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Proceedings Paper

UVB and erythemal solar radiation on tilted planes in Valencia, Spain
Author(s): M. J. Marin; E. Sanudo; Maria Pilar Utrillas; Jose Antonio Martinez-Lozano; Fernando Tena
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Paper Abstract

A preliminary analysis of experimental UVB and erythemal solar radiation data measured in Valencia a Mediterranean coastal site in Spain, is made. The data have been recorded by means of four broadband radiometers YES UVB-1 recently installed by the Solar Radiation Group of the University of Valencia. One of them measures global horizontal irradiance. The second one has a shadowband for the measurement of diffuse horizontal irradiance. The other two instruments record global irradiance data on planes inclined 45° alternating North-South and East-West orientation. The results show some differences between UVB irradiation on horizontal and tilted surfaces and also among the different orientations. The irradiance received in horizontal position is higher than on the others planes and the daily maximum value is reached at noon in horizontal, North and South positions whereas on East plane it happens before the noon and after the noon in West orientation. This kind of measurements allows the evaluation of the UV Index corresponding to solar radiation on tilted surfaces with different azimutal angles. The differences between horizontal UV Index and North UV Index are of three units. In contrast on the South is of one unit at the most.

Paper Details

Date Published: 21 October 2004
PDF: 6 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.590942
Show Author Affiliations
M. J. Marin, Univ. de Valencia (Spain)
E. Sanudo, Univ. de Valencia (Spain)
Maria Pilar Utrillas, Univ. de Valencia (Spain)
Jose Antonio Martinez-Lozano, Univ. de Valencia (Spain)
Fernando Tena, Univ. de Valencia (Spain)

Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

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