Influence of ocean surface waves and air bubbles on the polarization characteristics of spaceborne oceanographic lidar returns

Qun Liu; Dong Liu; Jian Bai; Yupeng Zhang; Xue Shen

doi:10.1117/12.2325295

10 October 2018 Influence of ocean surface waves and air bubbles on the polarization characteristics of spaceborne oceanographic lidar returns

Qun Liu, Dong Liu, Jian Bai, Yupeng Zhang, Xue Shen

Author Affiliations +

Proceedings Volume 10784, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2018; 107840O (2018) https://doi.org/10.1117/12.2325295
Event: SPIE Remote Sensing, 2018, Berlin, Germany

Abstract

The influence of wind-driven surface waves and air bubbles in water on the polarization characteristics of spaceborne oceanic lidar return signals is investigated through the meridian planes Monte Carlo method. The calculation results demonstrate that the depolarization ratio of lidar return signals increase with the increasing wind speed and nadir angle. However, compared with air bubbles the influence of surface waves could be neglected. The presence of air bubbles with high concentration in the upper ocean has a strong impact on the depolarization ratio. The polarization characteristics of the lidar return depend on the air bubble concentration, the bubble microstructure and the optical properties of oceanic waters. The change of the depolarization ratio is significant when the air bubble concentration exceeds 10⁵ m^-3 in open ocean water and 5×10⁵ m-3 in coastal water.

Conference Presentation

Citation Download Citation

Qun Liu, Dong Liu, Jian Bai, Yupeng Zhang, and Xue Shen "Influence of ocean surface waves and air bubbles on the polarization characteristics of spaceborne oceanographic lidar returns", Proc. SPIE 10784, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2018, 107840O (10 October 2018); https://doi.org/10.1117/12.2325295

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