AP 42, Fifth Edition, Volume I Chapter 14: Greenhouse Gas Biogenic Sources
14.1 Emission from Soils - Greenhouse Gases
- Final Section - Supplement B, October 1996 (PDF) (6 pp, 24 K)
- Background Document (PDF) (6 pp, 21 K)
14.2 Termites - Greenhouse Gases
- Final Section - Supplement B, October 1996 (PDF) (3 pp, 16 K)
- Background Document (PDF) (4 pp, 12 K)
14.3 Lightning Emissions - Greenhouse Gases
- Final Section - Supplement B, October 1996 (PDF) (2 pp, 18 K)
- Background Document (PDF) (5 pp, 51 K)
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
- Paper by David A. Kirchgessner, USEPA, Stephen D. Piccot and Sushma S. Masemore Southern Research Institute (PDF) (48 pp, 280 K)
Estimate of Methane Emissions from the U.S. Natural Gas Industry