<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The fluctuation of solar radiation at ground level represents a challenge in modeling the time series of solar irradiance. A procedure for the quantification of the instability of the solar radiative regime is reported. This procedure is based on the clearness index, as the ratio of the horizontal solar irradiance measured at ground level and the estimated one at extraterrestrial level. New quantities for classifying the days from the radiative stability point of view are being introduced. A procedure for classifying days according to their stability regime as stable, variable and unstable is presented.</p></abstract>

The fluctuation of solar radiation at ground level represents a challenge in modeling the time series of solar irradiance. A procedure for the quantification of the instability of the solar radiative regime is reported. This procedure is based on the clearness index, as the ratio of the horizontal solar irradiance measured at ground level and the estimated one at extraterrestrial level. New quantities for classifying the days from the radiative stability point of view are being introduced. A procedure for classifying days according to their stability regime as stable, variable and unstable is presented.

Quantification of the Solar Radiative Regime Variability Based on the Clearness Index

Annals of West University of Timisoara - Physics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The fluctuation of solar radiation at ground level represents a challenge in modeling the time series of solar irradiance. A procedure for the quantification...

Quantification of the Solar Radiative Regime Variability Based on the Clearness Index

Data publikacji: 23 paź 2017

Zakres stron: 13 - 17

Otrzymano: 25 wrz 2016

Przyjęty: 30 lis 2016

DOI: https://doi.org/10.1515/awutp-2016-0003

Słowa kluczowe
Clearness index, solar radiation variability

© 2016 Sergiu Lucaciu et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Quantification of the Solar Radiative Regime Variability Based on the Clearness Index

Data publikacji: 23 paź 2017

Zakres stron: 13 - 17

Otrzymano: 25 wrz 2016

Przyjęty: 30 lis 2016

DOI: https://doi.org/10.1515/awutp-2016-0003

Słowa kluczoweClearness index, solar radiation variability

© 2016 Sergiu Lucaciu et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Słowa kluczowe
Clearness index, solar radiation variability