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Coupling of ionosphere and troposphere during the occurrence of isolated tornadoes on November 20, 1973The paper examines the coupling between the ionosphere and the troposphere during time periods with isolated tornadoes on the stormy day of November 20, 1973. Observations are made with a high-frequency CW Doppler array system, in which radio receivers located at a central site monitored signals transmitted from three independent remote sites on three sets of frequencies (4.0125, 4.759, 5.734 MHz) and reflected off the ionosphere approximately halfway between the transmitter and receiver sites. It is shown that the sources of the gravity waves associated with tornadoes are always on the squall lines and near the tornado touchdown locations, and that analyses of ionospheric Doppler sounder observations of medium-scale gravity waves can contribute to the understanding of the coupling between the ionosphere and the troposphere during periods of severe storm activity.
Document ID
19790049489
Document Type
Reprint (Version printed in journal)
Authors
Hung, R. J. (Alabama Univ. Huntsville, AL, United States)
Phan, T. (Alabama, University Huntsville, Ala., United States)
Smith, R. E. (NASA Marshall Space Flight Center Atmospheric Sciences Div. Huntsville, Ala., United States)
Date Acquired
August 9, 2013
Publication Date
April 1, 1979
Publication Information
Publication: Journal of Geophysical Research
Volume: 84
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAS8-31171
CONTRACT_GRANT: NSF ATM-75-15706
Distribution Limits
Public
Copyright
Other