Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 1, 2000 | Published
Journal Article Open

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


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.

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.

Attached Files

Published - grl13647.pdf


Files (577.7 kB)
Name Size Download all
577.7 kB Preview Download

Additional details

August 22, 2023
October 26, 2023