Publication Abstracts

Ottaviani et al. 2008

Ottaviani, M., 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

  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},
  journal={J. Quant. Spectrosc. Radiat. Transfer},

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RIS Citation

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
VL  - 109
SP  - 2364
EP  - 2375
DO  - 10.1016/j.jqsrt.2008.05.012
ER  -

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