Andreas,
Kreutz Karl
Publication year - 2012
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2012gl053018
Subject(s) - carbon dioxide in earth's atmosphere , glacial period , period (music) , ice core , carbon dioxide , climatology , geology , atmospheric sciences , ice age , atmospheric temperature , environmental science , climate change , oceanography , chemistry , geomorphology , physics , organic chemistry , acoustics
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 CO 2 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 CO 2 was synchronous with, or slightly later than, a rapid increase of Antarctic temperature inferred from stable isotopes.