Parameter: |
EMFAC category fuel combustion = 68,275,985 gal |
Reference: |
CARB (2021). The California Air Resources Board's Emission FACtors (EMFAC) model was used to calculate emission rates from all motor vehicles, such as passenger cars and heavy-duty trucks, operating on highways, freeways, and local roads in California. http://www.arb.ca.gov/msei/msei.htm |
Parameter: |
EMFAC CH4 emission = 9,214,332 g (i.e. 9.21 tonnes) |
Reference: |
CARB (2021). The California Air Resources Board's Emission FACtors (EMFAC) model was used to calculate emission rates from all motor vehicles, such as passenger cars and heavy-duty trucks, operating on highways, freeways, and local roads in California. http://www.arb.ca.gov/msei/msei.htm |
Parameter: |
EMFAC N2O emission = 11,532,784 g (i.e. 11.53 tonnes) |
Reference: |
CARB (2021). The California Air Resources Board's Emission FACtors (EMFAC) model was used to calculate emission rates from all motor vehicles, such as passenger cars and heavy-duty trucks, operating on highways, freeways, and local roads in California. http://www.arb.ca.gov/msei/msei.htm |
Parameter: |
EMFAC total fuel combustion = 14,878,514,415 gal |
Reference: |
CARB (2021). The California Air Resources Board's Emission FACtors (EMFAC) model was used to calculate emission rates from all motor vehicles, such as passenger cars and heavy-duty trucks, operating on highways, freeways, and local roads in California. http://www.arb.ca.gov/msei/msei.htm |
Parameter: |
Fraction of fuel mix = 0.901 |
Reference: |
CARB (2016). Technical support document on GHG inventory methodologies for the 2000-2014 inventory. See Discussion of emissions from on-road transportation available at: https://ww3.arb.ca.gov/cc/inventory/pubs/reports/2000_2014/ghg_inventory_00-14_technical_support_document.pdf |
Parameter: |
Fuel sales = 15,411,944,506 gal |
Reference: |
CDTFA (2022). [Formerly referred to as Board of Equalization (BOE)]. California Department of Tax and Fee Administration. Fuel Taxes Statistics & Reports - Motor Vehicle Fuel. Accessed online at: https://www.cdtfa.ca.gov/taxes-and-fees/spftrpts.htm |
Constant: |
Global warming potential of CH4 = 25 |
Reference: |
IPCC (2007). Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Solomon S., Qin D., Manning M., Chen Z., Marquis M., Averyt K.B., Tignor M., and Miller H.L. (eds.). http://www.ipcc.ch/publications_and_data/publications_ipcc_fourth_assessment_report_synthesis_report.htm |