Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica

by S S Assonov, C a M Brenninkmeijer, P J Jockel, R Mulvaney, S Bernard, J Chappellaz
Atmospheric Chemistry and Physics ()


Trends of carbon monoxide CO) for the past 100 years are reported as derived from Antarctic firn drilling expeditions. Only one of 3 campaigns provided high quality results. The trend was reconstructed using a firn air model in the forward mode to constrain age distributions and assuming the CO increase to be proportional to its major source, namely CH4. The results suggest that CO has increased by similar to 38%, from 38 7 to 52.5 1.5 ppbv over a period of roughly 100 years. The concentrations are on the volumetric scale which corresponds to similar to 1.08 of the scale used by NOAA/CMDL. The estimated CO increase is somewhat larger than what is estimated from the CO budget estimations and the CH4 growth alone. The most likely explanation might be an increase in biomass burning emissions. Using CH3Cl as another proxy produces a very similar reconstruction.

Cite this document (BETA)

Page 1
Page 2

Readership Statistics

16 Readers on Mendeley
by Discipline
by Academic Status
44% Ph.D. Student
25% Researcher (at an Academic Institution)
19% Post Doc
by Country
6% France
6% United Kingdom

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in