Estimation of daily global solar irradiation by coupling ground measurements of bright sunshine hours to satellite imagery

Date

2013-09-01

Author

Rusen, Selmin Ener
Hammer, Annette
Akınoğlu, Bülent Gültekin

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In this work, the current version of the satellite-based HELIOSAT method and ground-based linear Angstrom-Prescott type relations are used in combination. The first approach is based on the use of a correlation between daily bright sunshine hours (s) and cloud index (n). In the second approach a new correlation is proposed between daily solar irradiation and daily data of s and n which is based on a physical parameterization. The performances of the proposed two combined models are tested against conventional methods. We test the use of obtained correlation coefficients for nearby locations. Our results show that the use of sunshine duration together with the cloud index is quite satisfactory in the estimation of daily horizontal global solar irradiation. We propose to use the new approaches to estimate daily global irradiation when the bright sunshine hours data is available for the location of interest, provided that some regression coefficients are determined using the data of a nearby station. In addition, if surface data for a close location does not exist then it is recommended to use satellite models like HELIOSAT or the new approaches instead the Angstrom type models.

Subject Keywords

Satellite images, HELIOSAT, Angstrom model, Solar energy, Bright sunshine hour

URI

https://hdl.handle.net/11511/33365

Journal

ENERGY

DOI

https://doi.org/10.1016/j.energy.2013.05.062

Collections

Department of Physics, Article

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Citation Formats

S. E. Rusen, A. Hammer, and B. G. Akınoğlu, “Estimation of daily global solar irradiation by coupling ground measurements of bright sunshine hours to satellite imagery,” ENERGY, pp. 417–425, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33365.