The day-to-day variability of upper atmosphere tidal winds and dynamo currents

Details The day-to-day variability of upper atmosphere tidal winds and dynamo currents The day-to-day variability of upper atmosphere tidal winds and dynamo currents

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jatp...53...39p&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 53, Jan.-Feb. 1991, p. 39-47. Australian Research Council-

Physics

9

Diurnal Variations, Dynamo Theory, Ionospheric Currents, Tidal Waves, Upper Atmosphere, Cross Correlation, Geomagnetism, Magnetic Measurement, Mesosphere, Solar Cycles, Tides

Scientific paper

A daily measure of the strength of the ionospheric current system near noon for each day of 1985 has been determined from magnetometer records. These daily values are correlated with daily tidal amplitudes in the mesosphere observed by the space-antenna wind technique. If upward-propagating tidal modes play any part in inducing dynamo currents some correlation would be expected, but none is found. Also, the day-to-day variations of the diurnal and semi-diurnal tides are uncorrelated with each other. Possible reasons for the results are discussed.

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