Thuillier et al. (Solar Phys.290, 1581, 2015) article compares ATLAS-3 reference composite solar spectral irradiance (SSI) with more recent spatial measurements, as well as ground-based ones, including IRSPERAD. With respect to the IRSPERAD spectrum of Bolsée et al. (Solar Phys.289, 2433, 2014), Thuillier et al. (2015) presents an analysis based on a set of meteorological parameters retrieved at the moment of the respective ground-based campaign. This comment is intended to give a new insight to the said analysis which is based upon revised values of the meteorological parameters incorrectly used in Thuillier et al. (2015).