Articles | Volume 15, issue 5
Research article
09 Mar 2015
Research article |  | 09 Mar 2015

Variations in global methane sources and sinks during 1910–2010

A. Ghosh, P. K. Patra, K. Ishijima, T. Umezawa, A. Ito, D. M. Etheridge, S. Sugawara, K. Kawamura, J. B. Miller, E. J. Dlugokencky, P. B. Krummel, P. J. Fraser, L. P. Steele, R. L. Langenfelds, C. M. Trudinger, J. W. C. White, B. Vaughn, T. Saeki, S. Aoki, and T. Nakazawa


Total article views: 6,244 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
3,747 2,227 270 6,244 230 137 181
  • HTML: 3,747
  • PDF: 2,227
  • XML: 270
  • Total: 6,244
  • Supplement: 230
  • BibTeX: 137
  • EndNote: 181
Views and downloads (calculated since 05 Nov 2014)
Cumulative views and downloads (calculated since 05 Nov 2014)


Saved (final revised paper)

Saved (final revised paper)

Saved (preprint)

Latest update: 23 Jun 2024
Short summary
Atmospheric CH4 increased from 900ppb to 1800ppb during the period 1900–2010 at a rate unprecedented in any observational records. We use bottom-up emissions and a chemistry-transport model to simulate CH4. The optimized global total CH4 emission, estimated from the model–observation differences, increased at fastest rate during 1940–1990. Using δ13C of CH4 measurements we attribute this emission increase to biomass burning. Total CH4 lifetime is shortened by 4% over the simulation period.
Final-revised paper