A comparison of models of the sun's extreme ultraviolet irradiance variations

Details A comparison of models of the sun's extreme ultraviolet irradiance variations A comparison of models of the sun's extreme ultraviolet irradiance variations

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9511933l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Aug. 1, 1990, p. 11933-11944.

Astronomy and Astrophysics

Astronomy

48

Astronomical Models, Extreme Ultraviolet Radiation, Solar Corona, Solar Radiation, Solar Radio Emission, Chromosphere, Emission Spectra, Helium, Solar Spectra

Scientific paper

Significant differences are noted between the empirical solar EUV irradiance-variability models of Hinterreger-Fukui-Gilson (1981), or 'HFG', and Tobiska and Barth (1990), or 'TB', upon their evaluation at (1) solar minimum, (2) during a typical 27-day solar rotation, and (3) over the 21st 11-year cycle. Relative to the HFG model and Atmospheric Explorer-E (AE-E) observations, the TB model overestimates coronal EUV emissions and underestimates chromospheric ones. It is shown that AE-E EUV irradiance observations furnish important physical constraints on empirical model variations over the timescales of solar rotations.

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