Reconstruction of solar irradiance using the Group sunspot number

We present a reconstruction of total solar irradiance since 1610 to the present based on variations of the surface distribution of the solar magnetic field. The latter is calculated from the historical record of the Group sunspot number using a simple but consistent physical model. Our model success...

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Bibliographic Details
Published in:Advances in space research 2007, Vol.40 (7), p.986-989
Main Authors: Balmaceda, L., Krivova, N.A., Solanki, S.K.
Format: Article
Language:English
Subjects:
Solar activity
Solar irradiance
Solar magnetic fields
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Summary:We present a reconstruction of total solar irradiance since 1610 to the present based on variations of the surface distribution of the solar magnetic field. The latter is calculated from the historical record of the Group sunspot number using a simple but consistent physical model. Our model successfully reproduces three independent data sets: total solar irradiance measurements available since 1978, total photospheric magnetic flux from 1974 and the open magnetic flux since 1868 (as empirically reconstructed from the geomagnetic aa-index). The model predicts an increase in the total solar irradiance since the Maunder Minimum of about 1.3 Wm −2.
ISSN:0273-1177
1879-1948
DOI:10.1016/j.asr.2007.02.077