@Article{acpd-5-9993-2005, AUTHOR = {Blumenstock, T. and Kopp, G. and Hase, F. and Hochschild, G. and Mikuteit, S. and Raffalski, U. and Ruhnke, R.}, TITLE = {Observation of unusual chlorine activation by ground-based infrared and microwave spectroscopy in the late Arctic winter 2000/01}, JOURNAL = {Atmospheric Chemistry and Physics Discussions}, VOLUME = {5}, YEAR = {2005}, NUMBER = {5}, PAGES = {9993--10017}, URL = {http://www.atmos-chem-phys-discuss.net/5/9993/2005/}, ISSN = {1680-7367} }