Global and Local Winds Blog -Hirsch P.
Global winds are caused by the unequal heating of the Earth's surface. Some global winds are called Polar Easterlies, Prevailing Westerlies, Trade winds, or when the southern and northern trade winds collide they make doldrums. Global winds blow in the same direction every day. Some winds called trade winds get curved to the west because of the Coriolis Effect. All global winds curve because the Coriolis Effect. So winds like the trade winds, get curved naturally when they are on different hemispheres.