A new method for estimating UV fluxes at ground level in cloud-free conditions

摘要: A new method has been developed to estimate the global and direct solar irradiance in UV-A UV-B, at ground level cloud-free conditions. It is based on a resampling technique applied results of k -distribution correlated- approximation Kato et al. (1999) over UV band. Its inputs are aerosol properties, total column ozone that produced by Copernicus Atmosphere Monitoring Service (CAMS). The estimates from this have compared instantaneous measurements irradiances made conditions five stations high latitudes various climates. For or irradiance, bias ranges between −0.8 W m −2 (−3 % mean all data) −0.2 W m (−1%). root square error (RMSE) 1.1 W m (6 %) 1.9 W m (9 %). coefficient determination R 2 greater than 0.98. for UV-B −0.04 W m (−4 %) 0.08 W m (+13 %) RMSE 0.1 W m (between 12 % 18 %). 0.97 0.99. This work demonstrates quality proposed combined with CAMS products. Improvements, especially modelling reflectivity Earth's surface region, necessary prior its inclusion into an operational tool.