Publication Date:
2018-01-02
Description:
From May 25th to June 5th 2015, the X Regional intercomparison campaign of the Brewer Calibration Center – Europe (RBCC-E) was held at El Arenosillo atmospheric sounding station of the Instituto Nacional de Técnica Aeroespacial (INTA). This campaign was a joint effort of COST Action ES1207 EUBREWNET and the Area of Instrumentation and Atmospheric Research of INTA. Twenty one Brewer instruments from eleven countries participated and their ozone and solar 5 UV irradiance calibrations were performed, in the latter case using the traveling reference standard QASUME instrument of the World Radiation Center for UV (WRC-UV). This work shows a general overview of the ozone comparison focused on the correction of the stray light effect for the single- monochromator Brewer spectrophotometer, derived from the comparison with a reference double-monochromator Brewer instrument. At the beginning of the campaign, 16 out of the 21 participating Brewer instruments (76 %) agreed within better 10 than ±1 %, and 10 instruments (50 %) agreed within better than ±0.5 %. After applying the final calibration that included the stray light correction, all working instruments agreed at the ±0.5 % level.
Electronic ISSN:
1680-7375
Topics:
Geosciences