Wind, temperature and rainfall graph Luke Howard

Circular diagram detailing prevailing wind directions, rain depth, and mean temperature over a period of eighteen years, 1815-1832, in London. The innermost circle lists the year, followed by the average rain depth, followed by the average temperature, followed by wind direction.

A line graph is used to indicate the average rain depth and temperature, while different coloured bars - green, pink, yellow and blue - are used to represent the different directions of wind.

Ink inscription inside the circle: ‘Genesis i.14 And GOD said let there be lights in the firmament of heaven to distinguish the day from the night; and let them be for Signs and let them be for Seasons, and for days and years.__ And it was so.___ Psalm civ 19. Luke Howard F.R.S.’ Ink inscription below the circle: ‘Climate of London. Yearly proportions of the opposite winds, the Mean Temp and Rain in a Cycle of 18 years by the Lunar declination.’

Diagram 3 from a paper sent to the Royal Society by Luke Howard, ‘On the proportions of the prevailing winds, mean temperature and depth of rains, in the climate of London’.