title: Inherent and apparent scattering properties of coated or uncoated spheres embedded in an absorbing host medium.
abstract: The conventional Lorenz-Mie formalism is extended to the case for a coated sphere embedded in an absorbing medium. The apparent and inherent scattering cross sections of a particle, derived from the far field and near field, respectively, are different if the host medium is absorptive. The effect of absorption within the host medium on the phase-matrix elements associated with polarization depends on the dielectric properties of the scattering particle. For the specific cases of a soot particle coated with a water layer and an ice sphere containing an air bubble, the phase-matrix elements -P12/P11 and P33/P11 are unique if the shell is thin. The radiative transfer equation for a multidisperse particle system embedded within an absorbing medium is discussed. Conventional multiple-scattering computational algorithms can be applied if scaled apparent single-scattering properties are applied.
authors.affiliation: Department of Atmospheric Sciences, Texas A&M University, College Station 77843, USA. pyang@ariel.met.tamu.edu
authors.forename: Ping
authors.initials: P
authors.lastname: Yang
authors.forename: Bo-Cai
authors.initials: BC
authors.lastname: Gao
authors.forename: Warren J
authors.initials: WJ
authors.lastname: Wiscombe
authors.forename: Michael I
authors.initials: MI
authors.lastname: Mishchenko
authors.forename: Steven E
authors.initials: SE
authors.lastname: Platnick
authors.forename: Hung-Lung
authors.initials: HL
authors.lastname: Huang
authors.forename: Bryan A
authors.initials: BA
authors.lastname: Baum
authors.forename: Yong X
authors.initials: YX
authors.lastname: Hu
authors.forename: Dave M
authors.initials: DM
authors.lastname: Winker
authors.forename: Si-Chee
authors.initials: SC
authors.lastname: Tsay
authors.forename: Seon K
authors.initials: SK
authors.lastname: Park