Relative Humidity indicates how moist the air is
Relative humidity may be defined as the ratio of the water vapor density (mass per unit volume) to the saturation water vapor density, usually expressed in percent:
Relative Humidity (RH) = ...
Relative Humidity - A dimensionless ratio, expressed in percent, of the amount of atmospheric moisture present relative to the amount that would be present if the air were saturated.
Relative humidity The (dimensionless) ratio of the actual vapor pressure of the air to the saturation vapor pressure. The relative humidity is usually expressed in per cent, and can be computed from psychrometric data. See humidity.
Relative humidity
Is a traditional indicator of the air's moisture content. It is the ratio of the amount of moisture actually in the air to the maximum amount of moisture which the air could hold at the same temperature.
relative humidity = (the actual water vapor content of the air) divided by (the maximum water capacity for that temperature)
Warm air has the capacity to hold more water vapor than cool air so relative humidity changes with changing temperature ...
relative humidity
At a given ambient air temperature, the dimensionless ratio between the actual vapor pressure of air to the saturation vapor pressure. Corresponding ratios of mixing ratio can be substituted.
relative humidity - The ratio of the vapor pressure to the saturation vapor pressure with respect to water.
Relative Humidity-The ratio of the air's water vapor content to its water water vapor capacity.
Relative Humidity - a measure of the water vapor content of the air at a given temperature; the amount of moisture in the air as compared with the amount that the air could contain at the same temperature, expressed as a percentage ...
RELATIVE HUMIDITY A type of humidity that considers the ratio of the actual vapor pressure of the air to the saturation vapor pressure. It is usually expressed in percentage.
Relative humidity - A ratio of the amount of water vapor that the air is holding to the amount of water vapor the air can hold, which depends on temperature.
Ridge - An area of high pressure. An area of anticyclonically curving winds.
Relative humidity - the ratio of vapour pressure to the vapor pressure that would happen if the air were saturated without changing the temperature.
RELATIVE HUMIDITY: The amount of water vapor in the air, compared to the amount the air could hold if it was totally saturated. (Expressed as a percentage).
Relative Humidity- the amount of water vapor in the air as compared to the percent of the amount of water vapor it would take to saturate the air.
relative humidity: ratio of the actual vapor pressure of the air to the saturation vapor pressure for the surrounding air temperature. In other words, how much water the air is holding divided by how much water the air is capable of holding.
Relative humidity The ratio of the amount of water vapor actually in the air compared to the amount of water vapor the air can hold at that particular temperature and pressure.
Relative Humidity - A ratio, expressed in percent, of the amount of atmospheric moisture present relative to the amount that would be present if the air were saturated.
Relative humidity - An estimate of the amount of moisture in the air relative to the amount of moisture that the air can hold at a specific temperature.
RELATIVE HUMIDITY (RH)- The amount of moisture in the air as a ratio to the maximum amount of moisture that can be evaporated into the air at a constant temperature.
Relative humidity A measure of how close air is to saturation at a specific temperature, always expressed as a percentage.
relative humidity—The ratio of the existing amount of water vapor in the air at a given temperature to the maximum amount that could exist at that temperature; usually expressed in percent.
relative vorticity—See vorticity.
Relative Humidity - The ratio of water vapor contained in the air compared to the maximum amount of moisture that the air can hold at that particular temperature and pressure.
Ridge - An elongated area of high pressure.
Relative Humidity is one of several methods used to express the water vapor content of the air.
It is the ratio between the amount of water vapor the air is actually holding at a certain temperature and expressed in percentage.
Relative humidity is the ratio of the current vapor pressure of water in any gas (especially air) to the equilibrium vapor pressure, at which the gas is called saturated at the current temperature, expressed as a percentage.
RELATIVE HUMIDITY: The percent of the amount of water vapor in the air compared to the capacity for water vapor in the air.
RIDGE: An elongated area of high pressure in the atmosphere.
Relative Humidity- A measure of the amount of water vapor actually held by a specific volume of air in comparison to the maximum water vapor that air could hold at a constant temperature.
Relative humidity: the ratio of the actual water vapor pressure at a given time to the vapor pressure that would occur if the air were saturated at the same ambient temperature.
relative humidity means the air holds half the water vapor that it is capable of holding; 100
relative humidity means the air holds all the water vapor it can. At 100 ...
