HR: 0800h
AN: A41B-0446    [Abstracts]
TI: Linearization of Monte Carlo vector radiative transfer model MCC++ for aerosol retrieval
AU: * Postylyakov, O V
EM: ovp@ifaran.ru
AF: A.M.Obukhov Institute of Atmospheric Physics, Pyzhevsky per.3, Moscow, 119017, Russian Federation
AB: Linearized radiative transfer models are characterized by capability to calculate directly and efficiently the weighting functions used in retrieval algorithms, but not only radiance. Their application to interpretation of observations improves accuracy of retrieval of atmospheric gases, properties of aerosol and clouds due to proper calculation of multiple scattering. The model MCC++ describes transfer of the polarized light in the spherical-shell atmosphere. The model MCC++ was previously linearized to calculate derivatives with respect to the volume absorption coefficient, the Lambertian and BRDF surface properties. A new version of the model was linearized to provide derivatives of four Stokes parameters with respect to the aerosol volume scattering coefficient. The developed method of calculation allows insignificantly increase time of calculation in comparison with calculation of four Stokes parameters only. The deduced representations of derivatives improve ability of the RT model to investigation of the aerosol retrieval capability of different types of satellite measurements. Formalizm for Monte Carlo calculation of the derivatives and examples of numerically simulated aerosol measurements are presented.
UR: http://postylyakov.narod.ru/
DE: 0360 Radiation: transmission and scattering
DE: 0394 Instruments and techniques
DE: 0520 Data analysis: algorithms and implementation
DE: 0545 Modeling (4255)
DE: 3359 Radiative processes
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting