Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 7 6 2007 10.5194/acpd-7-17873-2007 http://www.atmos-chem-phys-discuss.net/7/17873/2007/ http://www.atmos-chem-phys-discuss.net/7/17873/2007/acpd-7-17873-2007.html http://www.atmos-chem-phys-discuss.net/7/17873/2007/acpd-7-17873-2007.pdf 17873 17892 2007-12-13 Improving the solar zenith angle dependence of broadband UV radiometers calibration M. L. Cancillo mcf@unex.es A. Serrano M. Antón J. A. García J. M. Vilaplana Departamento de Física, Universidad de Extremadura, 06071 Badajoz, Spain INTA Departamento de Observación de la Tierra, Teledetección y Atmósfera, ESAt, "El Arenosillo", Huelva, Spain This paper focusses on the proposal of a new method for the calibration of broadband ultraviolet radiometers. The advantage of the method proposed is the accurate modelling of the dependence on the solar zenith angle. 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