Variations in sunspot structure and climate View Full Text


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Article Info

DATE

1979-03

AUTHORS

Douglas V. Hoyt

ABSTRACT

Sunspot structure is measured by taking the ratio of the area of the umbra to that of the penumbra. The time dependence of this umbral/penumbral ratio is remarkably similar to the record of the Northern Hemisphere surface temperature anomalies. On a year-to-year basis the correlation is 0.57, which is significant at better than the 0.01% level. It is postulated that a change in the umbral/penumbral ratio is proportional to a change in the solar luminosity and that long-term variations in the luminosity lead to corresponding changes in the climate of the Earth. More... »

PAGES

79-92

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00138229

DOI

http://dx.doi.org/10.1007/bf00138229

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052367216


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