Physics
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..771t&link_type=abstract
Geophysical Research Letters, vol. 6, Oct. 1979, p. 771-774.
Physics
61
Atmospheric Ionization, Ionization Frequencies, Photoionization, Solar Cycles, Solar Terrestrial Interactions, Thermosphere, Explorer Satellites, Far Ultraviolet Radiation, Gas Ionization, Ionization Cross Sections, Solar Flux, Tables (Data)
Scientific paper
Increases in the solar ultraviolet flux (wavelengths shorter than 1250A) over the past five years of rising solar activity have been larger than anticipated. This increase in UV flux dramatically affects the production of ionization of the various constituents in the thermosphere. Measurements of the solar UV flux by the Atmosphere Explorer satellites are used to determine ionization frequencies for the major thermospheric species for various dates exhibiting notably different levels of solar activity. For the convenience of users of such data, a reduced set of cross-section and flux data is presented for the wavelength range below 1027A, consisting of 37 wavelength intervals
Hinteregger H. E.
Ong Rene A.
Torr Douglas G.
Torr Marsha R.
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