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The aurora as a source of planetary-scale waves in the middle atmospherePhotographs of global-scale auroral forms taken by scanning radiometers onboard U.S. Air Force weather satellites in 1972 show that auroral bands exhibit well-organized wave motion with typical zonal wave number of 5 or so. The scale size of these waves is in agreement with that of well-organized neutral wind fields measured by the 1967-50B satellite in the 150- to 220-km region during the geomagnetic storm of May 27, 1967. The horizontal scale size revealed by these observations is in agreement with that of high-altitude traveling ionospheric disturbances. It is conjectured that the geomagnetic storm is a source of planetary and synoptic scale neutral atmospheric waves in the middle atmosphere. The possible existence of a source of waves of the proper scale size to trigger instabilities in middle atmospheric circulation systems may be significant in the study of lower atmospheric response to geomagnetic activity.
Document ID
19760007450
Document Type
Conference Paper
Authors
Chiu, Y. T. (Aerospace Corp. El Segundo, CA, United States)
Straus, J. M. (Aerospace Corp. El Segundo, CA, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Publication Information
Publication: NASA. Goddard Space Flight Center Possible Relationships between Solar Activity and Meteorol. Phenomena
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: F04701-73-C-0074
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19760007440Analytic PrimaryPossible relationships between solar activity and meteorological phenomena