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Using geomagnetic indices to forecast the next sunspot maximumThe Babcock (1961) 'solar dynamo' model and known interactions of the interplanetary magnetic field with the earth's magnetosophere are used to explain the relations found between geomagnetic indices at solar minimum and the sunspot number at the following solar maximum. The work of Kane (1987) is augmented by including recent smoothed aa and Ap indices. A smoothed maximum sunspot number of 163 + or - 40 to peak in October 1990 + or - 9 months for solar cycle 22 is predicted. This value is close to the Schatten and Sofia (1987) value of 170 + or - 25, predicted using more direct solar indicators.
Document ID
19880053450
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gonzalez, Guillermo
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schatten, Kenneth H.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Solar Physics
Volume: 114
Issue: 1, 19
ISSN: 0038-0938
Subject Category
Solar Physics
Report/Patent Number
ISSN: 0038-0938
Accession Number
88A40677
Distribution Limits
Public
Copyright
Other

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