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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Humidex ： ウィキペディア英語版 Humidex The humidex (short for humidity index) is an index number used by Canadian meteorologists to describe how hot the weather feels to the average person, by combining the effect of heat and humidity. The humidex is a dimensionless quantity based on the dew point, but it is equivalent to dry temperature in degrees Celsius (omitting degree symbol '°'). For example, if the temperature is , and the calculated humidex is 40, then it indicates the humid heat feels approximately like a dry temperature of . According to the Meteorological Service of Canada, a humidex of at least 30 causes "some discomfort", at least 40 causes "great discomfort" and above 45 is "dangerous". When the humidex hits 54, heat stroke is imminent. The current formula for determining the humidex was developed by J. M. Masterton and F. A. Richardson of Canada's Atmospheric Environment Service in 1979. Humidex differs from the heat index used in the United States in being derived from the dew point rather than the relative humidity. The record humidex in Canada occurred on 14 July 1961, when Castlegar, British Columbia, recorded a humidex of 53.4.〔(【引用サイトリンク】National Climate Data and Information Archive, Castlegar A )〕 This value was almost beaten on 25 July 2007 when Carman, Manitoba, hit 53.0.〔(Cbc.ca ) 〕 == The humidex computation formula == When the temperature is and the dew point is , the humidex is 34 (note that humidex is a dimensionless number, but that the number indicates an approximate temperature in °C). If the temperature remains 30 °C and the dew point rises to , the humidex rises to 42. The humidex is higher than the U.S. heat index at equal temperature and relative humidity. The humidex formula is as follows:〔(【引用サイトリンク】title=Calculation of the 1981 to 2010 Climate Normals for Canada )〕 :$\backslash text\; =\; T\_\backslash text\; +\; 0.5555\; \backslash left(e^\; -\; \backslash frac\; -\; 10\backslash right)$ where * $\backslash scriptstyle\; T\_\backslash text$ is the air temperature in °C * $\backslash scriptstyle\; T\_\backslash text$ is the dewpoint in K The humidity adjustment effectively amounts to one Fahrenheit degree for every millibar by which the partial pressure of water in the atmosphere exceeds 10 millibars. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Humidex」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.