TY - JOUR A1 - Braun, M. A1 - Grooß, J.-U. A1 - Woiwode, W. A1 - Johansson, S. A1 - Höpfner, M. A1 - Friedl-Vallon, F. A1 - Oelhaf, H. A1 - Preusse, P. A1 - Ungermann, J. A1 - Sinnhuber, B.-M. A1 - Ziereis, H. A1 - Braesicke, P. T1 - Nitrification of the lowermost stratosphere during the exceptionally cold Arctic winter 2015–2016 JO - Atmos. Chem. Phys. J1 - ACP VL - 19 IS - 21 SP - 13681 EP - 13699 Y1 - 2019/11/11 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/19/13681/2019/ L1 - https://acp.copernicus.org/articles/19/13681/2019/acp-19-13681-2019.pdf DO - 10.5194/acp-19-13681-2019 ER -