@article{Hegglin_2009, title={A global view of the extratropical tropopause transition layer from Atmospheric Chemistry Experiment Fourier Transform Spectrometer O3, H2O, and CO}, volume={114}, ISSN={0148-0227}, url={http://dx.doi.org/10.1029/2008JD009984}, DOI={10.1029/2008jd009984}, number={D7}, journal={Journal of Geophysical Research: Atmospheres}, publisher={American Geophysical Union (AGU)}, author={Hegglin, M. I. and Boone, C. D. and Manney, G. L. and Walker, K. A.}, year={2009}, month=feb }