Last reviewed on 12-01-2023
Documentation of California's Greenhouse Gas Inventory
(2023 Edition - Last updated on 12-1-2023)
♦ Category: Agriculture, Forestry and Other Land Use
IPCC: |
3A1ai - Livestock - Enteric Fermentation - Cattle - Dairy Cows |
Sector: |
Agriculture & Forestry : Enteric Fermentation : Cattle |
♦ Activity: Livestock population - Dairy calves
♦ Greenhouse gas: Methane ( CH4 )
► Year 2016 —
● Greenhouse gas emission estimate —
● Activity level used in calculations —
Activity: |
Livestock population = 887,651 head of Dairy calves |
Basis: |
Model |
Calculation: |
Cattle life cycle model |
Reference: |
USEPA (2013). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2011 U.S. Environmental Protection Agency. Annex 3.10: Methodology for Estimating CH4 Emissions from Enteric Fermentation. https://www.epa.gov/sites/production/files/2015-12/documents/us-ghg-inventory-2013-annexes.pdf |
Reference: |
USDA and CDFA, various years. The USDA agriculturlal census provides statewide milking cow populations every five years (2002, 2007, 2012). The milking cow population for intervening years are interpolated from CDFA growth profiles for non-census years. https://www.agcensus.usda.gov/Publications/ |
● Parameters and Constants used in calculations —
● Greenhouse gas emitted per unit activity (derived from values listed above) —
Amount: |
11,633 g (i.e. 11.63 kg) of CH4 per head of Dairy calves 290,828 g (i.e. 290.83 kg) of CO2eq. per head of Dairy calves |