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A comparison of observations and model simulations of NO_x/NO_y in the lower stratosphere

Gao, R. S. and Fahey, D. W. and Del Negro, L. A. and Donnelly, S. G. and Keim, E. R. and Neuman, J. A. and Teverovskaia, E. and Wennberg, P. O. and Hanisco, T. F. and Lanzendorf, E. J. and Proffitt, M. H. and Margitan, J. J. and Wilson, J. C. and Elkins, J. W. and Stimpfle, R. M. and Cohen, R. C. and McElroy, C. T. and Bui, T. P. and Salawitch, R. J. and Brown, S. S. and Ravishankara, A. R. and Portmann, R. W. and Ko, M. K. W. and Weisenstein, D. K. and Newman, P. A. (1999) A comparison of observations and model simulations of NO_x/NO_y in the lower stratosphere. Geophysical Research Letters, 26 (8). pp. 1153-1156. ISSN 0094-8276. doi:10.1029/1999GL900162.

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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.

Item Type:Article
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Wennberg, P. O.0000-0002-6126-3854
Hanisco, T. F.0000-0001-9434-8507
Cohen, R. C.0000-0001-6617-7691
Alternate Title:A comparison of observations and model simulations of NOx/NOy in the lower stratosphere
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.
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Issue or Number:8
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ID Code:47317
Deposited On:18 Jul 2014 18:49
Last Modified:10 Nov 2021 17:38

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