The effect of aerosol scattering on the ocean color polarization correction

Xianqiang He; Tianming Mao; Delu Pan; Zengzhou Hao

doi:10.1117/12.737456

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8 October 2007 The effect of aerosol scattering on the ocean color polarization correction

Xianqiang He, Tianming Mao, Delu Pan, Zengzhou Hao

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Proceedings Volume 6743, Remote Sensing of the Ocean, Sea Ice, and Large Water Regions 2007; 67430F (2007) https://doi.org/10.1117/12.737456
Event: SPIE Remote Sensing, 2007, Florence, Italy

Abstract

The effect of the polarization response is remarkably for some of the ocean color remote sensors with high polarization sensitivity, such as MODIS. The current implementation of the MODIS polarization correction algorithm has been applied operational, however it ignores the polarization component produced by aerosol scattering. In order to assess the effect of the aerosol scattering, we use the coupled ocean-atmospheric vector radiative transfer model PCOART to simulate the top of atmosphere linear polarization radiance at two cases, one is the pure Rayleigh atmosphere which absents aerosol, the other case has the aerosol thickness of 0.2. The results show that aerosol scattering has neglect effect on the blue wavelength (443nm) except at the sun glint, however, the effect on the near infrared wavelength (865nm) is remarkable. Otherwise, we compare the POLDER remote sensing and PCOART simulated TOA linear polarization radiance with the pure Rayleigh atmosphere and the results also show that aerosol scattering has neglect effect on the blue wavelength (443nm), but has large effect on the near infrared wavelength (865nm). Finally, we improve the ocean color polarization correction algorithm of MODIS by considering the aerosol scattering effect on the TOA linear polarization radiance. By using POLDER remote sensing polarization data, this improved algorithm is validated and the result shows that the improved algorithm has more accuracy than the origin polarization correction algorithm, especially at near infrared wavelength.

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Xianqiang He, Tianming Mao, Delu Pan, and Zengzhou Hao "The effect of aerosol scattering on the ocean color polarization correction", Proc. SPIE 6743, Remote Sensing of the Ocean, Sea Ice, and Large Water Regions 2007, 67430F (8 October 2007); https://doi.org/10.1117/12.737456

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