WebJul 28, 2024 · Single Stevenson Screen • Wooden box designed for housing 4 thermometer which record the surface air temperature. • White painted • Open for air passage. [email protected] 12 13. Dry and Wet bulb • Dry: consists of a bulb at one end and is connected with a tube in which the mercury is filled. • Wet : bulb of thermometer is ... WebMar 23, 2024 · A single screen may measure 765 mm high by 610 mm wide by 593 mm deep (30.1 in by 24.0 in by 23.3 in) and a double screen 765 mm high by 1050 mm wide …
Weather Facts: Stevenson Screen weatheronline.co.uk
WebThe door of the screen should always face away from the sun. This means that in the northern hemisphere it should face north. The screen has slats to allow air to circulate freely around the instruments. In the open: The Stevenson screen should not only be away from buildings, but also trees, hills, etc. This will ensure that air is allowed to ... dr arays wvu
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WebJul 7, 2024 · Set the thermometers in front of the fan as before. After 5 minutes record the “wet bulb” temperature reading and the “dry bulb” temperature reading. 4. To determine relative humidity subtract the lower “wet bulb” temperature from the higher “dry bulb ” temperature to determine the difference and compare to the chart. WebStevenson screen is painted white and is mounted on four wooden supports, the bottom of the screen being at 1.22 m (4 ft) above the ground. The screen is set up with its door facing north side (opening downward) so that minimum sunlight would enter while the observer is reading the instruments. The use of the screen is to protect the ... It was designed by Thomas Stevenson (1818–1887), a Scottish civil engineer who designed many lighthouses, and was the father of author Robert Louis Stevenson. The development of his small thermometer screen with double-louvered walls on all sides and no floor was reported 159 years ago in 1864. After … See more A Stevenson screen or instrument shelter is a shelter or an enclosure to meteorological instruments against precipitation and direct heat radiation from outside sources, while still allowing air to circulate freely … See more The interior size of the screen will depend on the number of instruments that are to be used. A single screen may measure 76.5 by 61 by 59.3 cm (30.1 by 24.0 by 23.3 in) and a double screen 76.5 by 105 by 59.3 cm (30.1 by 41.3 by 23.3 in). The unit is either … See more In some areas the use of single-unit automatic weather stations is supplanting the Stevenson screen and other standalone meteorological equipment. See more The traditional Stevenson screen is a box shape, constructed of wood, in a double-louvered design. However, it is possible to construct a screen using other materials and shapes, such … See more The siting of the screen is very important to avoid data degradation by the effects of ground cover, buildings and trees: WMO 2010 recommendations, if incomplete, are a sound basis. In addition, Environment Canada, for example, recommends that the screen be … See more • Article - Temperature measurement and the Stevenson screen • Example of a non-traditional home built Stevenson screen See more dr arbaugh o\\u0027fallon mo