Variability and trends in surface solar spectral ultraviolet irradiance in Italy: on the influence of geopotential height and lower-stratospheric ozone. - Fountoulakis, Ilias; Diémoz, Henri; Siani, Anna Maria; di Sarra, Alcide; Meloni, Daniela; Sferlazzo, Damiano M. (Atmospheric Chemistry & Physics, 2021)