@Article{acp-8-1635-2008, AUTHOR = {Gil, M. and Yela, M. and Gunn, L. N. and Richter, A. and Alonso, I. and Chipperfield, M. P. and Cuevas, E. and Iglesias, J. and Navarro, M. and Puentedura, O. and Rodríguez, S.}, TITLE = {NO$_{2}$ climatology in the northern subtropical region: diurnal, seasonal and interannual variability}, JOURNAL = {Atmospheric Chemistry and Physics}, VOLUME = {8}, YEAR = {2008}, NUMBER = {6}, PAGES = {1635--1648}, URL = {http://www.atmos-chem-phys.net/8/1635/2008/}, ISSN = {1680-7316} }