meteorology
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| Front | Boundary between air masses of different densities, and usually different temperatures.
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| High pressure | an area of high pressure that rotates clockwise in the northern hemisphere and counter clockwise in the southern hemispehere.
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| Low pressure | a weather system in which air pressure decreases toward the center. This is usually caused by a mass of warm air being forced upward by cold air. Such systems are usually associated with unsettled weather.
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| Cold front | a warm -cold air boundary with the cold air advancing
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| Warm front | a warm-cold air boundary with the warm air advancing
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| isobar | A line drawn on a weather map connecting points of equal air pressure;delineates high-and low-pressuer areas. When close together ,isobars indicate areas of strong winds.
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| isotherm | lines on a map connecting the all places with the same temperature
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| millibars of Mercury | a metric unit of air pressure measurememt
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| barometric pressure | is caused by the weight of the air pressing down on the Earth
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| meteo-grams | A meteogram is a time cross-section of data for a specific surface reporting station.
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| solar radiation | the energy produced by the sun
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| terrestrial radiation | The portion of the natural background radiation that is emitted by naturally occurring radioactive materials, such as uranium, thorium, and radon in the earth.
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| dew point | measure of humidity given in terms of temperature at given in terms of temerature at which dew will start to form
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| saturation | point at which the amount of water vapor in the air is greatest for the airs's temerature and pressure
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| humidity | the amount of moisture in the air.
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| cyclone | an area of low=atmosheric pressure with wins blowing around it, conterclockwise in the southern hemisphere
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| anticyclone | an area of high pressure that rotates clockwise in the northern hemisphere and counter clockwise in the southern hemispehere.
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| meso-scale | in meteorology weather systems and events up to about 250 miles across
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| anemometer | use to measure wind speed
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| Doppler radar | radar that measures speed and direction of a moving onject, such as wind
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| infrared- lighting | electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
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| sisible satellite water vapor imaging | (blank)
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| weather radar | (blank)
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| sheer winds | (blank)
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| hail | balls of ice that grow in thunderstorm updrafts
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| water spouts | a tornado or weaker vortexfrom the bottom of a cloud to the surface of a body of water
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| jet stream | a narrow band of upperatomsphere wind with speeds of greater than 57 miles an hour
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| wind | (blank)
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| singularities | (blank)
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| absolute humidity | the mass of water vapor in a given volume of air
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| Altimeter | A secial type of aneroid barometer used in airplanes to measure altitudes
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| back door cold front | a cold front that moves from the northeast instead of the more usual morthwest or north, in the eastern united states
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| Barometer | a device used to measure air pressur
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| Beaufort Wind scale | scale used to classify wind speed, divised in 1805 by British Admiral Francis Beaufort to classify winds at sea
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| Climate | the average type of weather over a few hours
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| El Nino | disruption of oceans atmosphere
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| La Nina | unusual cold ocean temp.in the Tropical ocean climate
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| Dendrochronology | study of tree rings to predict weather
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| Pollen | plant seeds sparce in drought plentifull in normal weather and sparce in cold times
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| paleoclimatology | ancient climate
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| moisture index | moniters moisture used to forcast drought
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| Microclimate | climate conditions in a smaller aria
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| Isotherms | lines on weather map connect with same temp
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| Tropical | 30 deg.N to 30 deg S. lots of rain, worm climate, rainforest
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| temperate | mid lat 30deg - 60 degres to north and south
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| Desert | little to no rain, any lat, depends on other factors
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| Polar | cold tundra 60-90 degrees
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| Marine | winter painy and mild summer hot dry
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| Humid | close to tropic, all year rain fall, winters are short mild and summer hot humid
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| Arid | plains and tundra
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| Rain shadow | an area where very little rain fall occures on the leeward side of a mountain
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| radiator | any material that
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| terrestrial radiation | electromagnetic energy given off by the surface of the earth
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| windward side | precipitation occurs on this side of the mountain
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| climate | average conditions of the atmosphere near the earth's surface over a long period of time, taking into account temperatures, precipitation, humidity, wind, barometric pressure, and other phenomena.
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| horse latitudes | two belts of latitude where winds are light and the weather is hot and dry. They are located mostly over the oceans, at about 30° latitudes
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| topography | (blank)
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| Climatology | the science of climate and its relation to plant and animal life, is important in many fields, including agriculture, aviation, medicine, botany, zoology, geology, and geography.
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| doldrums or equatorial belt of calms | area around the earth centered slightly north of the equator between the two belts of trade winds.
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| global warming | the gradual increase of the temperature of the earth's lower atmosphere as a result of the increase in greenhouse gases since the Industrial Revolution.
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