Trace Gases Measured by ACATS-IV and their Atmospheric Importance

 

 

chemical

 

Atmospheric

common name

formula

Sources

Importance

nitrous oxide

N2O

Natural, fertilizer application, animal waste

   1,2

sulfur hexafluoride

SF6

Insulator in high voltage systems

   2

CFC-12

CCl2F2

Refrigerant

   1,2

halon-1211

CBrClF2

Fire extinguishing agent

   1,2

CFC-11

CCl3F

Foam blowing agent

   1,2

CFC-113

CCl2FCClF2

Solvent

   1,2

chloroform

CHCl3

Natural, waste treatment, paper production

   1

methyl chloroform

CH3CCl3

Solvent

   1,2

carbon tetrachloride

CCl4

Solvent, feedstock for CFC production

   1,2

hydrogen

H2

Hydrocarbon oxidation, combustion

 

methane

CH4

Natural, ruminant animals, combustion

   2

carbon monoxide

CO

Combustion, hydrocarbon oxidation

 

 

1.      Breaks apart in the stratosphere and reacts with stratospheric ozone (Ozone Depletion)

2.      Absorbs longwave radiation and traps heat in the lower atmosphere (Greenhouse Gas)