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Topic: Temperature inversion

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	Temperature inversion - Wikipedia, the free encyclopedia
		A temperature inversion is a meteorological phenomenon in which air temperature increases with height for some distance above the ground, as opposed to the normal decrease in temperature with height.
		A temperature inversion that develops aloft as a result of air gradually sinking over a wide area and being warmed by adiabatic compression, usually associated with subtropical high pressure areas.
		With the ceasing of convection, which is normally present in the atmosphere, a number of phenomena are associated with a temperature inversion.
	en.wikipedia.org /wiki/Temperature_inversion (695 words)

	NationMaster.com - Encyclopedia: Temperature inversion
		Surface Temperature Inversion is a phenomena that describes the difference in ambient temperature as the distance to an objects surface varies.
		Inversions frequently develop at or near the earth's surface during clear, calm nights due to the cooling caused by the earth's radiation.
		Mixing, caused by the turbulent action of convection, is hampered by an inversion, since the rising air currents are suppressed from moving in the vertical by the stability of the air within the inversion layer.
	www.nationmaster.com /encyclopedia/Temperature-inversion (1789 words)

	Puget Sound Clean Air Agency - What is an Inversion? (Site not responding. Last check: 2007-10-08)
		Temperature inversions are relatively common in the Puget Sound area.
		In wintertime, a temperature inversion occurs when cold air close to the ground is trapped by a layer of warmer air.
		Inversions also occur during the summer months, but are a product of even hotter upper air trapping warm air close to the ground.
	www.pscleanair.org /airq/inversion.shtml (510 words)

	ScienceDaily: Temperature inversion
		Temperature Sensing By The Circadian Clock (August 24, 2005) -- Dr. Michael Brunner and colleagues have uncovered the molecular mechanism whereby temperature affects circadian patterns in the fungus...
		Temperature inversion -- A temperature inversion is a meteorological phenomenon in which air temperature increases with height for some distance above the ground, as opposed to the normal decrease in temperature with...
		Instrumental temperature record -- The instrumental temperature record shows the fluctuations of the temperature of the atmosphere and the oceans since the invention of...
	www.sciencedaily.com /encyclopedia/temperature_inversion (1846 words)

	Surface temperature inversion - Wikipedia, the free encyclopedia
		It is a specific type of Temperature inversion.
		Favourable conditions for surface temperature inversion are winter nights, where the night is longer, and the ground has more time to cool, calm weather, and clear skies.
		You may have noticed the effect of temperature inversion, when riding a bicycle on a cool winter's night (about 10°C - colder and your skin would find it hard to deferentiate the inversion).
	en.wikipedia.org /wiki/Surface_temperature_inversion (235 words)

	Clean Air Strategic Alliance - Air Quality - Temperature
		This increasing temperature with height is referred to as a temperature inversion.
		Temperature inversions will generally last longer during the winter and fall than in the spring and summer seasons.
		The region of air that extends from the earth's surface to the base of the temperature inversion is referred to as the mixing layer.
	www.casadata.org /whatis/temperature.asp (340 words)

	Temperature inversion (Site not responding. Last check: 2007-10-08)
		A temperature inversion is a meteorological phenomenon in which air...
		temperature inversion, condition in which the temperature of the...
		So a temperature inversion acts as a lid to stop the air continuing to rise.
	www.serebella.com /encyclopedia/article-Temperature_inversion.html (1202 words)

	NationMaster.com - Encyclopedia: Thermal inversion
		Because the higher air is warmer, air that is rising in thermals is prevented by the inversion layer from rising any higher.
		In physics, specifically statistical mechanics, the concept of population inversion is of fundamental importance in laser science because the production of a population inversion is a necessary step in the workings of a laser.
		To understand the concept of a population inversion, it is necessary to understand some thermodynamics and the way that light interacts with matter.
	www.nationmaster.com /encyclopedia/Thermal-inversion (614 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		Winter weather is moderated by the Great Salt Lake to the northwest of the city and the Rocky Mountains to the north and east of the state, which serve as barriers to frigid arctic air.
		It is the result of a temperature inversion caused by heavier cold air settling into the valley, with warmer air passing over the mountains above.
		These temperature inversions can bring extremely cold temperatures, fog, smog, and haze to the valleys, sometimes for more more than two weeks at a time.
	www.worldhistory.com /wiki/T/Temperature-inversion.htm (916 words)

