TY - JOUR A1 - Fiedler, J. A1 - Baumgarten, G. A1 - Berger, U. A1 - Hoffmann, P. A1 - Kaifler, N. A1 - Lübken, F.-J. T1 - NLC and the background atmosphere above ALOMAR JO - Atmos. Chem. Phys. J1 - ACP VL - 11 IS - 12 SP - 5701 EP - 5717 Y1 - 2011/06/21 PB - Copernicus Publications SN - 1680-7324 UR - http://www.atmos-chem-phys.net/11/5701/2011/ L1 - http://www.atmos-chem-phys.net/11/5701/2011/acp-11-5701-2011.pdf DO - 10.5194/acp-11-5701-2011 ER -