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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 23 — Aug. 10, 2006
  • pp: 5993–6006

Efficient vector radiative transfer calculations in vertically inhomogeneous cloudy atmospheres

Bastiaan van Diedenhoven, Otto P. Hasekamp, and Jochen Landgraf  »View Author Affiliations


Applied Optics, Vol. 45, Issue 23, pp. 5993-6006 (2006)
http://dx.doi.org/10.1364/AO.45.005993


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Abstract

Accurate radiative transfer calculations in cloudy atmospheres are generally time consuming, limiting their practical use in satellite remote sensing applications. We present a model to efficiently calculate the radiative transfer of polarized light in atmospheres that contain homogeneous cloud layers. This model combines the Gauss–Seidel method, which is efficient for inhomogeneous cloudless atmospheres, with the doubling method, which is efficient for homogeneous cloud layers. Additionally to reduce the computational effort for radiative transfer calculations in absorption bands, the cloud reflection and transmission matrices are interpolated over the absorption and scattering optical thicknesses within the cloud layer. We demonstrate that the proposed radiative transfer model in combination with this interpolation technique is efficient for the simulation of satellite measurements for inhomogeneous atmospheres containing one homogeneous cloud layer. For example, the Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY) measurements in the oxygen A band ( 758 773   nm ) and the Hartley–Huggins ozone band ( 295 335   nm ) with a spectral resolution of 0.4   nm can be simulated for these atmospheres within 1 min on a 2 .8   GHz PC with an accuracy better than 0 .1% .

© 2006 Optical Society of America

OCIS Codes
(010.1310) Atmospheric and oceanic optics : Atmospheric scattering
(280.1310) Remote sensing and sensors : Atmospheric scattering
(290.1090) Scattering : Aerosol and cloud effects
(290.1350) Scattering : Backscattering

History
Original Manuscript: January 4, 2006
Manuscript Accepted: February 17, 2006

Citation
Bastiaan van Diedenhoven, Otto P. Hasekamp, and Jochen Landgraf, "Efficient vector radiative transfer calculations in vertically inhomogeneous cloudy atmospheres," Appl. Opt. 45, 5993-6006 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-23-5993

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