Mesospheric ozone depletion during solar proton events

Computer Science

Scientific paper

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Mesosphere, Ozone, Ozone Depletion, Solar Protons, Atmospheric Ionization, Noaa 6 Satellite, Photolysis, Solar Mesosphere Explorer

Scientific paper

Proton fluxes observed by the NOAA 6 satellite were used to calculate ionization rates during two solar proton events. This ionization leads to the production of odd hydrogen radicals (H+OH+HO2) which catalytically destroy odd oxygen in the mesosphere and stratosphere. A one dimensional time dependent model was used to calculate the percentage change in ozone resulting from these events. The calculated ozone depletion is compared to that observed by the Solar Mesosphere Explorer satellite. Differences are attributed to the effect of changing solar zenith angle on the rate of H2O photolysis.

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