Long-term evolution of upper stratospheric ozone at selected stations of the Network for the Detection of Stratospheric Change (NDSC)

H. Claude, F. Schönenborn, I. McDermid, T. Leblanc, S. Godin, T. Song, D. Swart, Y. Meijer, G. Bodeker, B. Connor, N. Kämpfer, K. Hocke, Y. Calisesi, N. Schneider, J. Noe, A. Parrish, I Boyd, C. Brühl, B. Steil, M. Giorgetta, E. Manzini, L. Thomasson, J. Zawodny, M. McCormick, J. Russel III, P. Bhartia, R. Stolarski, S. Hollandsworth-Frith