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Spectral aerosol optical depth and Angstrom parameters in the polluted Athens atmosphere
Authors
C.P. Jacovides Kaltsounides, N.A. Asimakopoulos, D.N. Kaskaoutis, D.G.
Publication date
1 January 2005
Publisher
Abstract
Using ground-based spectral solar extinction data taken in the Athens atmosphere during a field survey, experimental and modeled aerosol optical depths AOD have been retrieved. The Angstrom parameters α and β were derived through spectral extinction curves determined from a log-log plot fit in four spectral intervals, e.g. UV, VIS, UV-VIS and VIS-NIR. The results reveal that exponent α derived in the shorter wavebands, is correlated with β in the VIS-NIR range the correlation is weaker, however. It has also found that α does not depend on the Angstrom law fits, while β does. Retrieved experimental AOD obtained at longer wavelengths exhibits a daily pattern similar to turbidity β by contrast, AOD at shorter wavelengths follows the temporal variation of α. © Springer-Verlag/Wien 2005
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Pergamos : Unified Institutional Repository / Digital Library Platform of the National and Kapodistrian University of Athens
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oai:lib.uoa.gr:uoadl:3017885
Last time updated on 10/02/2023