Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 8 18 2008 10.5194/acp-8-5535-2008 http://www.atmos-chem-phys.net/8/5535/2008/ http://www.atmos-chem-phys.net/8/5535/2008/acp-8-5535-2008.html http://www.atmos-chem-phys.net/8/5535/2008/acp-8-5535-2008.pdf 5535 5550 2008-09-17 Comparison of ground-based Brewer and FTIR total column O₃ monitoring techniques M. Schneider matthias.schneider@imk.fzk.de A. Redondas F. Hase C. Guirado T. Blumenstock E. Cuevas IMK-ASF, Forschungszentrum und Universität Karlsruhe, Karlsruhe, Germany Centro de Investigación Atmosférico de Izaña, Agencia Estatal de Meteorología, Spain We compare the currently most precise, ground-based total O₃ measurement techniques: Brewer and FTIR. We give an overview of the similarities and the differences between the measurements and the retrieval approaches of both experiments. 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