Weather map, 1686.
© Science Museum / Science & Society Picture Library
This map of the trade winds and monsoons in the seas of the tropics was drawn up by Edmond Halley (1656-1742), and is taken from 'Philosophical Transactions of the Royal Society' (1686). It is thought to be the earliest ever weather map, showing prevailing winds on a geographical map covering the tropical and sub-tropical regions of the Earth. Halley was an English astronomer and mathematician, who published studies on a variety of subjects, including winds and monsoons, and became Britain's Astronomer Royal in 1720.