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Temperature and salinity dependence of sea surface emissivity in the thermal infrared
Author(s) -
Newman S. M.,
Smith J. A.,
Glew M. D.,
Rogers S. M.,
Taylor J. P.
Publication year - 2005
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1256/qj.04.150
Subject(s) - emissivity , sea surface temperature , infrared , salinity , satellite , environmental science , temperature salinity diagrams , remote sensing , thermal infrared , atmospheric sciences , interferometry , materials science , geology , climatology , physics , optics , oceanography , astronomy
Aircraft and ground‐based interferometer measurements are used to investigate the dependence of sea surface emissivity on water temperature and salinity in the infrared spectral region. The effect of dissolved salts is found to be small and in line with previous studies, whereas temperature (often neglected in current emissivity models) has a greater impact. The influence on satellite sea surface temperature (SST) retrievals is found to be significant for high‐resolution infrared sounders: neglecting a temperature‐dependent emissivity leads to systematic errors in SST of as much as 0.6 K depending on channel frequency. © Crown copyright, 2005. Royal Meteorological Society