The first Spanish calibration campaign of ultraviolet broad-band radiometer was carried out at the “El Arenosillo” INTA station in Huelva (Spain), from 20 August to 15 September 2007. This campaign was organized by Spanish Institute of Aerospace Technology (INTA) and University of Extremadura with the colaboration of Spanish Institute of Meteorology (INM).
In all, 22 broad-band UV instruments from 13 institutions took part in this important event.
