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Studies of solar Ca K plages and UV, X-ray and 10 cm variations
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1982
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Description:The literature about Ca K plages is briefly reviewed with particular emphasis on the statistics of plage lifetimes, areas, and intensities. Inconsistencies among reports of Ca K plage data were examined and occasional problems found. Plage area is shown to be correlated to the associated sunspot area but the relation includes appreciable scatter. Estimates of the solar 1-8A X-ray flux based on Ca K plage data are shown to be more accurate than those based on the 10.7 cm radio flux. Daily means of the solar soft X-ray flux observed primarily from the SMS-2 satellites are presented for 1975 - 1976. The quality factor for solar soft X-ray data are presented for 1975 - 1980.
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Rights Information:CC0 Public Domain
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Compliance:Library
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