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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 12 — Apr. 20, 2008
  • pp: 1995–2003

Dust absorption averaged over the Sahara inferred from moderate resolution imaging spectroradiometer

Mayumi Yoshida and Hiroshi Murakami  »View Author Affiliations


Applied Optics, Vol. 47, Issue 12, pp. 1995-2003 (2008)
http://dx.doi.org/10.1364/AO.47.001995


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Abstract

We estimated the average dust single scattering albedo ( ω 0 ) over the Sahara using four years of moderate resolution imaging spectroradiometer data. The method employed is based on the theory that the critical surface reflectance ( ρ c ) for which the reflectance at the top-of-the-atmosphere is not influenced by the variability of dust optical thickness depends on ω 0 . The average dust absorption over the Sahara was estimated to be smaller than that previously reported in the literature, and this may be causing the cooling of the climate system. Our method enables one to estimate ω 0 from data with a variety of aerosol optical thickness values using samples in the vicinity of ρ c . Use of satellite data over large areas and for long periods enables quantification of the average dust absorption over the entire Sahara.

© 2008 Optical Society of America

OCIS Codes
(010.1110) Atmospheric and oceanic optics : Aerosols
(280.1100) Remote sensing and sensors : Aerosol detection
(010.5620) Atmospheric and oceanic optics : Radiative transfer
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: December 6, 2007
Revised Manuscript: March 16, 2008
Manuscript Accepted: March 17, 2008
Published: April 11, 2008

Citation
Mayumi Yoshida and Hiroshi Murakami, "Dust absorption averaged over the Sahara inferred from moderate resolution imaging spectroradiometer," Appl. Opt. 47, 1995-2003 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-12-1995

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