@article{Randall_2006, title={Enhanced NOx in 2006 linked to strong upper stratospheric Arctic vortex}, volume={33}, ISSN={1944-8007}, url={http://dx.doi.org/10.1029/2006GL027160}, DOI={10.1029/2006gl027160}, number={18}, journal={Geophysical Research Letters}, publisher={American Geophysical Union (AGU)}, author={Randall, C. E. and Harvey, V. L. and Singleton, C. S. and Bernath, P. F. and Boone, C. D. and Kozyra, J. U.}, year={2006}, month=sep }