humidity index

humidity index

[hyü′mid·əd·ē ‚in‚deks]
(climatology)
An index of the degree of water surplus over water need at any given station; it is calculated as humidity index = 100 s/n, where s (the water surplus) is the sum of the monthly differences between precipitation and potential evapotranspiration for those months when the normal precipitation exceeds the latter, and where n (the water need) is the sum of monthly potential evapotranspiration for those months of surplus.
References in periodicals archive ?
These data were then converted to the black globe humidity index (B GHI) to characterize the environment of the pigs, according to BUFFINGTON et al.
of mortality and relationships between mortality and temperature- humidity index in dairy cows.
Firstly, the 3 factor data of soil type, soil parent material and soil thickness were obtained based on 2-class forest resource survey, and other factor data, which included elevation, slope, aspect, surface curvature, humidity index, and solar radiation index, were extracted from DEM (Digital Elevation Model).
This statistical interpolation used to be called the "temperature humidity index," but its simpler moniker has raised its stature to match its wintery cousin: the wind chill factor.
During heat stress, the environmental parameters of AT and RH in general and temperature humidity index (THI) in particular, have been reported to be an invaluable tool in the presumptive diagnosis of the animal state of health, and is also relevant in evaluating the adaptability of the animal (9,10).
Ta = dry bulb temperature ([degrees]C), HR = relative air humidity (%), WS = wind speed (m/s), THI = temperature and humidity index, BGHI = Black globe-humidity index, TCI = Thermal Comfort Index, precipitation (mm).
For more information, refer to the Temperature Humidity Index on AFAA's Fitness Gets Personal[R] card H7.
Plasma concentration of cortisol and serum concentrations of metabolites and maximum temperature humidity index (max THI) in Korean cattle steers for several different months.
The temperature and humidity index (THI), calculated through the combination of temperature and humidity (Thom, 1959) is one of the environmental factors that has been related to the thermal comfort of animals, and may or may not influence the productive and reproductive performance of cattle (Azevedo et al.
To test her observation, she checked the New York heat and humidity index for every day from January 1993 to February 1994 and compared it to the number of women who entered preterm labor.