An optimized sea surface emissivity model

Abstract

In existing sea surface emissivity models, the uniform temperature deviation correction is made. Yet the isotropy and anisotropy of sea surface emissivity increment are different at different temperatures, which requires that the sea surface emissivity increment signals at different temperatures should be treated differently. In this paper, an optimized sea surface emissivity model is proposed, in which the impact of temperature is comprehensive considered. Meanwhile, the temperature data was retrieved and was as input data for the following research. The result shows that, compared with the existing temperature products, the accuracy of proposed sea surface emissivity modeling using temperature derived from this paper is improved obviously, which makes the root mean squared difference (RMSD) decrease approximately 8% and 5% for V and H polarization channel, respectively. The conclusion can be drawn that the precision of the optimized sea surface emissivity model is improved obviously.