Response of mesospheric ozone to particle precipitation

Details Response of mesospheric ozone to particle precipitation Response of mesospheric ozone to particle precipitation

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28.1147c&link_type=abstract

Planetary and Space Science, vol. 28, Dec. 1980, p. 1147-1153.

Physics

19

Atmospheric Chemistry, Mesosphere, Ozone, Particle Precipitation, Photochemical Reactions, Hydrogen, Hydroxyl Radicals, Oxygen, Solar Protons

Scientific paper

Calculations are presented which indicate that the mesospheric ozone may increase after a particle precipitation event due to the photochemistry of odd hydrogen and its catalytic effect on odd oxygen. The odd H produced in water vapor photolysis may be converted to H2 by reacting with HO2; this results in a decrease in the H2O mixing ratio and an increase in the H2 ratio with altitude in the upper mesosphere and lower thermosphere. Odd H processes dominate ozone destruction in the 70-85 km altitude region, and an increase in ozone may occur if odd H concentrations decrease. The calculated time behavior photolysis reactions affecting odd H and H are examined in a numerical model based on the August 1972 solar proton event as an example, and predictions are made for future events.

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