@Article{acpd-5-10259-2005, AUTHOR = {Assonov, S. S. and Brenninkmeijer, C. A. M. and Jöckel, P. and Mulvaney, R. and Bernard, S.}, TITLE = {A reconstruction of the past trend of atmospheric CO based on firn air samples from Berkner Island, Antarctica}, JOURNAL = {Atmospheric Chemistry and Physics Discussions}, VOLUME = {5}, YEAR = {2005}, NUMBER = {5}, PAGES = {10259--10299}, URL = {http://www.atmos-chem-phys-discuss.net/5/10259/2005/}, ISSN = {1680-7367} }