TY - JOUR A1 - Müller, M. A1 - Neuber, R. A1 - Massoli, P. A1 - Cairo, F. A1 - Adriani, A. A1 - Moriconi, M. L. A1 - Di Donfrancesco, G. T1 - Differences in Arctic and Antarctic PSC occurrence as observed by lidar in Ny-Ålesund (79° N, 12° E) and McMurdo (78° S, 167° E) JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 4 IS - 5 SP - 6837 EP - 6866 Y1 - 2004/10/26 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/4/6837/2004/ L1 - http://www.atmos-chem-phys-discuss.net/4/6837/2004/acpd-4-6837-2004.pdf ER -