NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Satellite measurements of large-scale air pollution - MethodsA technique for deriving large-scale pollution parameters from NIR and visible satellite remote-sensing images obtained over land or water is described and demonstrated on AVHRR images. The method is based on comparison of the upward radiances on clear and hazy days and permits simultaneous determination of aerosol optical thickness with error Delta tau(a) = 0.08-0.15, particle size with error + or - 100-200 nm, and single-scattering albedo with error + or - 0.03 (for albedos near 1), all assuming accurate and stable satellite calibration and stable surface reflectance between the clear and hazy days. In the analysis of AVHRR images of smoke from a forest fire, good agreement was obtained between satellite and ground-based (sun-photometer) measurements of aerosol optical thickness, but the satellite particle sizes were systematically greater than those measured from the ground. The AVHRR single-scattering albedo agreed well with a Landsat albedo for the same smoke.
Document ID
19900053185
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kaufman, Yoram J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ferrare, Richard A.
(NASA Goddard Space Flight Center Greenbelt; Maryland, University, College Park, United States)
Fraser, Robert S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
June 20, 1990
Publication Information
Publication: Journal of Geophysical Research
Volume: 95
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
90A40240
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available