Last reviewed on November 2, 2011 at 10:05
Documentation of California's Greenhouse Gas Inventory
(First Edition - Last updated on 11/19/2007)
♦ Category: Agriculture, Forestry and Other Land Use
IPCC: |
3A1aii - Livestock - Enteric Fermentation - Cattle - Other Cattle |
Sector: |
Agriculture & Forestry : Enteric Fermentation : Cattle |
♦ Activity: Livestock population - Heifer stockers
♦ Greenhouse gas: Methane ( CH4 )
► Year 1990 —
● Greenhouse gas emission estimate —
Amount: |
5,477 tonnes of CH4 Emitted (115,027 tonnes CO2 Eq.) |
Basis: |
Model |
Calculation: |
Cattle enteric fermentation model |
Reference: |
[1] - USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. and Annex 3.10: Methodology for Estimating CH4 and N2O Emissions from Manure Management. DRAFT for public review. February 20, 2007. Washington DC.
[2] - Wirth, T. (2007). Personal communication between Neva Lowery of CA Air Resources Board and Tom Wirth, Greenhouse Gas Inventory Source Lead, US Environmental Protection Agency, March 2007. |
● Activity level used in calculations —
Activity: |
Livestock population = 114,109 head of Heifer stockers |
Basis: |
Model |
Calculation: |
Cattle life cycle model |
Reference: |
[1] - USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. and Annex 3.9: Methodology for Estimating CH4 Emissions from Enteric Fermentation. DRAFT for public review. February 20, 2007. Washington DC.
[2] - Wirth, T. (2007). Personal communication between Neva Lowery of CA Air Resources Board and Tom Wirth, Greenhouse Gas Inventory Source Lead, US Environmental Protection Agency, March 2007. |
Reference: |
USDA (2007). U.S. Department of Agriculture, National Agriculture Statistics Service, California Statistics. Available online at: http://www.nass.usda.gov/Statistics_by_State/California/index.asp |
● Parameters and Constants used in calculations —
Parameter: |
Not applicable |
Constant: |
Global warming potential of CH4 = 21 |
Reference: |
IPCC (1996). Second Assessment Report. Climate Change 1995: WG I - The Science of Climate Change. Intergovernmental Panel on Climate Change; J.T. Houghton, L.G. Meira Filho, B.A. Callander, N. Harris, A. Kattenberg, and K. Maskell (eds.); Cambridge University Press. Cambridge, U.K. |
● Greenhouse gas emitted per unit activity —
Amount: |
48,002 g (i.e. 48 kg) of CH4 per head of Heifer stockers 1,008,046 g (i.e. 1.01 tonnes) of CO2eq. per head of Heifer stockers |