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Radiative Transfer Simulations of the Two-Dimensional Ocean Glint Reflectance and Determination of the Sea Surface RoughnessAn optimized discrete-ordinate radiative transfer model (DISORT3) with a pseudo-two-dimensional bidirectional reflectance distribution function (BRDF) is used to simulate and validate ocean glint reflectances at an infrared wavelength (1036 nm) by matching model results with a complete set of BRDF measurements obtained from the NASA cloud absorption radiometer (CAR) deployed on an aircraft. The surface roughness is then obtained through a retrieval algorithm and is used to extend the simulation into the visible spectral range where diffuse reflectance becomes important. In general, the simulated reflectances and surface roughness information are in good agreement with the measurements, and the diffuse reflectance in the visible, ignored in current glint algorithms, is shown to be important. The successful implementation of this new treatment of ocean glint reflectance and surface roughness in DISORT3 will help improve glint correction algorithms in current and future ocean color remote sensing applications.





Document ID
20160002959
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lin, Zhenyi
(Stevens Institute of Technology Hoboken, NJ, United States)
Li, Wei
(Stevens Institute of Technology Hoboken, NJ, United States)
Gatebe, Charles
(Universities Space Research Association Columbia, MD, United States)
Poudyal, Rajesh
(Science Systems and Applications, Inc. Lanham, MD, United States)
Stamnes, Knut
(Stevens Institute of Technology Hoboken, NJ, United States)
Date Acquired
March 3, 2016
Publication Date
February 12, 2016
Publication Information
Publication: Applied Optics
Publisher: Optical Society of America/OSA Publishing
Volume: 55
Issue: 6
ISSN: 2155-3165
Subject Category
Geophysics
Report/Patent Number
GSFC-E-DAA-TN30113
Distribution Limits
Public
Copyright
Other
Keywords
glint
radiative transfer
BRDF

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