Comparison of ground-based Brewer and FTIR total O₃ monitoring techniques

M. Schneider (1) , A. Redondas (2) , F. Hase (1) , C. Guirado (2) , T. Blumenstock (1) , E. Cuevas (2)

1 IMK-ASF - Institut für Meteorologie und Klimaforschung - Atmosphärische Spurengase und Fernerkundung
2 Observatorio Atmosférico de Izaña

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. By means of coinciding measurements performed at the Atmospheric Observatory of Izaña from 2005 to 2007 we show that the small differences between both techniques are in excellent agreement with the theoretical predictions. Our empirical study confirms that both FTIR and Brewer measurements are able to continuously monitor total O₃ amounts with a precision of better than 0.4%.

Domaines: Océan, Atmosphère

M. Schneider, A. Redondas, F. Hase, C. Guirado, T. Blumenstock, et al.. Comparison of ground-based Brewer and FTIR total O₃ monitoring techniques. Atmospheric Chemistry and Physics Discussions, 2008, 8 (1), pp.285-325. ⟨hal-00303239⟩