Multiple scattering by aerosols as seen from CALIPSO — a Monte-Carlo modelling study | Zendy

Michael Kahnert | Zendy; Ronald Scheirer | Zendy

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Multiple scattering by aerosols as seen from CALIPSO — a Monte-Carlo modelling study

Author(s) -

Michael Kahnert,

Ronald Scheirer

Publication year - 2019

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.27.033683

Subject(s) - monte carlo method , optics , scattering , atmospheric optics , mie scattering , remote sensing , diffuse sky radiation , forward scatter , light scattering , physics , statistical physics , geology , statistics , mathematics

The impact of multiple scattering (MS) by aerosols on satellite-borne lidar measurements is studied by Monte-Carlo radiative transfer simulations. A total of 48 aerosol scenarios are considered. We find that the frequently used MS correction factor can be parameterized as a function of aerosol size and aerosol optical depth. Its dependencies on vertical distribution and total optical depth can be treated as a random error. We illustrate the use of our parameterization by considering an episode of high sea salt concentrations over the ocean. Neglecting MS, or using a constant value of the MS correction factor, can introduce a negative bias in the computed backscattered power that exceeds the random error in our approach.

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