Janos Vida

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  • I Foyo-Moreno, J Vida, L Alados-Arboledas
  • 1997
Presented here is the first analysis of hourly solar ultraviolet irradiance (290 – 385 nm) and broadband global irradiance data, registered in a radiometric station located in the outskirts of Granada (37.18°N, 3.58°W, 660 m a.m.s.l.), an inland location in southeastern Spain, during a 2-year period. According to the prevailing cloudless conditions, the(More)
The differential chromaticity thresholds of three color stimuli have been determined from metameric matches carried out during the cone-plateau period after photopigment bleaching. The results are compared with some recently published ones [E. Hita, L. Jiménez del Barco, and J. Romero, J. Opt. Soc. Am. A 3, 1203 (1986)] obtained under similar experimental(More)
  • I Foyo-Moreno, J Vida, F J Olmo, L Alados-Arboledas
  • 2000
Since the discovery of the ozone depletion in Antarctic and the globally declining trend of strato-spheric ozone concentration, public and scienti®c concern has been raised in the last decades. A very important consequence of this fact is the increased broadband and spectral UV radiation in the environment and the biological e€ects and heath risks that may(More)
  • I Foyo-Moreno, I Alados, F J Olmo, J Vida, L Alados-Arboledas
  • 1999
Knowledge of ultraviolet radiation is necessary in different applications, in the absence of measurements, this radio-metric ¯ux must be estimated from available parameters. To compute this ¯ux under all sky conditions one must consider the in¯uence of clouds. Clouds are the largest modulators of the solar radiative ¯ux reaching the Earth's surface. The(More)
  • F J Olmo, J Vida, I Foyo-Moreno, J Tovar, L Alados-Arboledas
  • 1999
Knowledge of the partition of global solar irradiance in its diffuse and direct beam components is required in different areas of applied meteorology. In the absence of solar irradiance measurements parametric approaches have to be used instead. In the present work, the parametric CPCR2 model has been analysed at Granada (37.18 N, 3.58 W, 660 m a.m.s.l), an(More)
  • F J Olmo, J Vida, I Foyo, Y Castro-Diez, L Alados-Arboledas
  • 1998
Knowledge of the radiation components incoming at a surface is required in energy balance studies, technological applications such as renewable energy and in local and large-scale climate studies. Experimental data of global irradiance on inclined planes recorded at Granada (Spain, 37.08°N, 3.57°W) have been used in order to study the pattern of the angular(More)
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