Record Details
A record of atmospheric CO₂ during the last 40,000 years from the Siple Dome, Antarctica ice core
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | A record of atmospheric CO₂ during the last 40,000 years from the Siple Dome, Antarctica ice core |
| Names |
Ahn, Jinho
(creator) Wahlen, Martin (creator) Deck, Bruce L. (creator) Brook, Ed J. (creator) Mayewski, Paul A. (creator) Taylor, Kendrick C. (creator) White, James W. C. (creator) |
| Date Issued | 2004 (iso8601) |
| Note | This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/jgr/. |
| Abstract | We have measured the CO₂ concentration of air occluded during the last 40,000 years in the deep Siple Dome A (hereafter Siple Dome) ice core, Antarctica. The general trend of CO₂ concentration from Siple Dome ice follows the temperature inferred from the isotopic composition of the ice and is mostly in agreement with other Antarctic ice core CO₂ records. CO₂ rose initially at ~17.5 kyr B.P. (thousand years before 1950), decreased slowly during the Antarctic Cold Reversal, rose during the Younger Dryas, fell to a local minimum at around 8 kyr B.P., and rose continuously since then. The CO₂ concentration never reached steady state during the Holocene, as also found in the Taylor Dome and EPICA Dome C (hereafter Dome C) records. During the last glacial termination, a lag of CO₂ versus Siple Dome isotopic temperature is probable. The Siple Dome CO₂ concentrations during the last glacial termination and in the Holocene are at certain times greater than in other Antarctic ice cores by up to 20 ppm (μmol CO₂/mol air). While in situ production of CO₂ is one possible cause of the sporadic elevated levels, the mechanism leading to the enrichment is not yet clear. |
| Genre | Article |
| Topic | CO₂ |
| Identifier | Ahn, J., M. Wahlen, B. L. Deck, E. J. Brook, P. A. Mayewski, K. C. Taylor, and J. W. C. White (2004), A record of atmospheric CO2 during the last 40,000 years from the Siple Dome, Antarctica ice core, Journal of Geophysical Research, 109, D13305, doi:10.1029/2003JD004415. |
