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The term originally derives from the early fourteenth century sense of trade (in late Middle English) still often meaning "path" or "track". [2] The Portuguese recognized the importance of the trade winds (then the volta do mar, meaning in Portuguese "turn of the sea" but also "return from the sea") in navigation in both the north and south Atlantic Ocean as early as the 15th century. [3]
The trade winds (also called trades) are the prevailing pattern of easterly surface winds found in the tropics near the Earth's equator, [4] equatorward of the subtropical ridge. These winds blow predominantly from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere. [5]
The westerlies (blue) and trade winds (yellow and brown) The general atmospheric circulation. Trade winds (red), westerlies (white) and the South Pacific anticyclone (blue) [1] The westerlies, anti-trades, [2] or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude.
Map of the five major ocean gyres Route from Philippines to Acapulco, Mexico Portuguese trade routes (blue) and the Spanish trade routes (white). Portuguese ships went almost to Brazil before rounding Africa and to the Azores before turning east to Lisbon. The Spanish Manila galleons used the northern Trade winds going west and the westerlies ...
The winds that flow to the west (from the east, easterly wind) at the ground level in the Hadley cell are called the trade winds. Though the Hadley cell is described as located at the equator, it shifts northerly (to higher latitudes) in June and July and southerly (toward lower latitudes) in December and January, as a result of the Sun's ...
The trade winds (also called trades) are the prevailing pattern of easterly surface winds found in the tropics towards the Earth's equator. [30] The trade winds blow predominantly from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere. [31]
It's tough to say for sure who the first person to ever utter the words "Black Friday" might have been, but here's everything we know about its origins.
If they leave in late summer they will hit the trade winds sooner, since wind systems move north and south with the seasons. The problem was to get back again. The solution was the volta do mar , in which captains would sail northwest across the winds and currents until they found the westerlies and were blown back to Europe.