The Greenhouse Gas Instrument

The climate change caused by the greenhouse gases in the atmosphere which are increasing year by year has become one of the most important questions on earth. To solve the climate question, we need to detect these gases in the atmosphere, obtain their concentration distribution, and analyze their sources. The Greenhouse Gas Instrument (GHGI) is a near-infrared and short-wave infrared (NIR/SWIR) nadir solar backscatter spectrometer, which is used to detect the concentration distribution of global greenhouse gases and increase the quantitative inversion precision of the gases further, gases measured include CO2, CH4, CO, and so on. GHGIs spatial resolution is 3 km × 3 km, spectral resolution is higher than 0.1 nm. In this paper, the instrument and its performance are discussed.