@Article{acp-7-6099-2007, AUTHOR = {Tarasova, O. A. and Brenninkmeijer, C. A. M. and Jöckel, P. and Zvyagintsev, A. M. and Kuznetsov, G. I.}, TITLE = {A climatology of surface ozone in the extra tropics: cluster analysis of observations and model results}, JOURNAL = {Atmospheric Chemistry and Physics}, VOLUME = {7}, YEAR = {2007}, NUMBER = {24}, PAGES = {6099--6117}, URL = {http://www.atmos-chem-phys.net/7/6099/2007/}, ISSN = {1680-7316} }