21 October 2004 UVB and erythemal solar radiation on tilted planes in Valencia, Spain
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Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.590942
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela
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.
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M. J. Marin, E. Sanudo, Maria Pilar Utrillas, Jose Antonio Martinez-Lozano, Fernando Tena, "UVB and erythemal solar radiation on tilted planes in Valencia, Spain", 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; https://doi.org/10.1117/12.590942
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