A basic limitation of the split window method for SST retrievals when applied to a wide range of water vapor conditions

Abstract

The split window method for retrieving sea surface temperatures (SST) from satellite‐based observations is evaluated from radiative transfer calculations, and shown to have an inherent limitation that arises from a linear assumption in the correction scheme. This general limitation leads to significant errors (of several degrees in some cases) in the retrieved SST; the theoretical basis for the error is examined.