Measurements of the radiance and degree of polarization and optical thickness of aerosol made by a portable multi-spectral polarimeter on the ship are presented. The radiance and degree of polarization and the optical thickness of the aerosol over the ocean were measured from the ship. Wavelength regions are the same as those of visible and near-infrared bands of POLDER and OCTS on board the ADEOS satellite launched in August, 1996. As a whole, the numerical simulation agrees relatively well with the measurements in the radiance and the degree of polarization at the scattering angle of 90°from the solar direction.
