Analysis of POAM II water vapor channels

Pierre Pruvost; Ph. Dubuisson; Colette Brogniez; Jacqueline Lenoble

doi:10.1117/12.198590

4 January 1995 Analysis of POAM II water vapor channels

Pierre Pruvost, Ph. Dubuisson, Colette Brogniez, Jacqueline Lenoble

Author Affiliations +

Proceedings Volume 2311, Atmospheric Sensing and Modelling; (1995) https://doi.org/10.1117/12.198590
Event: Satellite Remote Sensing, 1994, Rome, Italy

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. Two channels are devoted to the retrieval of the water vapor profile, one at 935 nm in the water vapor absorption band, and a nearby channel at 920 nm, almost free of water vapor absorption. The two channels are used in a differential mode to separate the aerosol extinction from the water vapor absorption. The major difficulty to retrieve a water vapor profile from the transmission data, is due to the line structure of the absorption spectrum. Line-by-line models are used as basic benchmarks, and the GEISA and HITRAN models are compared. However the line-by-line models are much too complex to be run at each step in an inversion algorithm; a simple parameterization has been sought, following the method used for SAGE II. Results are presented.

Citation Download Citation

Pierre Pruvost, Ph. Dubuisson, Colette Brogniez, and Jacqueline Lenoble "Analysis of POAM II water vapor channels", Proc. SPIE 2311, Atmospheric Sensing and Modelling, (4 January 1995); https://doi.org/10.1117/12.198590

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