Dataset Information
Abrupt Change in Atmospheric CO2 During the Last Ice Age
Data DOI:
Cite as
Brook, E. J., & Ahn, J. (2013) "Abrupt Change in Atmospheric CO2 During the Last Ice Age" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
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.
Brook, Edward J.; Ahn, Jinho
Date Created:
USAP-DC (current) - NSIDC (original)
Spatial Extent(s)
West: -148.82, East: -148.82, South: -81.66, North: -81.66
West: -119.83, East: -119.83, South: -80.01, North: -80.01
Temporal Extent(s)
Start: 2009-01-01 - End: 2012-12-31
  1. Brook, E. J., J. W. C. White, A. Schilla, M. Bender, B. Barnett, J. Severinghaus, K. Taylor, R. Alley, and E. Steig. 2005. Timing of Millennial-scale Climate Change at Siple Dome, West Antarctica, During the Last Glacial Period. Quaternary Science Reviews 24:1333-1343: doi:10.1016/j.quascirev.2005.02.002. (doi:10.1016/j.quascirev.2005.02.002)
  2. Mitchell, L.E., Brook, E.J., Sowers, T. and McConnell, J.R. 2011. Multidecadal variability of atmospheric methane, 1000-1800 C.E. Journal of Geophysical Research, 116(G02007). doi: 10.1029/2010JG001441. (doi:10.1029/2010JG001441)
  3. Ahn, J., Brook, E. and Howell, K. 2009. A high-precision method for measurement of paleoatmospheric CO2 in small polar ice samples. Journal of Glaciology, 55(191), p. 499-506. (doi:10.3189/002214309788816731)
  4. Ahn, J., and E. J. Brook. 2008. Atmospheric CO2 and Climate on Millennial Time Scales during the Last Glacial Period. Science, 322, 83 - 85, (doi:10.1126/science.1160832)
  5. Ahn, Jinho, Edward J. Brook, Andreas Schmittner, and Karl Kreutz. 2013. Abrupt Change in Atmospheric CO2 During the Last Ice Age. Geophysical Research Letters, 39, L18711, doi:10.1029/2012GL053018. (doi:10.1029/2012GL053018)
  6. Anderson, R. F., et al. 2009. Wind-driven Upwelling in the Southern Ocean and the Deglacial Rise in Atmospheric CO2. Science, 323, 1443-1448, doi:10.1126/science.1167441. (doi:10.1126/science.1167441)
  7. Bender, M., Todd Sowers, and V. Lipenkov. 1995. On the Concentrations of O2, N2, and Ar in Trapped Gases from Ice Cores. J. Geophys. Res., 100, 18,651-18,660, doi:10.1029/94JD02212. (doi:10.1029/94JD02212)
  8. Blunier, T., and E. J. Brook. 2001. Timing of Millennial-scale Climate Change in Antarctica and Greenland during the Last Glacial Period, Science, 291, 109-112, doi:10.1126/science.291.5501.109. (doi:10.1126/science.291.5501.109)
  9. Dlugokencky, E. J., et al. 2005. Conversion of NOAA Atmospheric Dry Air CH4 Mole Fractions to a Gravimetrically Prepared Standard Scale. J. Geophys. Res., 110, D18306, doi:10.1029/2005JD006035. (doi:10.1029/2005JD006035)
  10. EPICA Community Members. 2006. One-to-one Coupling of Glacial Climate Variability in Greenland and Antarctica, Nature, 444, 195–198, doi:10.1038/nature05301. (doi:10.1038/nature05301)
  11. Margari, V., et al. 2010. The Nature of Millennial-scale Climate Variability during the Past Two Glacial Periods. Nattional Geoscience, 3, 127-131, doi:10.1038/ngeo740. (doi:10.1038/ngeo740)
  12. Mayewski, P. A., et al. 2009. State of the Antarctic and Southern Ocean Climate System (SASOCS), Rev. Geophys., 47, RG1003, doi:10.1029/2007RG000231. (doi:10.1029/2007RG000231)
  13. Skinner, L. C., and H. Elderfield. 2007. Rapid Fluctuations in the Deep North Atlantic Heat Budget during the Last Glacial Period, Paleoceanography, 22, PA1205, doi:10.1029/2006PA001338. (doi:10.1029/2006PA001338)
  14. Sowers, Todd, M. Bender, D. Raynaud, and Y. S. Korotkevich. 1992. d15N of N2 in Air Trapped in Polar Ice: A Tracer of Gas Transport in the Firn and a Possible Constraint on Ice Age-gas Age Differences. J. Geophys. Res., 97, 15,683-15,697, doi:10.1029/92JD01297. (doi:10.1029/92JD01297)
  15. Stauffer, B. 2006. CO2 Studies. Encyclopedia of Quaternary Science, vol. 2, edited by S. A. Elias, pp. 1181-1189, Elsevier, Amsterdam.
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