In the early 18th century, George Hadley, an English lawyer and amateur meteorologist, was dissatisfied with the theory that the astronomer Edmond Halley had proposed for explaining the trade winds.
A inicios do século XVIII, George Hadley, un avogado inglés e meteorólogo amador, non estaba satisfeito coa teoría que propuxera o astrónomo Edmond Halley para explicar a formación dos ventos alisios.