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Applied Optics

Applied Optics


  • Vol. 41, Iss. 15 — May. 20, 2002
  • pp: 2768–2780

Cloud Identification in Atmospheric Trace Molecule Spectroscopy Infrared Occultation Measurements

Brian H. Kahn, Annmarie Eldering, Fredrick W. Irion, Franklin P. Mills, Bhaswar Sen, and Michael R. Gunson  »View Author Affiliations

Applied Optics, Vol. 41, Issue 15, pp. 2768-2780 (2002)

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High-resolution infrared nongas absorption spectra derived from the Atmospheric Trace Molecule Spectroscopy (ATMOS) experiment are analyzed for evidence of the presence of cirrus clouds. Several nonspherical ice extinction models based on realistic size distributions and crystal habits along with a stratospheric sulfate aerosol model are fit to the spectra, and comparisons are made with different model combinations. Nonspherical ice models often fit observed transmission spectra better than a spherical Mie ice model, and some discrimination among nonspherical models is noted. The ATMOS lines of sight for eight occultations are superimposed on coincident geostationary satellite infrared imagery, and brightness temperatures along the lines of sight are compared with retrieved vertical temperature profiles. With these comparisons, studies of two cases of clear sky, three cases of opaque cirrus, and three cases of patchy cirrus are discussed.

© 2002 Optical Society of America

OCIS Codes
(010.1100) Atmospheric and oceanic optics : Aerosol detection
(010.1320) Atmospheric and oceanic optics : Atmospheric transmittance
(010.3920) Atmospheric and oceanic optics : Meteorology
(010.7030) Atmospheric and oceanic optics : Troposphere
(280.1100) Remote sensing and sensors : Aerosol detection
(290.1090) Scattering : Aerosol and cloud effects

Brian H. Kahn, Annmarie Eldering, Fredrick W. Irion, Franklin P. Mills, Bhaswar Sen, and Michael R. Gunson, "Cloud Identification in Atmospheric Trace Molecule Spectroscopy Infrared Occultation Measurements," Appl. Opt. 41, 2768-2780 (2002)

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