The Vis/NIR OMEGA imaging spectrometer on-board Mars Express

摘要: The Vis/NIR OMEGA imaging spectrometer on-board Mars Express has been operating in orbit since January 2004. spectral range of (352 channels from 0.35 to 5.1 μm) makes it possible identify H2O and CO2 ices frosts their characteristic signatures the near IR. Constraints on grain size volume fraction dust ice inclusions can be obtained relative depth absorption bands (in particular 1.25 μm, 1.5 2 3 μm for ice, 1.43 2.7 ice). Temperatures > 200 K determined radiance at 5 μm. role free aerosols assessed factor wavelengths corresponding saturated bands.