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: 1A3dii - Fuel Combustion Activities - Transport - Water-borne Navigation - Domestic Water-borne Navigation
Sector: Transportation : Water-borne : Intrastate : Port activities

♦ Activity: Fuel combustion - Residual fuel oil

♦ Greenhouse gas: Methane ( CH4 )

► Year 1990 —

● Greenhouse gas emission estimate —

Amount: 7.46 tonnes of CH4 Emitted (156.65 tonnes CO2 Eq.)
Basis: Calculation
Calculation: [Fuel combustion] * [Heat content] * [Fuel CH4 emission]
Reference: IPCC (1997). Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories (Revised Guidelines). Intergovernmental Panel on Climate Change. Published: IGES, Japan. http://www.ipcc-nggip.iges.or.jp/public/gl/invs1.htm

● Activity level used in calculations —

Activity: Fuel combustion = 10,043,319 gal of Residual fuel oil
Basis: Data
Reference: ARB (2007) Technical Support Document to the Proposed Regulations to Reduce Emissions from Diesel Auxiliary Engines on Ocean-Going Vessels While At Berth at a California Port (December 6, 2007). Appendix B: Hotelling Emissions Estimation Methodology for Ship Auxiliary Engines in California. CA Air Resources Board. Available online at: /regact/2007/shorepwr07/appb.pdf

● Parameters and Constants used in calculations —

Parameter: Fuel CH4 emission = 4.962E-06 g / btu
Reference: ARB (2007) Technical Support Document to the Proposed Regulations to Reduce Emissions from Diesel Auxiliary Engines on Ocean-Going Vessels While At Berth at a California Port (December 6, 2007). Appendix B: Hotelling Emissions Estimation Methodology for Ship Auxiliary Engines in California. CA Air Resources Board. Available online at: /regact/2007/shorepwr07/appb.pdf
Parameter: Heat content = 149,690 btu / 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 2.1 (Tables A-31, A-32, A-35, and A-36). 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: 0.743 g of CH4 per gal of Residual fuel oil
15.6 g of CO2eq. per gal of Residual fuel oil
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