NDLI: Theoretical Basis for Retrievals of Irregular-Particle Collections in the Atmosphere

Content Provider	IEEE Xplore Digital Library
Author	Kwo-Sen Kuo Smith, E.A. Qingyuan Han
Copyright Year	2008
Description	Author affiliation: Dept. of Atmos. Sci., Univ. of Alabama in Huntsville, Huntsville, AL (Qingyuan Han) \|\| Goddard Earth Sci. & Technol. Center, Caelum Res. Corp., Rockville, MD (Kwo-Sen Kuo) \|\| Lab. for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, MD (Smith, E.A.)
Abstract	The retrieval of water cloud microphysics involving ensembles of spherical droplets has been firmly established on a solid theoretical foundation by using liquid water content, effective radius, and effective variance as characterizing parameters for the scattering properties of these ensembles. However, there is no such solid theoretical foundation for the retrieval of non-spherical or irregular hydrometeors. Based on scattering calculations performed on realistic crystals generated from an innovative numerical crystal growth model, it is found that, under the constraint of a fixed particle volume distribution, the single-scattering properties derived from ensembles of irregular particles made up with the same set of crystal habits are nearly invariant, if they also have at the same time the same total volume-to-surface and total volume-to-mean-projected-area ratios. Therefore we suggest the use of two effective radii, i.e effective projected-area radius and effective surface area radius, together with ice water content and particle volume distribution, as characterizing parameters for the scattering properties of particulate ensembles composed of non-spherical or irregular ice crystals.
File Size	430504
File Format	PDF
ISBN	9781424428076
DOI	10.1109/IGARSS.2008.4780127
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atmosphere Water Particle scattering Solids Scattering parameters Ice Content based retrieval Clouds Crystals Numerical models ice cloud single scattering non-spherical particle irregular particle hydrometeor retrieval
Content Type	Text
Resource Type	Article

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