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Science 27 March 1987:
Vol. 235. no. 4796, pp. 1631 - 1633
DOI: 10.1126/science.235.4796.1631
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Articles

Solar Irradiance Change and Special Longitudes Due to r-Modes

CHARLES L. WOLFF 1 and JOHN R. HICKEY 2

1 NASA Goddard Space Flight Center, Greenbelt, MD 20771.
2 The Eppley Laboratory, Inc., Newport, RI 02840.

Sluggish global oscillations, having a periodicity of months and trapped in the sun's convection zone, modulate the amount of energy reaching Earth and seem to impose some large-scale order on the distribution of solar surface features. These recently recognized oscillations (r-modes) increase the predictability of solar changes and may improve understanding of rotation and variability in other stars. Most of the 13 periodicities ranging from 13 to 85 days that are caused by r-modes can be detected in Nimbus 7 observations of solar irradiance during 3 years at solar maximum. These modes may also bear on the classical question of persistent longitudes of high solar activity.

Submitted on November 14, 1986
Accepted on January 28, 1987


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Stellar Activity and Brightness Variations: A Glimpse at the Sun's History.
R. R. Radick, G. W. Lockwood, and S. L. Baliunas (1990)
Science 247, 39-44
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Science. ISSN 0036-8075 (print), 1095-9203 (online)