The response of the zonally averaged circulation to stratospheric ozone reductions

Details The response of the zonally averaged circulation to stratospheric ozone reductions The response of the zonally averaged circulation to stratospheric ozone reductions

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978nrl..reptq....s&link_type=abstract

Interim Report Naval Research Lab., Washington, DC. Plasma Physics Div.

Physics

Plasma Physics

Air Pollution, Atmospheric Circulation, Earth Atmosphere, Ozone, Atmospheric Models, Hydrocarbons, Planetary Radiation, Solar Activity

Scientific paper

The effects of various ozone density reductions on the zonally averaged circulation are evaluated with a numerical quasigeostrophic model. If the ozone perturbations are confined to the polar regions and are miniscule on a global basis as was characteristic of the August 1972 solar proton event, then the calculations indicate a negligible effect on the mean circulation. For global ozone perturbations by predicted halocarbon pollution, the difference between a 10% reduction in the zonal jet strength and less than a 5% change in global mean stratospheric temperature was calculated. Large, uniform ozone reductions (= 50%) produce significant effects on the mean circulation: a substantial collapse of the stratosphere due to cooler temperature and a weak polar night jet. The reflection and transmission of quasi-stationary planetary waves in the middle atmosphere are computed to be insensitive to solar activity as extreme as the August 1972 solar proton event. It thus seems improbable that planetary waves are a viable mechanism for solar-weather interactions that involve perturbations of the zonally averaged circulation by ozone density reductions.

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