Characteristics of quasi-biennial oscillation over Kenya and their predictability potential for the seasonal rainfall
investigated using monthly zo.ta l wind com ponents from Nairob i (Kenya ) within the period
1966-1987. RelatiHn.;;hips between the stra tospher ic eas terl y and westerly wino phases and t he seasona l ra infall
anomalics were also iO\t,"..')t igatN.
Res ults Irom spec tra l a nalysis indicated tho d ominance (If a 28 mon th s' period in the IllOal w ind comnoncn.
The \'Crtical ra te of propagar ioa of both westerly and easterly wind phases was about - · 1.2 kmmonth.
Results from statist ical analysis indicated signitica nr (at 5 '~~ level) association between rainfall anomaly
class (above normal. normal. a mi below normal) and east erly and westerl y wind phas...es.
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