The effects of non-sphericity on geostationary satellite retrievals of dust aerosols

Details The effects of non-sphericity on geostationary satellite retrievals of dust aerosols The effects of non-sphericity on geostationary satellite retrievals of dust aerosols

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30asc12w&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 24, pp. ASC 12-1, CiteID 2293, DOI 10.1029/2003GL018697

Physics

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Atmospheric Composition And Structure: Pollution-Urban And Regional (0305), Structural Geology: Remote Sensing

Scientific paper

Using data collected during the Puerto Rico Dust Experiment (PRIDE), we examine the effect of non-spherical phase functions on dust aerosol retrievals from geostationary satellites. We utilize a statistical model based on Scanning Electron Micrograph (SEM) analysis of individual dust particles. Using T-matrix calculations and assuming that dust particles are randomly-orientated oblate spheroids we compute the dust phase function and scattering properties. Although the non-spherical function developed in this study compares well with the synthetic non-spherical phase functions [Liu et al., 2003], new retrievals using the non-spherical phase function only show slight improvement at scattering angles (Θ) from 110° ~ 150°, and become worse for Θ between 150° ~ 170°. However the retrievals are greatly improved at all angles when retrieval algorithms account for the combined effect of both spherical and non-spherical phase functions.

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