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Realizing the Energy Potential of Methane Hydrate for the United States (2010) / Chapter Skim
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Appendix D: Comparison of Units of Measurement of Amounts of Methane by Volume and Weight
Pages 159-160

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From page 159...
... The following table compares amounts of methane in units of TCF, m3, and Pg in three categories: (1) assessments of amounts of conventional natural gas (methane)
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From page 160...
... methane consumption in 2008 23 6.5 × 1011 4.7 × 10–1 Methane in methane hydrateb Very early global estimates, based on many erroneous assumptions, ~35,000,000 ~1018 ~7.1 × 105 of the methane content of gas hydrate Recent range of global estimates of methane in methane hydrate 35,000 to 1 × 1015 to 7.1 × 102 to 177,000 5 × 1015 3.6 × 103 Mean MMS estimate of methane in hydrate in the Gulf of Mexico 21,000 6 × 1014 4.3 × 102 Mean U.S. Geological Survey estimate of technically recoverable 85.4 1.7 2.4 × 1012 methane from hydrate on the North Slope of Alaska Estimate of methane in hydrate, eastern Nankai Trough, Japan 40 1.14 × 1012 8.1 × 10–1 Atmospheric methanec Atmospheric abundance of methane ~250 ~5 ~7 × 1012 Estimate of total global flux of methane from all sources entering the 30 0.6 8.4 × 1011 atmosphere per year Estimate of total global sink for all methane entering the atmosphere 29 0.58 8.1 × 1011 per year a See Chapter 1.
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  • metric tons
  • geological survey
  • cubic feet

  • conversion factors
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  • methane hydrateb
  • recent range
  • atmospheric communities

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  • global flux

  • methane exhalations
  • methane consumption
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  • methanec atmospheric
  • gas hydrate


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