WRF-Solar模式对山东太阳总辐射的模拟效果检验

利用专门为太阳能资源评估应用的 WRF-Solar数值模式系统，结合 MODIS 气溶胶光学厚度（AOD550 nm）数据，设置了5种山东区域总辐射模拟方案，使用山东济南、福山、吉县3个太阳辐射站总辐射观测数据，对晴天、阴天、雨天以及四季代表月等逐时总辐射模拟结果进行了对比检验。 结果表明：WRF-Solar数值模式对总辐射模拟能力在晴天和少云天最好，阴雨天较差，四季代表月中，天气过程较少的秋季和冬季模拟效果较好，春季次之，夏季相对较差；晴天和少云天、阴天和雨天以及不考虑天气过程的四季代表月所有日条件下，长、短波辐射方案分别采用RRTMG方案、new Goddard 方案，积云对流参数化方案均采用Grell 3D集合方案，同时使用AOD550 nm的气溶胶数据的总辐射模拟能力最强；WRF-Solar模式中加入 MODIS 气溶胶光学厚度资料后，山东区域晴天总辐射模拟结果明显改善，秋季、冬季代表月亦明显改善，但阴天和雨天总辐射模拟结果改善不明显，低能见度日总辐射模拟结果有所改善。

Performance evaluation of solar irradiance simulation over Shandong using WRF-Solar numerical model

Based on the solar irradiation observational data at 3 stations in Fushan, Jinan and Juxian in Shandong province, and by setting up five solar irradiation simulation schemes combining MODIS aerosol optical thickness (AOD550 nm) data in Shandong area, the simulation performance of WRF-Solar numerical model is analyzed, which can be specially applied to solar resource assessment and applications in different area, different time periods for sunny, cloudy and rainy days, and for months representative of four seasons. The results show that the simulations of solar irradiation are best in sunny and partly cloudy days, and not so good in cloudy and rainy days. The simulations are best in Autumn and Winter when there are less cloudy and rainy days, the secondary is in Spring, and the worst in Summer. The simulations of solar irradiation in sunny days and partly cloudy days are best while using the Rapid Radiative Transfer Model for Global Circulation Models (RRTMG) scheme for longwave and shortwave radiation, Grell 3D ensemble scheme for cumulus parametrization and the MODIS aerosol optical thickness (AOD550 nm) data in WRF-Solar numerical model being considered. The simulations of solar irradiation in all days in months representative of four seasons, regardless of synoptic processes, are best by using the new Goddard scheme for longwave and shortwave radiation, the Grell 3D ensemble scheme for cumulus parametrization and the AOD550 nm data. The simulation effect of solar irradiation in sunny days is improved by adding the AOD550 nm data, but the improvements are not obvious on cloudy and rainy days in Autumn and Winter. In addition, the simulation effect of solar irradiation in low visibility days is improved by adding the AOD550 nm data.