equatorial easterlies

equatorial easterlies

[‚e·kwə′tȯr·ē·əl ′ēs·tər·lēz]
(meteorology)
The trade winds in the summer hemisphere when they are very deep, extending at least 5 to 6 miles (8 to 10 kilometers) in altitude, and generally not topped by upper westerlies; if upper westerlies are present, they are too weak and shallow to influence the weather. Also known as deep easterlies; deep trades.