An Improved C-Band Ocean Surface Emissivity Model at Hurricane-Force Wind Speeds Over a Wide Range of Earth Incidence Angles

An improved microwave radiometric ocean surface emissivity model has been developed to support forward radiative transfer modeling of brightness temperature and geophysical retrieval algorithms for the next-generation airborne Hurricane Imaging Radiometer instrument. This physically based C-band emi...

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Bibliographic Details
Published in:IEEE geoscience and remote sensing letters 2010-10, Vol.7 (4), p.641-645
Main Authors: El-Nimri, Salem Fawwaz, Jones, W Linwood, Uhlhorn, Eric, Ruf, Christopher, Johnson, James, Black, Peter
Format: Article
Language:English
Subjects:
Algorithms
Angle of incidence
Brightness temperature
Earth
Emissivity
Hurricane Imaging Radiometer (HIRAD)
hurricane winds
Hurricanes
Image retrieval
Incidence
Instruments
Microwave imaging
Microwave radiometry
Ocean surface
ocean surface emissivity
Ocean temperature
radiometry
Sea surface
Stepped-Frequency Microwave Radiometer (SFMR)
Wind speed
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Description
Summary:An improved microwave radiometric ocean surface emissivity model has been developed to support forward radiative transfer modeling of brightness temperature and geophysical retrieval algorithms for the next-generation airborne Hurricane Imaging Radiometer instrument. This physically based C-band emissivity model extends current model capabilities to hurricane-force wind speeds over a wide range of incidence angles. It was primarily developed using brightness temperature observations during hurricanes with coincident high-quality surface-truth wind speeds, which were obtained using the airborne Stepped-Frequency Microwave Radiometer. Also, other ocean emissivity models available through the published literature and the spaceborne WindSat radiometer measurements were used.
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2010.2043814