TY - JOUR A1 - Krüger, K. A1 - Tegtmeier, S. A1 - Rex, M. T1 - Variability of residence time in the Tropical Tropopause Layer during Northern Hemisphere winter JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 9 IS - 3 SP - 12597 EP - 12614 Y1 - 2009/05/28 PB - Copernicus Publications SN - 1680-7375 UR - http://www.atmos-chem-phys-discuss.net/9/12597/2009/ L1 - http://www.atmos-chem-phys-discuss.net/9/12597/2009/acpd-9-12597-2009.pdf DO - 10.5194/acpd-9-12597-2009 ER -