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Feels Like: Difference between revisions
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=Introduction= | =Introduction= | ||
''Feels Like'' is a concept often quoted in weather forecasts, as the name suggests it attempts to quantify what | ''Feels Like'' is a concept often quoted in weather forecasts, as the name suggests it attempts to quantify what human skin detects as the temperature, taking into account any warming or cooling effect of exposure to different humidity levels, high wind, or shade/sunshine. The best way to quantify that has been discussed in many scientific papers following on from experimentation in various laboratories, and so different formulae have been used at different times as more is learnt about how the body reacts to different conditions. | ||
All formulae involve the air temperature and at least one of the following: | |||
* (relative) humidity | * (relative) humidity | ||
* wind (speed) | * wind (speed) | ||
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The rest of this article was written | The rest of this article was written for versions of Cumulus that did not report '''JAG/TI feels like''', and uses JavaScript for deciding whether to display Heat Index, Apparent Temperature, or Wind Chill, based on the current weather conditions. It was designed to work with standard Cumulus web templates that produce HTML and do not use PHP. | ||
Version 3.6.0 and all earlier versions of MX, and versions of Cumulus 1 since those shown, support earlier definitions for feels like: | |||
*From Version 1.9.1 (6 April 2011) [[Apparent_temperature]], this index was introduced by Steadman in 1971 who later revised his formula and many implementations use his later 1998 formula. Cumulus adopted the Australian Bureau of Meteorology implementation of Steadman formula. | *From Version 1.9.1 (6 April 2011) [[Apparent_temperature]], this index was introduced by Steadman in 1971 who later revised his formula and many implementations use his later 1998 formula. Cumulus adopted the Australian Bureau of Meteorology implementation of Steadman formula. | ||
*Although [[Heat_index]] was available in earlier versions, it was improved from version 1.9.0 (11 Sept 2010) in Cumulus 1 with a new formula covering a greater range of humidities accurately. | *Although [[Heat_index]] was available in earlier versions, it was improved from version 1.9.0 (11 Sept 2010) in Cumulus 1 with a new formula covering a greater range of humidities accurately. | ||
