NUMERICAL SIMULATION STUDY ON IMPROVEMENT OF SOLAR RADIATION FORECAST IN WESTERN INNER MONGOLIA REGION UNDER DUSTY CONDITIONS

Han Li&#x02019;na; Xu Li&#x02019;na; Wang Zhinan; Zhao Jiaqi; Hu Ya&#x02019;nan

doi:10.19912/j.0254-0096.tynxb.2025-1081

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (12) : 187-197. DOI: 10.19912/j.0254-0096.tynxb.2025-1081

NUMERICAL SIMULATION STUDY ON IMPROVEMENT OF SOLAR RADIATION FORECAST IN WESTERN INNER MONGOLIA REGION UNDER DUSTY CONDITIONS

Han Li’na¹, Xu Li’na¹, Wang Zhinan², Zhao Jiaqi¹, Hu Ya’nan¹

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Abstract

In spring, the Inner Mongolia region frequently experiences sand and dust weather, characterized by high intensity and extensive coverage, which significantly weakens solar radiation reaching the surface. This study utilizes the WRF-Solar model to optimize and improve solar radiation forecasting under dust conditions in western Inner Mongolia, taking into account the sensitivity of the WRF-Solar parameterization schemes and the impact of aerosols on solar radiation. Preliminary conclusions are as follows： 1） During and after dust events, significant differences are observed among sensitivity experiments of the model, indicating varying sensitivities among different parameterization scheme combinations, which is more conducive to optimizing the model's forecasting performance; 2） Under the influence of moderate and strong dust events, the Lin microphysics scheme and the Betts-Miller-Janjic cumulus convection scheme demonstrate relatively good simulation performance, while the RRTMG longwave and shortwave radiation schemes show superior results in simulating strong dust events. Additionally, the model's simulation performance for strong dust events is found to be better than that for moderate dust events. Under the significant influence of severe and extreme dust events, the Kain-Fritsch cumulus convection scheme can improve solar radiation simulation to some extent; 3） After comprehensive consideration, an optimal combination of parameterization schemes is selected, namely the RRTMG longwave radiation scheme, RRTMG shortwave radiation scheme, Betts-Miller-Janjic cumulus convection scheme, and the aerosol-aware Thompson microphysics scheme; 4） After accounting for the impact of aerosols on solar radiation, the WRF-Solar model exhibits notably improved performance.

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WRF-Solar model / solar radiation / sand and dust weather / sensitivity test / western Inner Mongolia region

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Han Li’na, Xu Li’na, Wang Zhinan, Zhao Jiaqi, Hu Ya’nan. NUMERICAL SIMULATION STUDY ON IMPROVEMENT OF SOLAR RADIATION FORECAST IN WESTERN INNER MONGOLIA REGION UNDER DUSTY CONDITIONS[J]. Acta Energiae Solaris Sinica. 2026, 47(12): 187-197 https://doi.org/10.19912/j.0254-0096.tynxb.2025-1081

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