Modelowanie dopływu promieniowania słonecznego do obszarów o urozmaiconej rzeźbie terenu w systemach informacji geograficznej
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Date
2016
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Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk
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Abstract
The inflow of solar radiation to the active surface is among the crucial factors determining its
radiation balance and thus the climate conditions. Due to limited research and a multitude of surfaces, the determination
of the spatial distribution of solar radiation on the basis of in situ research is hampered. Therefore
actinometrical models are used to calculate the value of solar irradiance with reference to digital elevation
models. Two actinometrical models were described: r.sun implemented in the GRASS GIS software and the
Area Solar Radiation (ARS) provided in the ArcMap program, a part of the ArcGIS package. A digital elevation
model of the East Carpathian Mountains in Romania was used as entry data for the above described
models and a comparative analysis of the following characteristics was performed: total solar irradiance, direct
irradiance, diffused irradiance and direct daylight duration. It was determined that despite the fact that both
actinometrical models show different values of solar irradiance for the same area, they reflect similar spatial
distributions. While both models are deemed valid tools for calculating solar radiation in mountainous areas,
elementary knowledge of the tools is a must in order to use the results in an informed and responsible way.
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Keywords
solar radiation, geographical information systems, irradiance, irradiation, computer models
Citation
Badania Fizjograficzne, Seria A, Tom 67, 2016, s. 77-97