@Article{acpd-5-7547-2005, AUTHOR = {Bernard, S. and Röckmann, T. and Kaiser, J. and Barnola, J.-M. and Fischer, H. and Blunier, T. and Chappellaz, J.}, TITLE = {Constraints on N$_{2}$O budget changes since pre-industrial time from new firn air and ice core isotope measurements}, JOURNAL = {Atmospheric Chemistry and Physics Discussions}, VOLUME = {5}, YEAR = {2005}, NUMBER = {4}, PAGES = {7547--7575}, URL = {http://www.atmos-chem-phys-discuss.net/5/7547/2005/}, ISSN = {1680-7367} }