Validation of ground-based visible measurements of total ozone by comparison with Dobson and Brewer spectrophotometers

P. Peeters, H.K. Roscoe, H. De Backer, A.E. Jones, L. Bartlett, G. Vaughan, F. Goutail, J.P. Pommereau, E. Kyro, C. Wahlstrom, G. Braathen and P.C. Simon