October 18, 2013


The syntheses below are made on the same period than over Ocean, from the 11th to the 30th of November 1996. Examples with POLDER 2 data are presented in "Preliminary results".
Aerosol optical thickness at 865 nm wavelength.
Angström exponent.
Aerosol Index.

The optical thickness is rather low, compared to the oceanic one, because over land, only the small particles are detected using polarized measurements (anthropogenic aerosols).

The maximum values are found in the Ganja Valley (urban and industrial particles) and over South Africa and Sahelian region (biomass burning aerosol). The Aerosol Index (A.I.), which indicates the presence of small polarizing particles, makes possible the comparison between oceanic and continental aerosol retrievals.