	Glossary of Terms: T
		Temperature is defined as the measure of the average speed of atoms and molecules.
		This boundary is usually the transition zone between the layer of warm water near the surface that is mixed and the cold deep water layer.
		With increasing altitude air temperature drops uniformly with increasing height at an average rate of 6.5° Celsius per 1000 meters (commonly called the Environmental Lapse Rate), until an average temperature of -56.5° Celsius is reached at the top of the troposphere.
	www.physicalgeography.net /physgeoglos/t.html (2106 words)

	Temperature Inversion: A Demonstration (Site not responding. Last check: 2007-10-08)
		Higher temperature gases which are less dense and rise (evidenced by the turning of the yellow only at the bottom).
		When warm water is at the top (temperature inversion situation), sulfur oxides remain in the lower portion of the beaker (evidenced by the yellow only at the bottom).
		The wrap-up discussion should include information regarding temperature inversion in valley areas at night and during times when solar radiation is unable to sufficiently warm the air near the ground.
	www.woodrow.org /teachers/chemistry/1989/20inversion.html (767 words)

	Death of a Temperature Inversion, Alaska Science Forum
		During a temperature inversion, hilltops are warmer than valleys as warm air traps cold air beneath it.
		Temperature inversions cause Fairbanks to be one of a few cities nationwide that sometimes have problems with the buildup of carbon monoxide.
		We stopped at a pullout near Ann’s and noticed that the spruce trees on the hillsides seemed to be shimmering, a mirage-type effect caused by warm air mixing with cold and wreaking havoc with the light rays reflected from the trees.
	www.gi.alaska.edu /ScienceForum/ASF16/1683.html (766 words)

	USATODAY.com (Site not responding. Last check: 2007-10-08)
		The term "temperature inversion" describes an increase in air temperature with height above the earth's surface.
		Inversions caused by warm fronts are often accompanied by rain and inversions over the Plains can contribute to severe thunderstorms and tornadoes.
		If the air near the ground often cools to its dew point temperature, water vapor in the air condenses to form tiny water droplets, which drift in the air to create a layer of radiation fog.
	www.usatoday.com /weather/tg/winvers/winvers1.htm (636 words)

	temperature inversion. The Columbia Encyclopedia, Sixth Edition. 2001-05 (Site not responding. Last check: 2007-10-08)
		Temperature inversion may occur during the passage of a cold front or result from the invasion of sea air by a cooler onshore breeze.
		Overnight radiative cooling of surface air often results in a nocturnal temperature inversion that is dissipated after sunrise by the warming of air near the ground.
		Rising currents of cool air lose their buoyancy and are thereby inhibited from rising further when they reach the warmer, less dense air in the upper layers of a temperature inversion.
	www.bartleby.com /65/te/tempinv.html (262 words)

	Inverse - Wikipedia, the free encyclopedia
		Priority inversion, where a low priority task holds a shared resource that a high priority task needs
		Population inversion, in statistical mechanics, when a system exists in state with more members in an excited state than in lower energy states
		Chromosomal inversion, where a segment of a chromosome is reversed end to end
	en.wikipedia.org /wiki/Inversion (311 words)

	What is a temperature inversion?
		A temperature inversion is a thin layer of the atmosphere where the decrease in temperature with height is much less than normal (or in extreme cases, the temperature increases with height).
		An inversion, also called a "stable" air layer, acts like a lid, keeping normal convective overturning of the atmosphere from penetrating through the inversion.
		The opposite of a temperature inversion is an unstable air layer.
	www.weatherquestions.com /What_is_a_temperature_inversion.htm (185 words)

	Inversions - EPA/QPWS
		If the difference in the density and temperature of the two air parcels is sufficient they will form two distinct layers, with the cold air forming the lower layer and the warmer air becoming the upper layer.
		The temperature inversion occurs when the colder air is not able to penetrate the warmer air.
		The cold air flows and calm conditions that are usually associated with temperature inversions occur most commonly on winter nights.
	www.epa.qld.gov.au /environmental_management/air/air_quality_monitoring/meteorological_data/inversions (287 words)

