Assumptions to the Annual Energy Outlook 2001 - Table 4. Coefficients of Linear Equations for Natural Gas- and Oil-Related Methane Emissions

Table 4. Coefficients of Linear Equations for Natural Gas- and Oil-Related Methane Emissions

Emissions Sources	Intercept	Variable Name and Units	Coefficient	Variable Name and Units	Coefficient
Natural Gas	-38.77	Time trend (calendar year)	.02003	Dry gas production (thousand cubic feet	.02186
Natural Gas Processing	-0.9454	Natural gas liquids production (million barrels per day)	.9350	Not applicable
Natural Gas Transmission and Storage	2.503	Pipeline fuel use (thousand cubic feet)	1.249	Dry gas production (thousand cubic feet)	-0.06614
Natural Gas Distribution	-58.16	Time trend (calendar year)	.0297	Natural gas consumption (quadrillion Btu)	.0196
Oil production, Refining, and Transport	0.03190	Oil consumption (quadrillion Btu)	.002764	Not applicable
Source: Derived from data used in Energy Information Administration, Emissions of Greenhouse Gases in the United States 1999, DOE/EIA-0573(99), (Washington, DC, October 2000).