Last reviewed on 12-01-2023
Documentation of California's Greenhouse Gas Inventory
(2023 Edition - Last updated on 12-1-2023)
♦ Category: Energy
IPCC: |
1A3biii - Fuel Combustion Activities - Transport - Road Transportation - Heavy-duty Trucks and Buses |
Sector: |
Transportation : On Road : Heavy-duty Vehicles : Buses |
♦ Activity: Fuel combustion - Distillate
♦ Greenhouse gas: Nitrous oxide ( N2O )
► Year 2012 —
● Greenhouse gas emission estimate —
● Activity level used in calculations —
● Parameters and Constants used in calculations —
Parameter: |
EMFAC category fuel combustion = 67,190,710 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 total fuel combustion = 2,605,227,889 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 = 0.992 |
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 = 2,603,545,631 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 N2O = 298 |
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 |
● Greenhouse gas emitted per unit activity (derived from values listed above) —
Amount: |
1.6 g of N2O per gal of Distillate 477 g of CO2eq. per gal of Distillate |