Summary
The results of comparisons of experimental data on the A3 2775 kHz absorption, X-ray (1–8 Å) flux and Lyman-α radiation are compared with model data on ionization-rate and radio-wave absorption height profiles. The Lyman-α radiation is found to dominate even in the upper D-region ionization (except flare conditions). A significant increase of usually used nitric oxide concentrations from rocket airglow measurements is required for achieving the best agreement between experimental and model data.
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Laštovička, J. The dependence of the ionospheric absorption at 2775 kHz on the intensity of ionizing radiation—Ionospheric implications. PAGEOPH 114, 321–331 (1976). https://doi.org/10.1007/BF00876933
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DOI: https://doi.org/10.1007/BF00876933