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Ozone destruction and production rates between spring and autumn in the Arctic stratosphere

Fahey, D. W. and Gao, R. S. and Del Negro, L. A. and Keim, E. R. and Kawa, S. R. and Salawitch, R. J. and Wennberg, P. O. and Hanisco, T. F. and Lanzendorf, E. J. and Perkins, K. K. and Lloyd, S. A. and Swartz, W. H. and Proffitt, M. H. and Margitan, J. J. and Wilson, J. C. and Stimpfle, R. M. and Cohen, R. C. and McElroy, C. T. and Webster, C. R. and Loewenstein, M. and Elkins, J. W. and Bui, T. P. (2000) Ozone destruction and production rates between spring and autumn in the Arctic stratosphere. Geophysical Research Letters, 27 (17). pp. 2605-2608. ISSN 0094-8276. doi:10.1029/2000GL011404.

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In situ measurements of radical and long-lived species were made in the lower Arctic stratosphere (18 to 20 km) between spring and early autumn in 1997. The measurements include O_3, ClO, OH, HO_2, NO, NO_2, N_(2)O, CO, and overhead O_3. A photochemical box model constrained by these and other observations is used to compute the diurnally averaged destruction and production rates of O3 in this region. The rates show a strong dependence on solar exposure and ambient O_3. Total destruction rates, which reach 19%/month in summer, reveal the predominant role of NO_x and HO_x catalytic cycles throughout the period. Production of O_3 is significant only in midsummer air parcels. A comparison of observed O_3 changes with destruction rates and transport effects indicates the predominant role of destruction in spring and an increased role of transport by early autumn.

Item Type:Article
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URLURL TypeDescription
Wennberg, P. O.0000-0002-6126-3854
Hanisco, T. F.0000-0001-9434-8507
Cohen, R. C.0000-0001-6617-7691
Additional Information:© 2000 American Geophysical Union. Received January 17, 2000; revised May 26, 2000; accepted June 1 2000. The authors are grateful for support from the NASA Upper Atmospheric Research Program and the Atmospheric Effects of Aviation Project, to J. A. Logan for O_3 data, to P. A. Newman for back trajectories, and to S. G. Donnelly for instrument support.
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Issue or Number:17
Record Number:CaltechAUTHORS:20140624-094924798
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46464
Deposited On:24 Jun 2014 20:25
Last Modified:10 Nov 2021 17:26

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