The carbon isotopic composition of atmospheric methane
Abstract
Recent measurements of the carbon isotopic abundance of atmospheric methane give a value of δ(13C/12C) = -47.0 ± 0.3‰, which is significantly different from earlier values measured by others between 1950 and 1970. The isotopic composition of various sources and the possibility of a temporal trend are discussed. The average methane concentration measured was 1.66 ppm, which is in accord with the increase in concentration since 1965-1970 observed in other studies.
- Publication:
-
Journal of Geophysical Research
- Pub Date:
- June 1982
- DOI:
- 10.1029/JC087iC07p04879
- Bibcode:
- 1982JGR....87.4879S
- Keywords:
-
- Air Sampling;
- Atmospheric Composition;
- Carbon Isotopes;
- Methane;
- Abundance;
- Carbon 12;
- Carbon 13