Inversion algorithm and validations of POAM II aerosol products

Colette Brogniez; Jacqueline Lenoble; Didier Ramon; R. Ramananaherisoa

doi:10.1117/12.198587

Abstract

The Polar Ozone and Aerosol Measurements II (POAM II) has been developed by the Naval Research Laboratory and launched end of September 1993 on the french satellite SPOT 3. The instrument observes solar occultations at 9 wavelength channels. The inversion algorithm allows the retrieval of the extinction vertical profiles and the separation of the species contributing to this extinction: air molecules, aerosols, ozone, water vapor and nitrogen dioxide; furthermore the retrieval of aerosol extinction at 4 wavelengths provides an information on the aerosol size distribution. An inversion algorithm has been developed at the LOA and preliminary comparisons with the NRL algorithm are presented. Two balloon-borne instruments have been flown from Kiruna (Sweden) in coincidence with POAM II observations: one of the instrument (RADIBAL) measures the radiance and polarization diagrams in the near infrared during the balloon ascent; the other instrument (BALLAD) observes the earth's limb at 3 wavelengths from the balloon ceiling altitude. Both instruments are complementary and provide the aerosol profile and the aerosol size distribution. Preliminary comparisons with POAM II data are presented.

Citation Download Citation

Colette Brogniez, Colette Brogniez, Jacqueline Lenoble, Jacqueline Lenoble, Didier Ramon, Didier Ramon, R. Ramananaherisoa, R. Ramananaherisoa, } "Inversion algorithm and validations of POAM II aerosol products", Proc. SPIE 2311, Atmospheric Sensing and Modelling, (4 January 1995); doi: 10.1117/12.198587; https://doi.org/10.1117/12.198587

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