TY - JOUR A1 - Punge, H. J. A1 - Giorgetta, M. A. T1 - Differences between the QBO in the first and in the second half of the ERA-40 reanalysis JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 6 IS - 5 SP - 9259 EP - 9271 Y1 - 2006/09/26 PB - Copernicus Publications SN - 1680-7375 UR - http://www.atmos-chem-phys-discuss.net/6/9259/2006/ L1 - http://www.atmos-chem-phys-discuss.net/6/9259/2006/acpd-6-9259-2006.pdf DO - 10.5194/acpd-6-9259-2006 ER -