Other
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985p%26ss...33.1317s&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 33, Nov. 1985, p. 1317-1325.
Other
1
Atmospheric Circulation, Equatorial Electrojet, Vorticity, Wave Propagation, Atmospheric Tides, E Region, Planetary Waves, Troposphere
Scientific paper
A superposed epoch analysis is performed on the vorticity area index (VAI) taking days of reverse equatorial electrojet (REJ) as key days. This was motivated by the hypothesis that the REJ is caused by the penetration of planetary or tidal waves into the E region and that the changes in these waves may also appear in the VAI. Results indicate trends in VAI around REJ key days. The afternoon REJ at Huancayo and Addis Ababa is associated with an increase in VAI over 2-3 days prior to the REJ event while the morning REJ at Huancayo and Trivandrum is associated with a decrease in VAI. The statistical significance of the results are discussed and compared with those obtained for the solar sector boundary crossing effect on VAI. It is suggested that other accompanying analyses are required to fully depict the VAI behavior during these events.
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