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Meteorology Terminology
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Atmospheric Pressure
The force exerted by the weight of the atmosphere above a surface.
Coriolis Effect
The deflection of moving objects caused by the rotation of Earth.
Dew Point
The temperature at which air becomes saturated with moisture and dew can form.
El Niño
A periodic warming of the central and eastern tropical Pacific Ocean, affecting global climate patterns.
Front
A boundary separating two different air masses, which can cause changes in weather patterns.
Humidity
The amount of water vapor present in the air.
Isotherm
A line on a weather map connecting points of equal temperature.
Jet Stream
A narrow band of powerful, high-altitude, upper-level westerly winds.
Mesosphere
The third layer of the atmosphere, directly above the stratosphere and below the thermosphere.
Occluded Front
A composite front produced when a cold front overtakes a warm front, lifting the warm air mass off the ground.
Precipitation
Any form of water, liquid or solid, that falls from the atmosphere and reaches the ground.
Stratosphere
The second layer of Earth's atmosphere, just above the troposphere and below the mesosphere.
Tornado
A violently rotating column of air extending from a thunderstorm to the ground.
Troposphere
The lowest layer of Earth's atmosphere, where nearly all weather conditions take place.
Visibility
The distance one can clearly see, which is affected by weather conditions such as fog, rain, or snow.
Vortex
A spinning, often turbulent flow of fluid.
Weather Front
The boundary separating two different types of air masses, which has a noticeable change in temperature, humidity, and wind direction.
Wind Chill
An index that indicates how cold the air feels on human skin due to wind speed.
Anemometer
An instrument used to measure wind speed.
Radiosonde
A battery-powered telemetry instrument carried into the atmosphere by a weather balloon to collect data on atmospheric parameters.
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