absolute humidity


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

absolute humidity

[′ab·sə‚lüt hyü′mid·ə·dē]
(physics)
The ratio of the mass of water vapor in a sample of air to the volume of the sample.

absolute humidity

The mass of water vapor per unit volume of air.

absolute humidity

The mass of water vapor present per unit volume of space (i.e., the density of water vapor, usually expressed in gm/m3). It is the actual amount of water, by weight, in water vapor in a given volume of space. Also known as vapor concentration.
References in periodicals archive ?
Based on preliminary analyses, expert opinion and personal observations, we chose minimum daily temperature, average daily absolute humidity, average daily wind speed, and total daily precipitation lagged one day for our candidate model sets.
They first examined influenza in New York, Washington, Illinois, Arizona and Florida, and discovered that the absolute humidity conditions in those states all produced model-simulated seasonal outbreaks of influenza that correlated well with the observed seasonal cycle of influenza within each state.
Correction of the problem raised the absolute humidity quickly.
2] concentration and absolute humidity are recorded.
While relative humidity remained fairly constant, absolute humidity (the actual measure of existent water grains per pound of air) varied widely, from a low of 74 grains in January to a high of 132 grains in July [ILLUSTRATION FOR FIGURE 4 OMITTED], during which the moisture in the blast air exceeds 1200 gal/day.
The outer air streams differ considerably from one another in terms of temperature and absolute humidity (air streams A and C in diagram).
Environmental testing normally involves relative humidity, while tests of absolute humidity are largely restricted to process industries, says Mike Scelzo, VP of marketing at Panametrics, Waltham, Mass.
Senses change in humidity as well as absolute humidity.
By simultaneously measuring the ambient temperature humidity parameters, relative humidity, absolute humidity, volume and mass ratios are calculated by the OptiSonde with high precision.
Relative humidity is not absolute humidity or vapor pressure.
Non-desiccated ammonium nitrate inflators are being recalled in several phases, starting with the oldest cars and those sold or registered in regions with high absolute humidity.