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Proceedings Paper

Aerosol single-scattering albedo estimated from NOAA-14 AVHRR measurements: case studies over Brazil
Author(s): Xiang Li; Sundar A. Christopher; Jianglong Zhang; Joyce Chou; Ronald M. Welch
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Paper Abstract

Using NOAA-14 AVHRR satellite imagery and ground-based aerosol optical thickness ((tau) ) measurements, the single scattering albedo ((omega) 0) of biomass burning aerosols is estimated for selected days during the Smoke, Clouds and Radiation- Brazil (SCAR-B) experiment held in Brazil during 1995. The retrieved average aerosol single scattering albedos at 0.55 micrometer over the study areas range between 0.83 to 0.92 which is in good agreement with in situ measurements and previous studies. The uncertainty in the retrieved (omega) 0 due to the uncertainties in clear sky albedos and observed AVHRR reflectance is examined. When (tau) at 0.55 micrometer is smaller than 1.0, the retrieved (omega) 0 is sensitive to the assumed clear sky albedo values. When (tau) at 0.55 micrometer is larger than 2.0 , the retrieved (omega) 0 is less sensitive to clear sky albedos. This study shows that when ground-based aerosol (tau) is available, (omega) 0 can be retrieved to within 0.06 which could then be used to characterize biomass burning aerosols in radiative transfer calculations.

Paper Details

Date Published: 20 October 1999
PDF: 10 pages
Proc. SPIE 3756, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research III, (20 October 1999); doi: 10.1117/12.366393
Show Author Affiliations
Xiang Li, Univ. of Alabama in Huntsville (United States)
Sundar A. Christopher, Univ. of Alabama in Huntsville (United States)
Jianglong Zhang, Univ. of Alabama in Huntsville (United States)
Joyce Chou, Univ. of Alabama in Huntsville (United States)
Ronald M. Welch, Univ. of Alabama in Huntsville (United States)


Published in SPIE Proceedings Vol. 3756:
Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research III
Allen M. Larar, Editor(s)

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