Emissions of Greenhouse Gases in the United States 1997 - Appendix B: Carbon Coefficients Used in This Report

Table B4. U.S. Crude Oil Characteristics, 1990-1998

Characteristic	1990	1991	1992	1993	1994	1995	1996	1997	1998
Density (API Gravity)	31.86	31.64	31.32	31.30	31.39	31.30	31.13	31.07	30.98
Density (Specific Gravity)	0.8662	0.8674	0.8691	0.8692	0.8686	0.8692	0.8701	0.8704	0.8708
Sulfur Content (Percent)	1.10	1.13	1.16	1.15	1.14	1.13	1.15	1.25	1.31
Carbon Share (Percent)	84.98	84.97	84.96	84.97	84.97	84.99	84.99	84.91	84.86
Emissions Coefficient (Million Metric Tons Carbon per Quadrillion Btu)	20.16	20.18	20.22	20.22	20.21	20.23	20.25	20.24	20.24
Note: Emissions coefficients assume 100 percent combustion. Sources: Energy Information Administration, Petroleum Supply Annual, DOE/EIA-0340 (Washington, DC, various years); and Energy Information Administration, Emissions of Greenhouse Gases in the United States 1987-1992, DOE/EIA-0573 (Washington, DC, November 1994), p. 91.