Last reviewed on November 2, 2011 at 10:05
Documentation of California's Greenhouse Gas Inventory
(First Edition - Last updated on 11/19/2007)
♦ Category: Energy
IPCC: |
1A3c - Fuel Combustion Activities - Transport - Railways |
Sector: |
Transportation : Rail |
♦ Activity: Fuel combustion - Distillate
♦ Greenhouse gas: Methane ( CH4 )
► Year 1990 —
● Greenhouse gas emission estimate —
Amount: |
180.27 tonnes of CH4 Emitted (3,786 tonnes CO2 Eq.) |
Basis: |
Calculation |
Calculation: |
[Fuel combustion] * [Fuel density] * [Fuel CH4 emission] |
Reference: |
USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. Annex 3.2. Methodology for Estimating Emissions of CH4, N2O, and Indirect Greenhouse Gases from Mobile Combustion. April 15, 2007. Washington DC. http://www.epa.gov/climatechange/emissions/usgginv_archive.html |
● Activity level used in calculations —
Activity: |
Fuel combustion = 225,930,000 gal of Distillate |
Basis: |
Data |
Reference: |
Murtishaw, S., De La Rue du Can, S,. Price, L., Masanet, E., and Simcich, M. (2005). CALEB: California Energy Balance Database, September 12, 2005. Lawrence Berkeley National Laboratory, Berkeley, CA. |
● Parameters and Constants used in calculations —
Parameter: |
Fuel CH4 emission = 0.25 g / kg |
Reference: |
USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. Annex 3.2. Methodology for Estimating Emissions of CH4, N2O, and Indirect Greenhouse Gases from Mobile Combustion. April 15, 2007. Washington DC. http://www.epa.gov/climatechange/emissions/usgginv_archive.html |
Parameter: |
Fuel density = 3.19 kg / gal |
Reference: |
USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. Annex 6: Additional Information. April 15, 2007. Washington DC. http://www.epa.gov/climatechange/emissions/usgginv_archive.html |
Constant: |
Global warming potential of CH4 = 21 |
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. |
● Greenhouse gas emitted per unit activity —
Amount: |
0.798 g of CH4 per gal of Distillate 16.8 g of CO2eq. per gal of Distillate |