Methane global

Cicerone, R. J., and R. S. Oremland, Biogeochemical Aspects of Atmospheric Methane, Global Biogeochem. Cycles, 2, 299-327 (1988). 

Cicerone R.J. and Oremland R.S. (1988) Biogeochemical aspects of atmospheric methane. Global Biogeochemical Cycles 2,299-327. 

Bange, H.W., Bartell, U.H., Rapsomanikis, S., and Andreae, M.O. (1994) Methane in the Baltic and North Seas and a reassessment of the marine emissions of methane. Global Biogeochem. Cycles 8, 465-480. 

Quay P. D., Stutsman J., Wilbur D., Snover A., Dlugokencky E., and Brown T. (1999) The isotopic composition of atmospheric methane. Global Biogeochem. Cycles 13, 445-461. 

Sugimoto A., Inoue T., Kirtibutr N., and Abe T. (1998) Methane oxidation by termite mounds estimated by the carbon isotopic composition of methane. Global Biogeo-chem. Cycles 12, 595-605. 

Chen JS, Shao MR, Huo WG, Yao YY (1984) Carbon isotopes of carbonate strata at Permian-Triassic boundary in Changxing, Zhejiang. Scient Geol Sinica 1984 88-93 Cicerone RJ, Oremland RS (1988) Biogeochemcal aspects of atmospheric methane. Global Biogeochem Cycles 2 299-327... 

With the addition of CO caused by photochemical oxidation of methane, a significant flux enters the atmosphere annually, but the principal global contributions are terrestrial, anthropogenic and from atmospheric photolysis of methane. 

K. Hillman, H. van Wyk, E. Milne, C.S. Stewart, and M.F. Fuller, in Symposium on Global Methane Flux, Abstracts, Society for General Microbiology, 1995, p. 24. 

Natural gas is a mixture of naturally-occurring methane (CH ) with other hydrocarbons and inert gases. The 2.3 trillion cubic meters (Tcm) or 81 trillion cubic feet (Tcf) of gas marketed and consumed globally in 1997 accounted for about 24 percent of the world s primary energy, ranking third among fuels after petroleum liquids (40%) and coal (25%). 

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