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Solar plages and the vorticity of the earth's atmosphereThree superimposed epoch analyses of the vorticity area index (VAI) at 500 mbar are described. The analyses used the following definitions of the zero days: (1) the central meridian passage (CMP) of very active solar plages; (2) the occurrence of peak values of the 10.7 cm solar radio flux; and (3) the CMP of active solar plages also accompanied at CMP by sharp rises in 10.7 cm solar radio noise. All three superimposed epoch analyses show a sustained rise in VAI several days before the zero day; the rise continues through the zero day and is followed by a sustained minimum in VAI several days after the zero day. The results suggest that the location of the very active plages play an important role in determining their meteorological influence. It is possible that the initial rise in VAI is caused by enhanced electromagnetic radiation associated with the solar activity, and that the decrease some days later is the result of the geomagnetic storm particle emission that generally follows the zero date.
Document ID
19780060012
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Olson, R. H.
(Aspen Inst. for Humanistic Studies Boulder, CO, United States)
Roberts, W. O.
(Aspen Institute for Humanistic Studies Boulder, Colo., United States)
Prince, H. D.
(Aspen Inst. for Humanistic Studies Boulder, CO, United States)
Hedeman, E. R.
(McMath-Hulbert Observatory Pontiac, Mich., United States)
Date Acquired
August 9, 2013
Publication Date
July 13, 1978
Publication Information
Publication: Nature
Volume: 274
Subject Category
Solar Physics
Accession Number
78A43921
Distribution Limits
Public
Copyright
Other

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