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Applied Optics

Applied Optics


  • Vol. 44, Iss. 22 — Aug. 1, 2005
  • pp: 4785–4790

Monte Carlo approach to identification of the composition of stratospheric aerosols from infrared solar occultation measurements

Alexander Y. Zasetsky and James J. Sloan  »View Author Affiliations

Applied Optics, Vol. 44, Issue 22, pp. 4785-4790 (2005)

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We describe an inversion method for determining the composition, density, and size of stratospheric clouds and aerosols by satellite remote sensing. The method, which combines linear least-squares minimization and Monte Carlo techniques, is tested with pure synthetic IR spectra. The synthetic spectral data are constructed to mimic mid-IR spectra recorded by the Improved Limb Atmospheric Spectrometer (ILAS-I and ILAS-II) instruments, which operate in the solar occultation mode and record numerous polar stratospheric cloud events. The advantages and limitations of the proposed technique are discussed. In brief we find that stratospheric aerosol in the size range from 0.5 to 4.0 μm can be retrieved to an accuracy of 30%. We also show that the chemical composition of common stratospheric aerosols can be determined, whereas identification of their phases from mid-IR satellite remote-sensing data alone appears to be questionable.

© 2005 Optical Society of America

OCIS Codes
(280.1100) Remote sensing and sensors : Aerosol detection
(290.1090) Scattering : Aerosol and cloud effects

Original Manuscript: September 20, 2004
Revised Manuscript: February 15, 2005
Manuscript Accepted: February 15, 2005
Published: August 1, 2005

Alexander Y. Zasetsky and James J. Sloan, "Monte Carlo approach to identification of the composition of stratospheric aerosols from infrared solar occultation measurements," Appl. Opt. 44, 4785-4790 (2005)

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