Publication Abstracts
Ottaviani et al. 2008
, R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, 2008: Improving the description of sunglint for accurate prediction of remotely sensed radiances. J. Quant. Spectrosc. Radiat. Transfer, 109, 2364-2375, doi:10.1016/j.jqsrt.2008.05.012.
The bidirectional reflection distribution function (BRDF) of the ocean is a critical boundary condition for radiative transfer calculations in the coupled atmosphere-ocean system. Existing models express the extent of the glint-contaminated region and its contribution to the radiance essentially as a function of the wind speed. An accurate treatment of the glint contribution and its propagation in the atmosphere would improve current correction schemes and hence rescue a significant portion of data presently discarded as "glint contaminated". In current satellite imagery, a correction to the sensor-measured radiances is limited to the region at the edge of the glint, where the contribution is below a certain threshold. This correction assumes the sunglint radiance to be directly transmitted through the atmosphere. To quantify the error introduced by this approximation we employ a radiative transfer code that allows for a user-specified BRDF at the atmosphere=ocean interface and rigorously accounts for multiple scattering. We show that the errors incurred by ignoring multiple scattering are very significant and typically lie in the range 10-90%. Multiple reflections and shadowing at the surface can also be accounted for, and we illustrate the importance of such processes at grazing geometries.
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BibTeX Citation
@article{ot09000a, author={Ottaviani, M. and Spurr, R. and Stamnes, K. and Li, W. and Su, W. and Wiscombe, W.}, title={Improving the description of sunglint for accurate prediction of remotely sensed radiances}, year={2008}, journal={Journal of Quantitative Spectroscopy and Radiative Transfer}, volume={109}, pages={2364--2375}, doi={10.1016/j.jqsrt.2008.05.012}, }
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RIS Citation
TY - JOUR ID - ot09000a AU - Ottaviani, M. AU - Spurr, R. AU - Stamnes, K. AU - Li, W. AU - Su, W. AU - Wiscombe, W. PY - 2008 TI - Improving the description of sunglint for accurate prediction of remotely sensed radiances JA - J. Quant. Spectrosc. Radiat. Transfer JO - Journal of Quantitative Spectroscopy and Radiative Transfer VL - 109 SP - 2364 EP - 2375 DO - 10.1016/j.jqsrt.2008.05.012 ER -
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