Vol. 4, issue 08, article # 12

Abstract:

Inadequacy of the linear theory of the multichannel method (MCM) of the IR measurements of the temperature of the ocean surface (TOS) through the atmosphere is demonstrated. The four–channel parameterization of the IR measurements of the TOS is obtained on the basis of a quadratic approximation of the atmospheric transmission function entering in the radiative transfer equation, from the two spectral measurements at two zenith angles. Different two–channel reductions of this parameterization are tested based on the in situ measurements of the TOS and the NOAA–10/AVHRR data obtained in the spectral regions near 3.7 and 10.8 mcm. It is concluded that, in order to determine the TOS accurately, the angular IR measurements (or at least a synoptic adaptation of the angular parameter) are needed.