Trends of ozone total columns and vertical distribution from FTIR observations at eight NDACC stations around the globe

T. Blumenstock, M. Coffey, Q. Errera, O. Garcia, N. B. Jones, J. W. Hannigan, F. Hase, B. Liley, E. Mahieu, J. Mellqvist, J. Notholt, M. Palm, G. Persson, M. Schneider, C. Servais, D. Smale, L. Thalix, and M. De Maziere