Microwave radiative transfer intercomparison study for 3-D dichroic media

Three different numerical methods capable of solving the radiative transfer of microwave radiation within 3-D dichroic media are compared. A case study, represented by an intense rain shaft populated by perfectly oriented oblate raindrops, is analysed in detail, including a discussion of the behavio...

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Bibliographic Details
Published in:Journal of quantitative spectroscopy & radiative transfer 2007-05, Vol.105 (1), p.55-67
Main Authors: Battaglia, A., Davis, C.P., Emde, C., Simmer, C.
Format: Article
Language:English
Subjects:
3-Deffects
Dichroic media
Microwave radiative transfer
Polarization
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Summary:Three different numerical methods capable of solving the radiative transfer of microwave radiation within 3-D dichroic media are compared. A case study, represented by an intense rain shaft populated by perfectly oriented oblate raindrops, is analysed in detail, including a discussion of the behaviour of all four Stokes components. Results demonstrate an acceptable agreement between all Monte Carlo methods. The method based on a discrete ordinates scheme agrees only qualitatively with the Monte Carlo outputs. Because of its lower computational cost the backward Monte Carlo technique based on importance sampling represents the most efficient way to face passive microwave radiative transfer problems related to optically thick 3-D structured clouds including non-spherical preferentially oriented hydrometeors.
ISSN:0022-4073
1879-1352
DOI:10.1016/j.jqsrt.2006.09.017