Category
page 1Meteorological indices
ultraviolet index
measurement of strength of sunburn-producing ultraviolet (UV) radiation
wind chill
lowering of body temperature due to the passing-flow of lower-temperature air
degree day
measure of heating or cooling used in agriculture
humidex
thumb|upright=2|Plot of humidex depending on temperature and relative humidity
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 term humidex was coined in 1965. The humidex is a nominally dimensionless quantity (though generally recognized by the public as equivalent to the degree Celsius) based on the dew point.
heat index
temperature index that accounts for the effects of humidity
growing-degree day
heuristic tool in phenology
Palmer Drought Index
measurement of dryness
wet-bulb globe temperature
apparent temperature used to estimate the effect of temperature, humidity, wind speed, etc.; weighted average of wet-bulb temperature (weight 7), globe thermometer temperature (weight 2), and dry-bulb temperature (weight 1)
Chilling requirement
cold weather requirement in agriculture
Keetch–Byram Drought Index
Estimate of the soil moisture deficit
Forest fire weather index
estimation of the risk of wildfire
Haines Index
estimation of the risk of wildfire