@Article{acpd-7-15067-2007,
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 Rodr\'{\i}guez, S.},
TITLE = {NO$_{2}$ climatology in the northern subtropical region: diurnal, seasonal and interannual variability},
JOURNAL = {Atmospheric Chemistry and Physics Discussions},
VOLUME = {7},
YEAR = {2007},
NUMBER = {5},
PAGES = {15067--15103},
URL = {http://www.atmos-chem-phys-discuss.net/7/15067/2007/},
DOI = {10.5194/acpd-7-15067-2007}
}