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humidity

(Encyclopedia) humidity, moisture content of the atmosphere, a primary element of climate. Humidity measurements include absolute humidity, the mass of water vapor per unit volume of natural air;…

Winter Indoor Comfort and Relative Humidity

Effects of Dry Air on the BodyApparent Temperature for Values of Room Temperature and Relative Humidity Compared to summer when the moisture content of the air (relative humidity) is an…

hygrometer

(Encyclopedia) hygrometerhygrometerhīgrŏmˈətər [key], instrument used to measure the moisture content of a gas, as in determining the relative humidity of air. The temperature at which dew or frost…

psychrometer

(Encyclopedia) psychrometerpsychrometersīkrŏmˈĭtər [key], one of many instruments used for measuring the water vapor content or relative humidity of the atmosphere. It consists of two identical…

anticyclone

(Encyclopedia) anticyclone, region of high atmospheric pressure; anticyclones are commonly referred to as “highs.” The pressure gradient, or change between the core of the anticyclone and its…

Mammoth Cave National Park

(Encyclopedia) Mammoth Cave National Park, 52,830 acres (21,396 hectares), central Kentucky, authorized 1926, est. 1941. Located in a hilly, forested region, it offers numerous outdoor activities. It…

cyclone

(Encyclopedia) cyclone, atmospheric pressure distribution in which there is a low central pressure relative to the surrounding pressure. The resulting pressure gradient, combined with the Coriolis…

ventilation

(Encyclopedia) ventilation, process of supplying fresh air to an enclosed space and removing from it air contaminated by odors, gases, or smoke. Proper ventilation requires also that there be a…

Weather: Moisture and Humidity

Moisture and HumidityWeatherPartly to Mostly CloudyMoisture and HumidityIn the CloudsTen Major Cloud TypesForecasting by Clouds In all my years of teaching and talking about the weather, I have…