Calculation of the remote sensing reflectance based on the total upwelling radiance measured from the Optik Tu-134 aircraft laboratory

Abstract

A method has been developed for calculating the spectral remote sensing reflectance based on the total upwelling radiance measurements, carried out from the ‘Optik’ Tu-134 aircraft laboratory over the Kara Sea on September 10, 2022. Data on the spectral downwelling irradiance and the reference remote sensing reflectance were obtained during synchronous underaircraft measurements from the R/V ‘Akademik Mstislav Keldysh’. To calculate the remote sensing reflectance, a simple two-parameter formula is proposed (with the relative error of 7%), the application of which allows one to separate the reflected from the surface radiation and take into account the variability of sky conditions due to the influence of variable cloudiness.