Portable device for characterizing the angular response of UV spectroradiometers.

摘要: This paper introduces a device that was developed to measure the angular response of UV spectroradiometers in field. is designed be used at operating position spectroradiometers; thus derived also includes any effects from imperfect leveling diffuser and corresponds actual operational response. The design characterization results its application on 11 different operate European stations are presented. Various sources uncertainties were identified result combined uncertainty determining response, which ranges between approximately 1.5% 10%, depending incidence angle characteristics diffuser. For instruments, error reporting diffuse irradiance 2% −13%, assuming isotropic distribution downwelling radiances.