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| Titel |
The Smithsonian solar constant data revisited: no evidence for a strong effect of solar activity in ground-based insolation data |
| VerfasserIn |
G. Feulner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 7 ; Nr. 11, no. 7 (2011-04-06), S.3291-3301 |
| Datensatznummer |
250009593
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| Publikation (Nr.) |
 copernicus.org/acp-11-3291-2011.pdf |
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| Zusammenfassung |
| Apparent evidence for a strong signature of solar activity in
ground-based insolation data was recently reported. In particular,
a strong increase of the irradiance of the direct solar beam with
sunspot number as well as a decline of the brightness of the solar
aureole and the measured precipitable water content of the
atmosphere with solar activity were presented. The latter effect was
interpreted as evidence for cosmic-ray-induced aerosol
formation. Here I show that these spurious results are due to
a failure to correct for seasonal variations and the effects of
volcanic eruptions and local pollution in the data. After correcting
for these biases, neither the atmospheric water content nor the
brightness of the solar aureole show any significant change with
solar activity, and the variations of the solar-beam irradiance with
sunspot number are in agreement with previous estimates. Hence there
is no evidence for the influence of solar activity on the climate
being stronger than currently thought. |
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