GAW Report No. 223

Eighth Intercomparison Campaign of the Regional Brewer Calibration Center for Europe (RBCC-E)

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The eighth Regional Brewer Calibration Center for Europe (RBCC-E) intercomparison was held at El Arenosillo Atmospheric Sounding Station of the Instituto Nacional de Técnica Aeroespacial (INTA) during the period 10-20 June 2013. This campaign was organized in collaboration with the Area of Instrumentation and Atmospheric Research of INTA, with the support of the Global Atmosphere Watch (GAW) programme of the World Meteorological Organization (WMO) and a CEOS CALVAL project of the European Space Agency (ESA). A total number of 18 Brewer spectrophotometers from eight countries participated in the intercomparison. These campaigns, with a large number of participant instruments, provide an overview of the current state of ozone measurements being made by the European Brewer network. The instruments were compared with the RBCC-E standard Brewer#183 for ozone and with the European UV reference from the World Radiation Center (QASUME unit) for UV. For this report we used our own calibration constants obtained by Langley plots at IZO. Apart from the RBCC-E standards, two additional reference instruments were present at the campaign: the single-monochromator Brewer #017 (IOS, EC) and the double-monochromator Brewer #158 (K&Z).

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81 p.
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GAW Report No. 223
WMO Programmes