U.S. CO
2
Emission Rates
¥
OIL
: 20M barrels/day x 800 lbs CO
2
/barrel x 365 days
¥
= 3 Gigatons CO
2
emitted into the atmosphere per year
¥
COAL
:
200 lbs CO
2
/million btu x 23,000,000 million btu
¥
= 4.6 Gigatons CO
2
emitted into the atmosphere per year
¥
¥
CO2 generation scale factors