WebFeb 22, 2024 · To measure outdoor air temperature on land, the setup is simple. A thermometer is placed inside an enclosure such as the common wooden box-shaped Cotton Region Shelter, which is the American version of the Stevenson screen, developed by Scottish lighthouse engineer and meteorologist Thomas Stevenson in the 19th century. WebJul 11, 2013 · Stevenson screen: weather instruments tour. These white louvered boxes can be found at every observing site. They protect the temperature sensors from being influenced by direct or reflected sunlight. Stevenson screens are always painted white to better reflect the sun's rays. The louvered sides allow outside air to flow around the …
The 5 Characteristics of a Stevenson Screen - UWSZone
WebMar 14, 2024 · A Stevenson screen (also known as an instrument shelter) is a meteorological screen to shield instruments against precipitation and direct heat … 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 as a pyramid. The World Meteorological Organization (WMO) agreed standard for the height of the thermometers is between … 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 siting of the screen is very important to avoid data degradation by the effects of ground cover, buildings and trees: WMO 2010 … See more • Article - Temperature measurement and the Stevenson screen • Example of a non-traditional home built Stevenson screen See more It was designed by Thomas Stevenson (1818–1887), a Scottish civil engineer who designed many lighthouses, and was the father of author 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 … 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 ban presa 90/90
Measurements of natural airflow within a Stevenson …
WebFeb 19, 2015 · The results show that the medium-sized Stevenson screen tended to overheat daily maximum air temperatures (0.54 °C on yearly average) and also air … WebGeneral definitions Air Temperature: Air temperature is measured in a shaded enclosure (most often a Stevenson Screen) at a height of approximately 1.2 m above the ground. Maximum and minimum temperatures for the previous 24 hours are nominally recorded at 9 am local clock time. WebFeb 19, 2015 · The results show that the medium-sized Stevenson screen tended to overheat daily maximum air temperatures (0.54 °C on yearly average) and also air temperatures recorded at 1300 UTC. The differences on daily minimum air temperatures were negligible (−0.11 °C on yearly average). ban preterit