Chinese Journal of Applied Ecology
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YANG Jin-ming, FAN Wen-yi, ZHAO Ying-hui
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Abstract: Three daily global solar radiation estimation models (A-P model, ThorntonRunning model and model provided by Liu Kequn et al.) were analyzed and compared using data of 13 weather stations from 1982 to 2012 from three northeastern provinces and eastern Inner Mongolia. After crossvalidation analysis, the result showed that mean absolute error (MAE) for each model was 1.71, 2.83 and 1.68 MJ·m-2·d-1 respectively, showing that A-P model and model provided by Liu Kequn et al. which used percentage of sunshine had an advantage over ThorntonRunning model which didn’t use percentage of sunshine. Model provided by Liu Kequn et al. played a good effect on the situation of nonsunshine, and its MAE and bias percentage were 18.5% and 33.8% smaller than those of A-P model, respectively. High precision results could be obtained by using the simple linear model of A-P. A-P model, ThorntonRunning model and model provided by Liu Kequn et al. overvalued daily global solar radiation by 12.2%, 19.2% and 9.9% respectively. MAE for each station varied little with the spatial change of location, and annual MAE decreased with the advance of years. The reason for this might be that the change of observation accuracy caused by the replacement of radiation instrument in 1993. MAEs for rainy days, nonsunshine days and warm seasons of the three models were greater than those for days without rain, sunshine days and cold seasons respectively, showing that different methods should be used for different weather conditions on estimating solar radiation with meteorological elements.
YANG Jin-ming, FAN Wen-yi, ZHAO Ying-hui. Comparison of three daily global solar radiation models.[J]. Chinese Journal of Applied Ecology.
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URL: https://www.cjae.net/EN/abstract/abstract11455.shtml
https://www.cjae.net/EN/Y2014/V25/I8/2304