Analysis of Atmospheric Transmission Characteristics in MIR Spectrum of VIIRS

The atmospheric transmission is an important parameter affecting the solar radiation and surface thermal radiation. In this paper, MODTRAN radiative transfer model was used to analysis the atmospheric Transmission in middle infrared (MIR) spectrum of VIIRS. We have quantitatively simulated and analyzed the effect of atmospheric profile, aerosol type, visibility, moisture content and observed zenith angle on atmospheric transmittance using the two MIR channels of VIIRS (M12 band and M13-band). The results showed that the transmissivities of the both two middle infrared channels M12 and M13 of VIIRS are influenced by the aerosol type, visibility and observation angle. And the influence of these factors on the M12 channel transmittance are greater impact, in addition, M12 band is strongly influenced by the change of atmospheric profile.