This ninth intercomparison campaign was a joint exercise of the Regional Brewer Calibration Center for Europe (RBCC-E) and the Arosa Lichtklimatisches Observatorium (LKO) of MeteoSwiss during the period 14-26 July 2014. Six Brewers managed by 11 experts from four countries participated in the campaign (Table 1). The Brewer instruments were compared with the RBCC-E travelling reference Brewer #185 for ozone. The RBCC-E transferred during this intercomparison its own absolute ozone calibration obtained by the Langley method at the Izaña Observatory (IZO). The calibration of the reference instrument, as well as the link to the world triad, is discussed in Section 2.1. All the participating instruments were provided with a provisional calibration at the end of the campaign, which can be considered final calibration constants for most of them. The individual calibration reports are also available online. A calibration history was introduced for those instruments present at previous campaigns, allowing an easy recalculation of the past ozone data.
Collection(s) and Series: GAW Report- No. 224
Format: Digital (Free)