Last reviewed on February 25, 2013 at 15:57
Documentation of California's Greenhouse Gas Inventory
(5th Edition - Last updated on 02/19/2013)
♦ Category: Energy
| IPCC: |
1A3bi - Fuel Combustion Activities - Transport - Road Transportation - Cars |
| Sector: |
Transportation : On Road : Light-duty Vehicles : Passenger Cars |
♦ Activity: Fuel combustion - Ethanol
♦ Greenhouse gas: Carbon dioxide ( CO2 )
► Year 2000 —
● Greenhouse gas emission estimate —
| Amount: |
154,280 tonnes of CO2 Emitted (154,280 tonnes CO2 Eq.) |
| Basis: |
Calculation |
| Calculation: |
[Fuel combustion] * [Heat content] * [Fuel CO2 emission] |
| Reference: |
IPCC (2006). 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Prepared by the National Greenhouse Gas Inventories Programme, Eggleston H.S., Buendia L., Miwa K., Ngara T., and Tanabe K. (eds). Volume 2, Chapter 2: Stationary Combustion. Published: IGES, Japan. http://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/2_Volume2/V2_2_Ch2_Stationary_Combustion.pdf |
● Activity level used in calculations —
| Activity: |
Fuel combustion = 26,836,151 gal of Ethanol |
| Basis: |
Calculation |
| Calculation: |
[EMFAC category fuel combustion] * ([Fuel sales] / [EMFAC total fuel combustion]) * [Fraction of fuel mix] |
| Reference: |
ARB (2012). Upcoming technical support document on GHG inventory methodologies for the 2000-2010 inventory. Specific questions may be directed to ARB staff, see: http://www.arb.ca.gov/cc/inventory/contacts.htm |
| Reference: |
Not Applicable. |
● Parameters and Constants used in calculations —
| Parameter: |
EMFAC category fuel combustion = 7,119,355,600 gal |
| Reference: |
ARB (2007). The California Air Resources Board's EMission FACtors (EMFAC) model was used to calculate emission rates from all motor vehicles, such as passenger cars to heavy-duty trucks, operating on highways, freeways and local roads in California. Model and documentation available online at: http://www.arb.ca.gov/msei/onroad/latest_version.htm |
| Parameter: |
EMFAC total fuel combustion = 14,355,311,175 gal |
| Reference: |
ARB (2007). The California Air Resources Board's EMission FACtors (EMFAC) model was used to calculate emission rates from all motor vehicles, such as passenger cars to heavy-duty trucks, operating on highways, freeways and local roads in California. Model and documentation available online at: http://www.arb.ca.gov/msei/onroad/latest_version.htm |
| Parameter: |
Fraction of fuel mix = 3.763E-03 |
| Reference: |
ARB (2012). Upcoming technical support document on GHG inventory methodologies for the 2000-2010 inventory. Specific questions may be directed to ARB staff, see: http://www.arb.ca.gov/cc/inventory/contacts.htm |
| Parameter: |
Fuel CO2 emission = 0.0684 g / btu |
| Reference: |
ARB (2012). Upcoming technical support document on GHG inventory methodologies for the 2000-2010 inventory. Specific questions may be directed to ARB staff, see: http://www.arb.ca.gov/cc/inventory/contacts.htm |
| Parameter: |
Fuel sales = 14,378,254,190 gal |
| Reference: |
FHWA (various). US Department of Transportation, Federal Highway Administration - Highway Statistics Series. Motor Fuel. Data accessed online at: http://www.fhwa.dot.gov/policy/ohpi/qffuel.cfm |
| Parameter: |
Heat content = 84,000 btu / gal |
| Reference: |
USEPA (2012). Mandatory Reporting of Greenhouse Gas Regulation http://www.epa.gov/ghgreporting/ |
● Greenhouse gas emitted per unit activity —
| Amount: |
5,749 g (i.e. 5.75 kg) of CO2 per gal of Ethanol |
