Decrease of ozone and atomic oxygen in the lower mesosphere during a PCA event |
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| Authors: | W Swider TJ Keneshea |
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| Institution: | Air Force Cambridge Research Laboratories, Bedford, Massachusetts 01730, U.S.A. |
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| Abstract: | It is argued that ozone measurements made by Weeks et al. (1972) can be interpreted in terms of the enhanced ionization present. The conversion of O2+ ions to oxonium, H3O+ · (H2O)n, ions plus the dissociative recombination of these ions provides for an increased OH and/or H formation rate. The resulting enhanced OH and HO2 concentrations reduce the ambient atomic oxygen and hence ozone populations. The net excess H + OH formation rate is found to lie between one and two times the ionization production rate at altitudes where oxonium ions are the dominant positive ion species. |
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