[thedilg]

Post 18 says, "man puts out about 7,100 Mt of co2(i.e. about 7 billion tons a year.)" This is about 1/20th his reported volcanic output. On the other hand Post 12 says man puts out 22 billion tons a year. This value is 150 times greater than his reported volcanic output.(If my math is correct this is a huge difference.) Does anyone know who is correct, or are they both wrong. Godspeed,

[palmer]

My post 18 (7.1Gt) comes from this source: http://www.eia.doe.gov/oiaf/1605/gg97rpt/chap1.html Post 12 quotes total carbon which is apparantly 3x greater. My post only referenced one volcano (Pinatubo 1991) but post 12 has yearly totals.