Articles | Volume 14, issue 3
Research article
22 Mar 2021
Research article |  | 22 Mar 2021

Relative sky radiance from multi-exposure all-sky camera images

Juan C. Antuña-Sánchez, Roberto Román, Victoria E. Cachorro, Carlos Toledano, César López, Ramiro González, David Mateos, Abel Calle, and Ángel M. de Frutos

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Cited articles

Alonso-Montesinos, J., Batlles, F. J., and Portillo, C.: Solar irradiance forecasting at one-minute intervals for different sky conditions using sky camera images, Energ. Convers. Manage., 105, 1166–1177, 2015. 
Antuña-Sánchez, J. C., Roman, R., Bosch, J. L., Toledano, C., Mateos, D., González, R., Cachorro, V., and de Frutos, A.: ORION software tool for the geometrical calibration of all-sky cameras, in preparation, 2021. 
Barbieri, F., Rajakaruna, S., and Ghosh, A.: Very short-term photovoltaic power forecasting with cloud modeling: A review, Renew. Sust. Energ. Rev., 75, 242–263, 2017. 
Bennouna, Y. S., Cachorro, V. E., Torres, B., Toledano, C., Berjón, A., De Frutos, A. M., and Coppel, I. A. F.: Atmospheric turbidity determined by the annual cycle of the aerosol optical depth over north-center Spain from ground (AERONET) and satellite (MODIS), Atmos. Environ., 67, 352–364, 2013. 
Cachorro, V. E., Burgos, M. A., Mateos, D., Toledano, C., Bennouna, Y., Torres, B., de Frutos, Á. M., and Herguedas, Á.: Inventory of African desert dust events in the north-central Iberian Peninsula in 2003–2014 based on sun-photometer–AERONET and particulate-mass–EMEP data, Atmos. Chem. Phys., 16, 8227–8248,, 2016. 
Short summary
This paper presents a new technique to exploit the potential of all-sky cameras. The sky radiance at three effective wavelengths is calculated and compared with alternative measurements and simulated data. The proposed method will be useful for the retrieval of aerosol and cloud properties.