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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 12 — Apr. 20, 2006
  • pp: 2786–2795

Computationally efficient method for retrieving aerosol optical depth from ATSR-2 and AATSR data

William M. F. Grey, Peter R. J. North, and Sietse O. Los  »View Author Affiliations

Applied Optics, Vol. 45, Issue 12, pp. 2786-2795 (2006)

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We present a robust and computationally efficient method for retrieving aerosol optical depth (AOD) from top-of-atmosphere ATSR-2 (Along-Track Scanning Radiometer) and AATSR (Advanced ATSR) reflectance data that is formulated to allow retrieval of the AOD from the 11 year archive of (A)ATSR data on the global scale. The approach uses a physical model of light scattering that requires no a priori information on the land surface. Computational efficiency is achieved by using precalculated lookup tables (LUTs) for the numerical inversion of a radiative-transfer model of the atmosphere. Estimates of AOD retrieved by the LUT approach are tested on AATSR data for a range of global land surfaces and are shown to be highly correlated with sunphotometer measurements of the AOD at 550   nm . (Pearson's correlation coefficient r 2 is 0.71.)

© 2006 Optical Society of America

OCIS Codes
(280.1100) Remote sensing and sensors : Aerosol detection
(280.1310) Remote sensing and sensors : Atmospheric scattering
(290.1090) Scattering : Aerosol and cloud effects

Original Manuscript: July 18, 2005
Revised Manuscript: September 20, 2005
Manuscript Accepted: November 16, 2005

William M. F. Grey, Peter R. J. North, and Sietse O. Los, "Computationally efficient method for retrieving aerosol optical depth from ATSR-2 and AATSR data," Appl. Opt. 45, 2786-2795 (2006)

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