Abstract

We developed one satellite payload based on convex grating IDOAS system which can measure trace gases concentration, such as NO2, SO2 and O3, called Environmental trace gases Monitoring Instrument(EMI). The instrument is a space based spectrometer designed to measure sunlight transmitted, reflected and scattered by the Earth atmosphere or surface. The instrument measures simultaneously and contiguously radiation in the wavelength range from 240 to 710 nm at moderate spectral resolution (0.3 nm - 0.5 nm) in nadir.

The main objective of the instrument mission is to improve our knowledge of global atmospheric change and the related global issues of importance to the chemistry and physics of our atmosphere. The primary scientific objective of the isturment is the global measurement of trace gases in the atmospher.

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