Intercalibration of Polar-Orbiting Spectral Radiometers Without Simultaneous Observations.

A new intercalibration method for two polar-orbiting satellite instruments or two instrument constellations' Fundamental Climate Data Records (FCDRs) is presented. It is based on statistical fitting of reflectance data from the two instruments covering the same area during the same period, but not simultaneously. A Deming regression with iterative weights is used. The accuracy of the intercalibrat...