A comparison of ocean emissivity models using the Advanced Microwave Sounding Unit, the Special Sensor Microwave Imager, the TRMM Microwave Imager, and airborne radiometer observations
Résumé
New measurements of the permittivity of saline water at millimeter wavelengths have the potential to improve the accuracy of ocean surface emissivity models for use with microwave and millimeter-wave imaging and sounding instruments. Recent radiative transfer models employing a range of different treatments of surface ocean emissivity are compared with observations from the following microwave radiometers: Advanced Microwave Sounding Unit, Special Sensor Microwave Imager, TRMM Microwave Imager, Microwave Airborne Radiometer Scanning System, and Deimos. Emissivity models using the new permittivity model fit these observations more closely than those models which use the Klein and Swift extrapolation model.
Mots clés
Meteorology and Atmospheric Dynamics: Numerical modeling and data assimilation
Meteorology and Atmospheric Dynamics: Radiative processes
Meteorology and Atmospheric Dynamics: Remote sensing
Meteorology and Atmospheric Dynamics: Instruments and techniques
permittivity
microwave
AMSU
SSM/I
TMI
MARSS
Earth Science
Domaines
Planète et Univers [physics]
Fichier principal
Journal of Geophysical Research Atmospheres - 2003 - Ellison - A comparison of ocean emissivity models using the Advanced.pdf (629.23 Ko)
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