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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 60K)
    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
  • Paper by David A. Kirchgessner, USEPA, Stephen D. Piccot and Sushma S. Masemore Southern Research Institute (PDF 749K)
Estimate of Methane Emissions from the U.S. Natural Gas Industry
  • Paper by David A. Kirchgessner, Robert A. Lott, R. Michael Cowgill, Matthew R. Harrison, Theresa M. Shires
    Published in Chemosphere, Vol. 35, No.6, pp. 1365-1390, 1997 Published by Elsevier Science Ltd. All rights reserved. Printed in Great Britain 0045-6535/97 (PDF 135K)

AP 42 Emissions Factors by Chapter

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