Aquatic Sciences Meeting, Albuquerque 2001

PC02 Optical Studies in Aquatic Ecosystems

Date: Tuesday, February 13, 2001

Location: Southwest Hall

Zaneveld, J, R, Oregon State University, Corvallis, OR, USA, zaneveld@oce.orst.edu

Boss, E, , Oregon State University, Corvallis, OR, USA, eboss@oce.orst.edu

THE DEPENDENCE OF THE REMOTELY SENSED REFLECTANCE ON SURFACE WAVES.

We use our Modulation Transfer Function based radiative transfer program to investigate effects of wind-modulated surfaces on the returned radiance. We use a specific ocean surface (made up out of a sum of sinusoids), not a statistical approach. The model uses the Fresnel equations to determine the transmission through the surface. It then keeps track of the direction and absorption losses of each ray. At each depth we sort the rays spatially, and sum their irradiance values, to give us the irradiance as a function of horizontal location at a given depth z. Scattering is introduced using the MTF method first proposed by Wells. This model is not based on the plane parallel assumption and so can accommodate limited beam widths such as those used in lidar. We will show how the surface wave structure affects the returned radiance for both narrow (lidar) and wide (passive) beams when the inherent optical properties are held constant.

This Session Listing

Aquatic Sciences Meeting, Albuquerque 2001

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