@Article{acpd-6-701-2006, AUTHOR = {Worton, D. R. and Sturges, W. T. and Schwander, J. and Mulvaney, R. and Barnola, J.-M. and Chappellaz, J.}, TITLE = {20th Century trends and budget implications of trihalomethanes and dihalomethanes inferred from North GRIP firn air}, JOURNAL = {Atmospheric Chemistry and Physics Discussions}, VOLUME = {6}, YEAR = {2006}, NUMBER = {1}, PAGES = {701--754}, URL = {http://www.atmos-chem-phys-discuss.net/6/701/2006/}, ISSN = {1680-7367} }