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| Born | 22 July 1818 Edinburgh |
| Died | 8 May 1887 | Age 68 Edinburgh |
Sir Thomas Stevenson 1864
The international weather station was invented by the British engineer and meteorologist Sir Thomas Stevenson (1818-1887), the father of Robert Louis Stevenson.The Stevenson Screen is the standard used by the World Meteorological Organization. The screens contain a dry bulb thermometer and a wet bulb thermometer. Larger screens also include minimum and maximum thermometers and optional recording instruments: thermograph and/or a hygrograph, or a thermohygrograph.
Siting
The unit and sensors should also be positioned in open space away from any nearby potential sources of heat such as buildings, airports and brick walls, where free circulation of air can occur, and over a natural surface, grass is recommended as other surfaces such as concrete can cause significant error leading to all time high temperatures being recorded inaccurately.
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Tags: weather climate temperature
