Results from the Vicarious Calibration of ADEOS/AVNIR and the Visible and Near-Infrared Channels of OCTS with AVIRIS

A field campaign for the vicarious calibration of the instruments ADEOS/AVNIR (Advanced Earth Observing Satellite/Advanced Visible and Near-Infrared Radiometer) and the visible to near-infrared channels of the Ocean Color and Temperature Scanner (OCTS) was conducted based on the reflectance-based method. The results show a not so small difference between the estimated top of atmosphere (ToA) radiance and the instruments’ data-derived radiance, i.e., 3.5 to 20%. In order to confirm the validity of the difference, vicarious calibration based on the radiance-based method was conducted using Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data. Also, an effect due to the spectral refractive index of aerosol on the estimation of the ToA radiance was confirmed, together with smear-like image defect in the AVNIR imagery data.