I'm trying to compile a list of remote sensing (Earth observing satellite) instruments capable of detecting methane in the atmosphere or near surface of Earth. After some search I have found:
- Japanese Greenhouse gases observing satellite (GOSAT), launched 2009, measuring CO2 and CH4.
- European Sentinel 5 and Sentinel 5 Precursor, measuring wide variety of atmospheric contents, 5P to be launched in 2016.
- Beginning private company GHGSAT, measuring greenhouse gas (GHG) and air quality gas (AQG) emissions.
Are there any other satellites?