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. Discuss. J1 - ACPD VL - 7 IS - 5 SP - 13989 EP - 14010 Y1 - 2007/09/28 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/7/13989/2007/ L1 - http://www.atmos-chem-phys-discuss.net/7/13989/2007/acpd-7-13989-2007.pdf ER -