	AllRefer.com - temperature inversion (Weather And Climate: Terms And Concepts) - Encyclopedia
		temperature inversion, condition in which the temperature of the atmosphere increases with altitude in contrast to the normal decrease with altitude.
		During a temperature inversion, air pollution released into the atmosphere's lowest layer is trapped there and can be removed only by strong horizontal winds.
		Because high-pressure systems often combine temperature inversion conditions and low wind speeds, their long residency over an industrial area usually results in episodes of severe smog.
	reference.allrefer.com /encyclopedia/T/tempinv.html (353 words)

	Temperature Inversion - Search Results - MSN Encarta (Site not responding. Last check: 2007-10-08)
		Temperature Inversion, an increase in temperature with increasing height through a layer in the atmosphere.
		If a gas initially at a moderate temperature is expanded through a valve, its temperature increases.
		Pollutant concentration is reduced by atmospheric mixing, which depends on such weather conditions as temperature, wind speed, and the movement of...
	uk.encarta.msn.com /Temperature_Inversion.html (109 words)

	BlackHillsWeather.com
		When we talk about a temperature inversion, we are speaking about an atmospheric condition that is upside down from the way things normally are.
		Temperature inversions are common in cities located in mountain valleys or nestled up against a mountain range.
		Unfortunately, air quality suffers in an inversion situation because pollutants like dust, smoke and vehicle emissions are trapped close to the ground by the warm layer of air above.
	www.blackhillsweather.com /inversions.html (458 words)

	MO'C Physics Applied-- Thermal Inversions
		For most of the lowest 90 miles or so of the atmosphere, the primary tendency of the temperature of the air is as follows: the higher the elevation above the surface of the earth, the lower the temperature.
		That means that within inversion layers the speed of sound is highest at the top of the layer and lowest at the bottom of the layer.
		Such radiation inversions disappear rapidly when the sun comes up, but during the winter when the radiation inversions that form during the night are most intense the morning commute to work is well underway before dawn.
	users.lmi.net /moc/inversion.html (687 words)

	Temperature Inversion Terminology @ JobsInArt.com (Jobs in Art) (Site not responding. Last check: 2007-10-08)
		The air is expanded during rising with dry adiabatic lapse rate -10oC/1km lifting.
		A period of cloudiness is followed by sunny weather as the clouds disperse.
		The signal, still more than powerful enough to receive even at hundreds or thousands of miles or kilometres, would normally be refracted up and away from the ground-based antenna, but is now refracted back down instead.
	www.jobsinart.com /encyclopedia/Temperature_inversion (575 words)

	Learn more about Temperature inversion in the online encyclopedia. (Site not responding. Last check: 2007-10-08)
		A temperature inversion is a meteorological phenomenon where warm air gets trapped above cold, preventing air circulation.
		Some of this energy is then re-radiated as flbody radiation, and due to the average temperatures involved, much of this is in the infrared.
		It is most commonly created by the movement of air masses of different temperature moving over each other.
	www.onlineencyclopedia.org /t/te/temperature_inversion.html (528 words)

	Temperature inversion (Site not responding. Last check: 2007-10-08)
		With the disruption of normal convection a of phenomena are associated with a temperature One common effect is the general "stillness" the air as is dirty or foggy which can no longer be pulled away the surface.
		Inversion of gravity and bathymetry in oceanic regions for long-wavelength variations in upper mantle temperature and composition final report to the...
		An inversion of gravity and topography for mantle and crustal structure on Mars (SuDoc NAS 1.26:204591)
	www.freeglossary.com /Inversion_layer (545 words)

	Temperature Inversion--What Causes it?, Alaska Science Forum (Site not responding. Last check: 2007-10-08)
		That is the reason why, at the same temperature, it feels warmer outside under a cloudy sky than it does when the sky is clear.
		Thus an inversion forms, an inversion being the condition of higher temperature at altitude than at ground level.
		The strongest inversions occur in winter; weaker ones occur in summer when the air is still.
	www.gi.alaska.edu /ScienceForum/ASF0/007.html (193 words)

	National Weather Service - NWS Salt Lake City
		The situation of having warm air on top of cooler air is referred to as a temperature inversion, because the temperature profile of the atmosphere is "inverted" from its usual state.
		A strong inversion implies a substantial temperature difference exists between the cool surface air and the warmer air aloft.
		Surface temperature inversions play a major role in air quality, especially during the winter when these inversions are the strongest.
	www.wrh.noaa.gov /slc/climate/TemperatureInversions.php (625 words)

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