equatorial wave

equatorial wave

[‚e·kwə′tȯr·ē·əl ′wāv]
(meteorology)
A wavelike disturbance of the equatorial easterlies that extends across the equatorial trough.
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References in periodicals archive ?
The appearance of an equatorial wave, the Inter Tropical Convergence Zone in its most active form, from late December through to this week, situated between 15 and 20oS, ensured a consistent moist air presence close to our northern regions.
The "delayed oscillator" mechanism emphasizes eastward-propagating equatorial wave processes,(*) westward-propagating off-equatorial signals, and their asymmetric reflections at eastern and western boundaries respectively.
An equatorial wave drifts along the northern border while a cold front sweeps across far south of the Cape.
The equatorial wave weakens though as it drifts further west, but advected moist air penetrates into central Namibia.
Meanwhile a further Equatorial wave develops in a similar time range.