TY - JOUR A1 - Krüger, K. A1 - Tegtmeier, S. A1 - Rex, M. T1 - Long-term climatology of air mass transport through the Tropical Tropopause Layer (TTL) during NH winter JO - Atmos. Chem. Phys. J1 - ACP VL - 8 IS - 4 SP - 813 EP - 823 Y1 - 2008/02/19 PB - Copernicus Publications SN - 1680-7316 UR - http://www.atmos-chem-phys.net/8/813/2008/ L1 - http://www.atmos-chem-phys.net/8/813/2008/acp-8-813-2008.pdf ER -