Physics
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nciml..39..353c&link_type=abstract
Nuovo Cimento, Lettere, Serie 2, vol. 39, April 14, 1984, p. 353-363. Research supported by the Consiglio Nazionale delle Ricerc
Physics
Diurnal Variations, Planetary Waves, Wind Variations, Amplitude Distribution Analysis, Anomalies, Radio Meteors, Summer, Wind Measurement
Scientific paper
In order to study the quasi-2-day oscillations in the wind measurements obtained from meteor radar, two joint campaigns, one at Budrio (44.5 N, 12 E) and one at Sheffield (53.5 N, 2 W), were conducted during the summers of 1979 and 1980. It was demonstrated that the oscillations could be caused by westward-travelling planetary-scale waves peaking in late summer in the northern hemisphere. During the 1979 summer, an oscillation with a 43 hour period and a 15-20 m/s amplitude occurred in phase at both stations, at different height intervals between 75 and 115 km. During the 1980 summer, Budrio data illustrated oscillations with periods of approximately 36, 43, and 60 hours; Sheffield data demonstrated oscillations with 43, 50 and 60 hour periods. Local stratospheric winds may affect planetary waves. Also noted was the Budrio 1981-82 early winter wind data, which showed the dominance of zonal 2-day waves over meridional waves.
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