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Air Emissions Factors and Quantification

AP 42, Fifth Edition, Volume I Chapter 14: Greenhouse Gas Biogenic Sources

14.1 Emission from Soils - Greenhouse Gases

14.2 Termites - Greenhouse Gases

14.3 Lightning Emissions - Greenhouse Gases

14.4 Enteric Fermentation - Greenhouse Gases

  • Final Section - Supplement D, February 1998 (PDF) (8 pp, 63 K)
  • Errata: Updated October 14, 2009. A typographical error in the equation was corrected in October 2009. The emission factor was shown as 5.17 ton CH4/year and was corrected to be 51.7 ton CH4/year.

Related Emission Factor Documents
An Improved Inventory of Methane Emissions from Coal Mining in the United States

Estimate of Methane Emissions from the U.S. Natural Gas Industry

AP 42 Emissions Factors by Chapter