Marsden Squares are units of measurement in a Marsden projection. Marsden squares utilize the latitude/longitude coordinate system. From 80 degrees north latitude to 70 degrees south latitude, each Marsden Square occupies a ten degree latitude by ten degree longitude area.
The Marsden Square is named after William Marsden who was the Admiralty Secretary for Great Britain at the turn of the nineteenth century.
Marsden Squares have been broadly used by meteorologists to track weather patterns.
- Agnew, D.C. Robert Fitzroy and the myth of the 'Marsden Square': Transatlantic rivalries in early marine meteorology. Notes & Records of The Royal Society of London, 2004, Pgs. 21-46. - Article by the Royal Society on the history of William Marsden and Marsden Squares.