G. Bernhard and C. Booth (Biospherical Instr.) – Measurements of UV spectroradiometer irradiance, with an SUV-100 and GUV-511, initiated in November 1988. Operations ceased at the end of 2008 due to funding termination.
M. Yela, O. Puentedura and M. Navarro (INTA) – Zenith measurements of column NO2 since 1994 with a grating scanning monochromator. Since 2015, MAX-DOAS system has been operating. Scanning system will continue to take measurements until 2020 in order to overlap with those by the MAX-DOAS systems. In 2017 joined NDACC. Data from 1994 to 2016 not yet archived.
INTA: Instituto Nacional de Technica Aerospacial
SMN: Servicio Meteorológico Nacional