Parameter: |
EMFAC category fuel combustion = 71,285,712 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 NOx emission = 2,917,056,581 g (i.e. 2.92 thousand tonnes) |
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 = 2,157,919,828 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: |
FHWA fuel sales = 1,819,718,000 gal |
Reference: |
FHWA (various). US Department of Transportation, Federal Highway Administration - Highway Statistics (volumes 1990 - 2005). Note: FHWA classifies diesel (a.k.a. distillate) fuel as 'special fuels'. Data available online at: http://www.fhwa.dot.gov/policy/ohpi/hss/hsspubs.cfm |
Parameter: |
Fuel N2O emission = 0.332 g / gal |
Reference: |
Long, J. (2007). Personal communication between Kevin Eslinger of CA Air Resources Board and Jeff Long, Air Resources Board Mobile Sources Assessment Branch, September 2007. |
Parameter: |
Vehicle miles traveled = 2,046,791,429 mile |
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 |
Constant: |
Global warming potential of N2O = 310 |
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. |