Non-spherical aerosol retrieval method employing light scattering by spheroids

Details Non-spherical aerosol retrieval method employing light scattering by spheroids Non-spherical aerosol retrieval method employing light scattering by spheroids

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29j..54d&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 10, pp. 54-1, CiteID 1415, DOI 10.1029/2001GL014506

Physics

Geophysics

68

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Exploration Geophysics: Remote Sensing, Exploration Geophysics: Instruments And Techniques

Scientific paper

Numerous studies indicate the need to account for particle non-sphericity in modeling the optical properties of dustlike aerosols. The methods for simulating the scattering of light by various non-spherical shapes have rapidly evolved over the last two decades. However, the majority of aerosol remote-sensing retrievals still rely on the Mie theory because retrievals accounting for particle non-sphericity are not as well defined methodologically and are demanding computationally. We propose a method for the retrieval of the optical properties of non-spherical aerosol based on the model of a shape mixture of randomly oriented polydisperse spheroids. This method is applied to angular and spectral radiation measurements from the Aerosol Robotic Network (AERONET) in locations influenced by desert dust. Comparisons with Mie-based retrievals show a significant improvement in dust-particle phase functions, size distributions, and refractive indices.

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