Modelling daily topographic solar radiation without site-specific hourly radiation data (CROSBI ID 81549)
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Antonić, Oleg
engleski
Modelling daily topographic solar radiation without site-specific hourly radiation data
This paper proposes a model to estimate absolute values of daily solar radiation intercepted by topographic surface, without site-specific hourly radiation data. Instead, daily amounts of global and diffuse radiation at the horizontal surface under unobstructed sky are used. These amounts can be simply and accurately estimated (as monthly averages) in terms of latitude, elevation and relevant but easily accesible climatic parameters. Hourly values of direct irradiance are substituted here by the hourly portions of the unknown daily total as a function of actual and daily maximum solar elevation. Presented approach simplifies ecological application of the topographic solar radiation models, especially for research of the spatial distribution of vegetation and ecosystem types.
Digital elevation; Irradiance; Local climate; Stochastical model; Sun flux; Topography
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