Methane data

1
Methane data

• Good fit?
• 58 of methane produced by agriculture
• Rice paddies
• Cows (flatulence)
• Deforestation by fire
• Coal mining
• Coal burning
• Landfills
• Active in atmosphere for 10 years

2
N2O data

• Good fit?
• Deforestation by fire
• Use of fertilizers
• Steel refining
• Active in atmosphere for 150 yrs

3
CFC Data

• Global CFC emissions decreasing due to Intl law
• All CFCs human made
• Used as propellant and refrigerant
• Active in atmosphere for centuries
• Warming and breaking up ozone molecules
• This is why you shouldnt vent your A/C!

4
CFC Dataemissions
5
CFC Datasales production
6
Equivalent CO2

• 295 ppm in 1750
• 425 in 1990
• Expected to be 600
• in 2035