대류권 오존 화학: CO,CH4-chemistry

O3-CO 일변화

CO oxidation

 

 

 

Sources of CH4 (메탄):

Roughly 10% of ·OH in the troposphere reacts with CH4 
[CH4] ~ 1.6 – 1.7 ppm (global avg.)

• Biological process of methanogenesis, such as enteric fermentation (e.g. in cows)
• Natural wetlands
• Rice paddies (in the soil)
• Termite guts
• Landfills
• Fossil fuel reservoirs (so called ancient methanogenesis). 
• Anthropogenic fossil-fuel combustion
• Biomass burning
• Sink of methane:
• Atmospheric oxidation

 

CH4 oxidation

HCHO (포름알데하이드)