Articles | Volume 14, issue 3
Research article
23 Mar 2021
Research article |  | 23 Mar 2021

The world Brewer reference triad – updated performance assessment and new double triad

Xiaoyi Zhao, Vitali Fioletov, Michael Brohart, Volodya Savastiouk, Ihab Abboud, Akira Ogyu, Jonathan Davies, Reno Sit, Sum Chi Lee, Alexander Cede, Martin Tiefengraber, Moritz Müller, Debora Griffin, and Chris McLinden

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Cited articles

Antón, M., López, M., Vilaplana, J. M., Kroon, M., McPeters, R., Bañón, M., and Serrano, A.: Validation of OMI-TOMS and OMI-DOAS total ozone column using five Brewer spectroradiometers at the Iberian peninsula, J. Geophys. Res., 114, D14307,, 2009. 
Bais, A. F., Zerefos, C. S., and McElroy, C.: Solar UVB measurements with the double- and single-monochromator Brewer ozone spectrophotometers, Geophys. Res. Lett., 23, 833–836, 1996. 
Bass, A. M. and Paur, R. J.: The ultraviolet cross-sections of ozone: I. The measurements, in: Atmospheric Ozone, Springer, Germany, 606–610, 1985. 
Bhartia, P. K. and Wellemeyer, C. W.: OMI TOMS-V8 Total O3 algorithm, algorithm theoretical baseline document: OMI ozone products, NASA Goddard Space Flight Center, Greenbelt, Md., 2002. 
Brewer, A. W.: A replacement for the Dobson spectrophotometer?, Pure Appl. Geophys., 106, 919–927, 1973. 
Short summary
The Brewer spectrophotometer is one of the main instruments for measurements of atmospheric total column ozone. The global Brewer network largely relies on the world reference instruments (the Brewer triad) operated by Environment and Climate Change Canada since the early 1980s. This study provides an updated assessment (1999–2019) of the reference instrument performance, in terms of random uncertainties and long-term stability.