RELATIVE HUMIDITY - Percentage scale based on the difference between temperature and dewpoint. The humidity at 100 percent means the air is saturated as in a cloud or rain. Is often high in tropical regions and very low in deserts. Also called RH.
The change in relative humidity over a given period of time; generally between late evening and sunrise. The moisture change in the fine fuels during this period is directly related to the amount of humidity recovery.
Hummock ...
spring green-up or after fall color, and the National Fire Danger Rating System (NFDRS) is high to extreme and the following forecast weather parameters are forecasted to be met:
1) a sustained wind average 15 mph or greater
2) relative humidity less ...
It gives the current weather condition in one word (cloudy, rain, snow, fog, etc.), the temperature and dew point in Fahrenheit, the relative humidity, wind speed and direction, and finally additional information (wind chill, heat index, ...
Hair hygrometer A hygrometer in which the sensitive element is a strand or strands of human hair, the length of which is a function of the relative humidity of the air.
Popularly, it is used synonymously with relative humidity.Humidity RecoveryThe change in relative humidity over a given period of time; generally between late evening and sunrise.
RAWINSONDE An upper air observation that evaluates the winds, temperature, relative humidity, and pressure aloft by means of a balloon-attached radiosonde that is tracked by a radar or radio direction-finder.
Diurnal CyclesVariations in meteorological parameters such as temperature and relative humidity over the course of a day which result from the rotation of the Earth about its axis and the resultant change in incoming and outgoing radiation.
Many aerosols increase in size with increasing relative humidity due to deliquescence, drastically decreasing visibility.
heat index (HI)An index that combines air temperature and relative humidity to determine an apparent temperature-how hot it actually feels.
Fog is easily distinguished from haze by its higher relative humidity (near 100%, having physiologically appreciable dampness) and gray color. Haze does not contain activated droplets larger than the critical size according to Köhler theory.
What's the difference between Humidity and Relative Humidity?
A.
(1) Absolute Humidity, often just referred to as 'the humidity', ...
Heat Index: The Heat Index (HI) or the "Apparent Temperature" is an accurate measure of how hot it really feels when the Relative Humidity (RH) is added to the actual air temperature.
The LCD summarizes temperature, relative humidity, precipitation, cloudiness, wind speed and direction observation. Most monthly publications also contain the 3-hourly weather observations for that month and an hourly summary of precipitation.
The rate at which the temperature of saturated air (air at 100% relative humidity) will vary as it is raised or lowered through the atmosphere. The SALR varies with temperature and pressure, however it is always less than the DALR.
HUMIDITY The amount of water vapor in the air. It is often confused with relative humidity or dew point. Related terms: absolute humidity, relative humidity, and specific humidity ...
Dry Air
Air of low relative humidity.
Dry Snow
Snow from which a snowball cannot readily be made and which has a temperature less than zero degrees Celsius.
humidity: is the quantity of water vapor in the air. Relative humidity is the ration between the actual quantity of watervapor and the amount of watervapor that the air can hold at a given temperature.
Psychrometric Tables These are tables used by meteorologists to determine measures of atmospheric water content (dewpoint, vapor pressure, or relative humidity) from the observed dry-bulb and wet-bulb temperature values taken with a psychrometer.
Psychrometer- An instrument used to measure relative humidity, consisting of a wet-bulb thermometer and a dry-bulb thermometer.
Hygrometer - An instrument designed to measure relative humidity.
Hygroscopic Nuclei - Condensation nuclei having a high affinity for water, such as salt particles.
Humidity - Generally, a measure of the water vapor content of the air. Popularly, it is used synonymously with relative humidity.
USA Immigration Services ...
HUMIDITY: Water vapor content of the air; may be expressed as absolute humidity, specific humidity, relative humidity, or mixing ratio.
Humidity: Generally, some measure of the water vapour content of the air. See also, absolute humidity, specific humidity, relative humidity.
DIURNAL Pertaining to actions or events that occur during a twenty-four hour cycle or recurs every twenty-four hours. Meteorological elements that are measured diurnally include clouds, precipitation, pressure, relative humidity, temperature, ...
The subsiding air warms up, its relative humidity falls, and fine weather is the usual accompaniment of subsidence, though fog, stratus or stratocumulus clouds may occur under certain conditions. The contrary case is called convergence.
 See also: Humidity, Temperature, Air, Water, Pressure
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