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Title: Verification of deterministic solar forecasts
Authors: Yang, D
Alessandrini, S
Antonanzas, J
Antonanzas-Torres, F
Badescu, V
Beyer, HG
Blaga, R
Boland, J
Bright, JM 
Coimbra, CFM
David, M
Frimane, Â
Gueymard, CA
Hong, T
Kay, MJ
Killinger, S
Kleissl, J
Lauret, P
Lorenz, E
van der Meer, D
Paulescu, M
Perez, R
Perpiñán-Lamigueiro, O
Peters, IM
Reikard, G
Renné, D
Saint-Drenan, YM
Shuai, Y
Urraca, R
Verbois, H
Vignola, F
Voyant, C
Zhang, J
Issue Date: 1-Jan-2020
Publisher: Elsevier BV
Citation: Yang, D, Alessandrini, S, Antonanzas, J, Antonanzas-Torres, F, Badescu, V, Beyer, HG, Blaga, R, Boland, J, Bright, JM, Coimbra, CFM, David, M, Frimane, Â, Gueymard, CA, Hong, T, Kay, MJ, Killinger, S, Kleissl, J, Lauret, P, Lorenz, E, van der Meer, D, Paulescu, M, Perez, R, Perpiñán-Lamigueiro, O, Peters, IM, Reikard, G, Renné, D, Saint-Drenan, YM, Shuai, Y, Urraca, R, Verbois, H, Vignola, F, Voyant, C, Zhang, J (2020-01-01). Verification of deterministic solar forecasts. Solar Energy. ScholarBank@NUS Repository.
Abstract: © 2020 International Solar Energy Society The field of energy forecasting has attracted many researchers from different fields (e.g., meteorology, data sciences, mechanical or electrical engineering) over the last decade. Solar forecasting is a fast-growing subdomain of energy forecasting. Despite several previous attempts, the methods and measures used for verification of deterministic (also known as single-valued or point) solar forecasts are still far from being standardized, making forecast analysis and comparison difficult. To analyze and compare solar forecasts, the well-established Murphy–Winkler framework for distribution-oriented forecast verification is recommended as a standard practice. This framework examines aspects of forecast quality, such as reliability, resolution, association, or discrimination, and analyzes the joint distribution of forecasts and observations, which contains all time-independent information relevant to verification. To verify forecasts, one can use any graphical display or mathematical/statistical measure to provide insights and summarize the aspects of forecast quality. The majority of graphical methods and accuracy measures known to solar forecasters are specific methods under this general framework. Additionally, measuring the overall skillfulness of forecasters is also of general interest. The use of the root mean square error (RMSE) skill score based on the optimal convex combination of climatology and persistence methods is highly recommended. By standardizing the accuracy measure and reference forecasting method, the RMSE skill score allows—with appropriate caveats—comparison of forecasts made using different models, across different locations and time periods.
Source Title: Solar Energy
ISSN: 0038092X
DOI: 10.1016/j.solener.2020.04.019
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