Analysis for BrO in zenith-sky spectra: An intercomparison exercise for analysis improvement

M. Van Roozendael, P. V. Johnston, A. Richter, T. Wagner, D. W. Arlander, J. P. Burrows, D. J. Fish, R. Jones, K. K. Tørnkvist, J.-C. Lambert, K. Pfeilsticker, and I. Pundt