A comparison of observations and model simulations of NO_x/NO_y in the lower stratosphere
- Creators
- Gao, R. S.
- Fahey, D. W.
- Del Negro, L. A.
- Donnelly, S. G.
- Keim, E. R.
- Neuman, J. A.
- Teverovskaia, E.
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Wennberg, P. O.
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Hanisco, T. F.
- Lanzendorf, E. J.
- Proffitt, M. H.
- Margitan, J. J.
- Wilson, J. C.
- Elkins, J. W.
- Stimpfle, R. M.
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Cohen, R. C.
- McElroy, C. T.
- Bui, T. P.
- Salawitch, R. J.
- Brown, S. S.
- Ravishankara, A. R.
- Portmann, R. W.
- Ko, M. K. W.
- Weisenstein, D. K.
- Newman, P. A.
Abstract
Extensive airborne measurements of the reactive nitrogen reservoir (NO_(y)) and its component nitric oxide (NO) have been made in the lower stratosphere. Box model simulations that are constrained by observations of radical and long-lived species and which include heterogeneous chemistry systematically underpredict the NO_x (= NO + NO_2) to NO_y ratio. The model agreement is substantially improved if newly measured rate coefficients for the OH + NO_2 and OH + HNO_3 reactions are used. When included in 2-D models, the new rate coefficients significantly increase the calculated ozone loss due to NO_x and modestly change the calculated ozone abundances in the lower stratosphere. Ozone changes associated with the emissions of a fleet of supersonic aircraft are also altered.
Additional Information
© 1999 American Geophysical Union. Received November2 4, 1998; revised February 18, 1999; accepted February 22, 1999. Paper number 1999GL900162. We thank the pilots and ground crew of the NASA ER-2 aircraft. This work is supported by the NASA Upper Atmospheric Research Program and the Atmospheric Effects of Aviation Project.Attached Files
Published - grl12971.pdf
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Additional details
- Alternative title
- A comparison of observations and model simulations of NOx/NOy in the lower stratosphere
- Eprint ID
- 47317
- Resolver ID
- CaltechAUTHORS:20140718-090035893
- NASA
- Created
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2014-07-18Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences