tropical easterlies

tropical easterlies

[′träp·ə·kəl ′ēs·tər·lēz]
(meteorology)
The trade winds when shallow and exhibiting a strong vertical shear; at about 500 feet (152 meters) the easterlies give way to the upper westerlies, which are sufficiently strong and deep to govern the course of cloudiness and weather. Also known as subtropical easterlies.
References in periodicals archive ?
As the summer wears on, the deep tropical easterlies expand northward from the southern Gulf of Mexico into the southern states.
El Nino boosts the atmosphere's angular momentum by slowing down the tropical easterlies and speeding the westerlies outside the tropics, says Salstein.

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