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Solar flux and its variationsData are presented on the solar irradiance as derived from a number of sources. An attempt was made to bring these data onto a uniform scale. Summation of fluxes at all wavelengths yields a figure of 1357.826 for the solar constant. Estimates are made of the solar flux variations due to flares, active regions (slowly varying component), 27-day period, and the 11-yr cycle. Solar activity does not produce a significant variation in the value of the solar constant. Variations in the X-ray and EUV portions of the solar flux may be several orders of magnitude during solar activity, especially at times of major flares. It is established that these short wavelength flux enhancements cause significant changes in the terrestrial ionosphere.
Document ID
Document Type
Conference Paper
Smith, E. V. P.
(Maryland Univ. College Park, MD, United States)
Gottlieb, D. M.
(Maryland Univ. College Park, MD, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Publication Information
Publication: NASA. Goddard Space Flight Center Possible Relationships between Solar Activity and Meteorol. Phenomena
Subject Category
Solar Physics
Accession Number
Funding Number(s)
Distribution Limits
Work of the US Gov. Public Use Permitted.
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