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22:40 May 15, 2005
English to Spanish translations [PRO] Science - Environment & Ecology
English term or phrase:easterly wave
easterly wave—A migratory wavelike disturbance of the tropical easterlies.
It is a wave within the broad easterly current and moves from east to west, generally more slowly than the current in which it is embedded. Although best described in terms of its wavelike characteristics in the wind field, it also consists of a weak trough of low pressure. Easterly waves do not extend across the equatorial trough. To the west of the trough line in an easterly wave over the ocean, there is generally found divergence, a shallow moist layer, and exceptionally fine weather. The moist layer rises rapidly near the trough line; in and to the east of the trough line intense convergence, much cloudiness, and heavy rain showers prevail. This asymmetric weather pattern may be greatly distorted by orographic and diurnal influences if the wave passes over land areas. Easterly waves occasionally intensify into tropical cyclones. Compare equatorial wave.
Explanation: (Ref. 1)
ONDA U OLA TROPICAL
Es otro nombre para la onda de los vientos del este. Es una área de baja presión relativa que se mueve hacia el oeste a través de los vientos alisios del este. Generalmente se le asocia con grandes extensiones de nubes y lluvias y puede asociarse con el desarrollo potencial de un ciclón tropical.