Long-term Trends of CO2 and CH4 Concentrations

Increasing CO2 and CH4 in the Earth’s Atmosphere

[Category]Observation Data

[Posted]2025/11/10


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GOSAT satellite observations

Long-term trend of the whole-atmosphere monthly mean concentration of CO2 calculated by using GOSAT data
Long-term trend of the whole-atmosphere monthly mean concentration of CH4 calculated by using GOSAT data

Surface observations

Atmospheric CO2 Mixing Ratios
Atmospheric CO2 Mixing Ratios [Cape Ochi-ishi Station]
Atmospheric CO2 Mixing Ratios [Hateruma Station]
Atmospheric CH4 Mixing Ratios
Atmospheric CH4 Mixing Ratios [Cape Ochi-ishi Station]
Atmospheric CH4 Mixing Ratios [Hateruma Station]
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