Ozone transport by diabatic and planetary wave circulations on a beta plane

Details Ozone transport by diabatic and planetary wave circulations on a beta plane Ozone transport by diabatic and planetary wave circulations on a beta plane

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.8491r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Oct. 20, 1983, p. 8491-8504. NASA-Navy-supported research.

Physics

17

Atmospheric Diffusion, Ozone, Planetary Waves, Wave Dispersion, Anomalies, Atmospheric Models, Temporal Distribution, Transport Properties, Vertical Distribution

Scientific paper

A beta plane model is used to study the transport of ozone and a tracer distributed like ozone. In the first experiment, ozone is transported with a time dependent diabatic circulation in a beta channel. Increase in the ozone column density occurs principally through downward advection from the high altitude source region into the lower stratosphere. Compared with observations, the maximum in the total ozone field occurs too late and is too large. Transient planetary waves produce large temporary increases in total ozone near the pole during sudden warming events, but permanent increases are much smaller. Warmings which penetrate below the chemical transition region (major warmings) are most effective in changing the zonal mean ozone distribution. Combining the sudden warming and diabatic circulations simulates many of the observed features of the seasonal changes in total ozone at high latitudes. The diabatic circulation provides the major enhancement of the ozone column density while the transient planetary waves move ozone to high latitudes. This result suggests sudden warmings can play an important role in our understanding of the fluctuations in total ozone, and the final warming may be the key event which determines the date and magnitude of the spring maximum.

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