Particle characteristics of PSCs inferred from polarimetric experiment

Anna Maslowska; Maurice Herman

doi:10.1117/12.196699

23 December 1994 Particle characteristics of PSCs inferred from polarimetric experiment

Anna Maslowska, Maurice Herman

Proceedings Volume 2309, Passive Infrared Remote Sensing of Clouds and the Atmosphere II; (1994) https://doi.org/10.1117/12.196699
Event: Satellite Remote Sensing, 1994, Rome, Italy

Abstract

Balloon borne observations of polar stratospheric cloud (PSC) were made in Kiruna on February 4, 1990 during CHEOPS 3 campaign. The measurements of radiance and polarization of the scattered sunlight in the horizontal plane, for the whole range of scattering angles in two polarimeter channels (850 and 1650 nm) were performed at different altitudes of the balloon. The phase function behavior indicated that the top of the PSC (at the altitude about 24 km) was composed of rather large, micron sized particles but difficulties in retrieving the measurements, especially the polarization ratios, from calculations for spherical particles suggested that they had irregular shapes. The purpose of this study is to retrieve the scattering characteristics of the top of PSC assuming the nonspherical particle shape. The calculations have been performed using the discrete dipole approximation. From among the shapes studied the best agreement has been obtained for rather elongated spheroids.

Citation Download Citation

Anna Maslowska and Maurice Herman "Particle characteristics of PSCs inferred from polarimetric experiment", Proc. SPIE 2309, Passive Infrared Remote Sensing of Clouds and the Atmosphere II, (23 December 1994); https://doi.org/10.1117/12.196699

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