@article{Randall_2009, title={NOx descent in the Arctic middle atmosphere in early 2009}, volume={36}, ISSN={1944-8007}, url={http://dx.doi.org/10.1029/2009GL039706}, DOI={10.1029/2009gl039706}, number={18}, journal={Geophysical Research Letters}, publisher={American Geophysical Union (AGU)}, author={Randall, C. E. and Harvey, V. L. and Siskind, D. E. and France, J. and Bernath, P. F. and Boone, C. D. and Walker, K. A.}, year={2009}, month=sep }