humidex


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humidex

Canadian a scale indicating the levels of heat and humidity in current weather conditions
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
O Indice Humidex - capaz de revelar a sensacao termica real - obtido foi de 42[grados]C, considerado um desconforto intenso, sendo desaconselhada a pratica de exercicios.
Analysis of the UK Meteorological Office climate record for Doha last year, seen by the Guardian, showed that according to the Humidex measure, it was not safe for an acclimatised person to do even moderately strenuous work outside, for 1,176 hours, including night time.
where H is the humidex; Ta is the air temperature; and dew is the dew point in Kelvin.
(1) In Quebec, extreme heat is defined as a temperature [greater than or equal to]30[degrees]C and a humidex value [greater than or equal to]40 (2) and heat wave definitions vary according to region (maximal and minimal temperature thresholds are [greater than or equal to]31[degrees]C and [greater than or equal to]18[degrees]C; [greater than or equal to]33[degrees]C and [greater than or equal to]20[degrees]C for at least 3 days for Eastern Townships and Montreal/Laval respectively).
To capture thermal sensation, we use two terms: quadratic humidex ([degrees]C) and quadratic wind speed (km/hour), as well as their interaction to capture the cooling effects of the wind.
The weather bureau also said the humidex may climb into the 30s.
In a recent study [12] the authors also found a significant better fit of three-parameter AT (the version which also accounts for the extra effect of wind speed, called [AT.sub.sha] in this study) with UTCI than other simple two-parameter indices, such as the Heat Index, the Humidex, or the Wet-Bulb Globe Temperature.
But sitting in my air-conditioned office on a day when the humidex reads 40 degrees Celsius, I reflect on my short (and colder) time in the Arctic.
The air can be either humid or extremely dry during heat waves; a combination of high temperature and high humidity can produce a humidex value (a measure of the body's perception of air temperature) in the high 40s ([degrees]C), which is extremely dangerous.