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Proceedings Paper

Measurements of direct and global UV spectra under varying turbidity
Author(s): Mario Blumthaler; Martin Huber; Walter Ambach
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Paper Abstract

Spectral measurements of solar ultraviolet irradiance carried out near Thessaloniki, Greece, are analyzed with respect to very strong variations of aerosol optical depth while the other influencing parameters are about constant. When aerosol optical depth is increased about twofold, global UV irradiance (from sun and sky) decreases less than 10%. In contrast, direct irradiance (from sun only) is reduced about twofold. If spectral measurements of global irradiance only are made, it is not possible to distinguish between situations with highly different aerosol contents. Measurements of both, global and direct irradiance, appreciate additional information to adapt radiation transfer models to actual atmospheric aerosol conditions.

Paper Details

Date Published: 2 November 1993
PDF: 4 pages
Proc. SPIE 2049, Atmospheric Radiation, (2 November 1993); doi: 10.1117/12.163511
Show Author Affiliations
Mario Blumthaler, Institute of Medical Physics (Austria)
Martin Huber, Institute of Medical Physics (Austria)
Walter Ambach, Institute of Medical Physics (Austria)

Published in SPIE Proceedings Vol. 2049:
Atmospheric Radiation
Knut H. Stamnes, Editor(s)

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