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Solar variabilityReference is made to direct measurements carried out by space-borne detectors which have shown variations of the solar constant at the 0.2 percent level, with times scales ranging from days to tens of days. It is contended that these changes do not necessarily reflect variations in the solar luminosity and that, in general, direct measurements have not yet been able to establish (or exclude) solar luminosity changes with longer time scales. Indirect techniques, however, especially radius measurements,suggest that solar luminosity variations of up to approximately 0.7 percent have occurred within a period of tens to hundreds of years.
Document ID
19830052072
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sofia, S.
(NASA Goddard Space Flight Center Laboratory for Planetary Atmospheres, Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
December 1, 1981
Publication Information
ISSN: 0185-1101
Subject Category
Solar Physics
Accession Number
83A33290
Distribution Limits
Public
Copyright
Other

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