POWER-SPECTRAL ANALYSIS OF TROPICAL UPPER WINDS
TRAVELERS RESEARCH CENTER INC HARTFORD CT
Pagination or Media Count:
Power-spectral analysis of 8 mo of upper winds for Kwajalein shows significant peaks for 850 and 200 mb in the frequency band between 2.5 and 4 days. This is interpreted as the result of migrating perturbations with a wavelength of from 1000 to 2000 km moving with the trade wind. At 300 mb, the most pronounced peak is centered at 17 days it is presumably a result either of slow-moving perturbations of a larger scale than those embedded in the trades or of meridional oscillations in the zonal flow.