A relationship between solar activity and planetary albedos

Details A relationship between solar activity and planetary albedos A relationship between solar activity and planetary albedos

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.280...43l&link_type=abstract

Nature, vol. 280, July 5, 1979, p. 43-45. NSF-supported research.

Physics

20

Albedo, Neptune (Planet), Saturn (Planet), Solar Activity, Sunspot Cycle, Titan, Planetary Atmospheres, Planetary Radiation, Reflectance, Solar Flares, Solar Radiation, Uranus (Planet)

Scientific paper

A significant anti-correlation between solar activity and the brightnesses of Neptune and the Saturn satellite Titan has been observed. Both objects increased in brightness by several percent between 1972 and 1976 and subsequently became fainter, a pattern corresponding with the decline of solar activity at the end of solar cycle 20, followed by a sharp increase in activity at the beginning of cycle 21. It is suggested that the long-term envelope of solar activity drives planetary albedo changes which derive from relatively slow structural and chemical changes in planetary atmospheres. An analysis of photoelectric photometry of Uranus and Neptune for the period 1953 to 1966 has failed to reveal any evidence of transient effects such as a planetary response to solar flares.

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