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: 1A3di - Fuel Combustion Activities - Transport - Water-borne Navigation - International Water-borne Navigation (International Bunkers)
Sector: Transportation : Water-borne : International Marine Bunker Fuel

♦ Activity: Fuel combustion - Residual fuel oil

♦ Greenhouse gas: Methane ( CH4 )

► Year 1990 —

● Greenhouse gas emission estimate —

Amount: 1,708 tonnes of CH4 Excluded (35,874 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 = 2,077,559,862 gal of Residual fuel oil
Basis: Data
Reference: This California Energy Balance Database (CALEB) value was adjusted by ARB staff based on additional information used for a complementary category. (CALEB: Murtishaw, S., De La Rue du Can, S,. Price, L., Masanet, E., and Simcich, M. (2005). California Energy Balance Database, September 12, 2005. Lawrence Berkeley National Laboratory, Berkeley, CA.)

● Parameters and Constants used in calculations —

Parameter: Fuel CH4 emission = 0.23 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 = 3.58 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 excluded per unit activity —

Amount: 0.822 g of CH4 per gal of Residual fuel oil
17.3 g of CO2eq. per gal of Residual fuel oil
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