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Long-term drift of the coronal source magnetic flux and the total solar irradiance

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Lockwood, M. and Stamper, R. (1999) Long-term drift of the coronal source magnetic flux and the total solar irradiance. Geophysical Research Letters, 26 (16). pp. 2461-2464. ISSN 0094-8276

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To link to this article DOI: 10.1029/1999GL900485

Abstract/Summary

We test the method of Lockwood et al. [1999] for deriving the coronal source flux from the geomagnetic aa index and show it to be accurate to within 12% for annual means and 4.5% for averages over a sunspot cycle. Using data from four solar constant monitors during 1981-1995, we find a linear relationship between this magnetic flux and the total solar irradiance. From this correlation, we show that the 131% rise in the mean coronal source field over the interval 1901-1995 corresponds to a rise in the average total solar irradiance of {\Delta}I = 1.65 +/- 0.23 Wm^{-2}.

Item Type:Article
Refereed:Yes
Divisions:No Reading authors. Back catalogue items
Faculty of Science > School of Mathematical and Physical Sciences > Department of Meteorology
ID Code:38745
Additional Information:First published online 2012
Publisher:American Geophysical Union

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