meteorological terms library

 

Meteorological terms helps us to explain the weather, climate, and phenomena that occurs in our atmosphere. Learn more meteorological terms and how they are used here.

Featured Article:  Monsoon

Monsoon, a wind system in which the prevailing wind direction is reversed from season to season. See more »

What is relative humidity and how does it affect how I feel outside?

What is relative humidity and how does it affect how I feel outside?

We hear about humidity in just about every weather report on the nightly news. There are several different ways meteorologists measure humidity, but relative humidity is the most common measurement. What is relative humidity, though? Find out in this

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American Meteorological Society

American Meteorological Society, a scientific, educational, and professional society of meteorologists and others interested in the atmospheric sciences.

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Atmosphere

Atmosphere, the mass of gases surrounding a planet or any other celestial object.

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Blizzard

Blizzard, a blinding snowstorm with cold, high winds. In severe blizzards, the wind speed typically is more than 45 mph (72 km/h), the temperature below 10 F.

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Chinook

Chinook, the American name for a foehn—a warm, dry wind that blows down a mountainside.

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Climate

Climate, the average condition of the weather in an area for a period of years.

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Condensation

Condensation, the formation of a liquid from a vapor or gas. It occurs in the formation of clouds and when cooled, water vapor turns into dew or rain.

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Dew

Dew, a deposit of moisture that forms on the surface of a cool object. Dew is most commonly seen on leaves and grass in the early morning.

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Dew Point

Dew Point, the temperature at which water vapor in air will begin to condense—that is, change into a liquid or solid.

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Drought

Drought, or Drouth, an extended dry period, with rainfall far below the average.

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Fog

Fog, a cloud that occurs at the earth's surface. It usually consists of tiny water droplets suspended in the air, but in very cold conditions it may consist of ice particles.

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Frost

Frost (also called Hoarfrost and White Frost), ice crystals produced by the freezing of water vapor on the ground, on objects near the ground, or on windows.

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Hail

Hail, lumps of ice that fall from thunderstorm clouds. Individual lumps, called hailstones, are usually round and have a rough surface.

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Haze

Haze, a slight clouding of the atmosphere caused by the suspension in the air of dust, soot, or other solid matter.

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Horse Latitudes

Horse Latitudes, subtropical belts of high atmospheric pressure at about 30 latitude in the Northern and Southern hemispheres.

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Humidity

Humidity, the water-vapor content of the air. Absolute humidity is the weight of the water in a given volume of air.

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Indian Summer

Indian Summer, a period of summerlike weather that occurs between the first frost of autumn and the onset of winter, notably in the central and Atlantic coast states and in Canada.

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Isotherm

Isotherm, in geography, a line drawn on a map connecting places that have the same average temperature for a given period of time.

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Maelstrom

Maelstrom, or Mosken-straumen, a tidal whirlpool between two of the Lofoten Islands, off the northwest coast of Norway.

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Meteorology

Meteorology, the science of the atmosphere and its phenomena. It has two major divisions: weather and climate.

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