Troposphere Lower part of the atmosphere, extending from the surface up to a height varying from about 7 to 9 km at polar regions to approximately 17 km in tropics.
Troposphere: From the Greek word ""ρέπω" meaning to turn or change.
troposphere"That portion of the atmosphere from the earth's surface to the tropopause; that is, the lowest 10-20 km (6-12 mi) of the atmosphere; the portion of the atmosphere where most weather occurs.
troposphere
The lowest region of the earth's atmosphere that extends from the surface to the tropopause, located at an altitude of 6 to 16 km (4 to 10 mi).
Troposphere: The layer of the atmosphere from the Earth's surface up to the tropopause, characterized by decreasing temperature with height, appreciable vertical wind motion and considerable water vapour content.
Troposphere-The lowest layer of the atmosphere marked by considerable turbulence and a decrease in temperature with height. This layer stretches from the surface to approximately 10km. Weather on earth is created here.
Troposphere - The layer of the atmosphere from the ground to around 33,000 feet (10 kilometers). This is where much of the weather we experience occurs.
Volume - The amount of space occupied by a substance or object.
Troposphere
The lowest region of the atmosphere in which all the Earth's weather takes place
Typhoon ...
Troposphere - the portion of the atmosphere which extends outward about 10 to 20 km from the earth's surface, and in which generally temperature decreases rapidly with altitude, clouds form, and convection is active ...
TROPOSPHERE The lowest layer of the atmosphere located between the earth's surface to approximately 11 miles (17 kilometers) into the atmosphere. Characterized by clouds and weather, temperature generally decreases with increasing altitude.
troposphere: the layer of the atmosphere that goes from the earth's surface to the tropopause. The lowest 6-16 kilometers (4-10 miles), where all the earth's weather takes place.
Troposphere - The lowest portion of the atmosphere which lies next to the earth's surface where most weather occurs.
Typhoon - See Cyclone ...
Troposphere The home of the biosphere; the lowest layer of the homosphere, containing approximately 90 percent of the total mass of the atmosphere; extends up to the tropopause, defined by a temperature of -70 degrees (F); ...
TROPOSPHERE- The lowest layer of the atmosphere where the temperature decreases with height. Most of earth's weather occurs in this layer.
TROUGH -An elongated area of low pressure at the surface or aloft.
Troposphere Lowest thermal subdivision of the atmosphere in which air temperature normally drops with altitude; the site of most weather.
Turbulence Irregular, apparently random motions of a fluid such as air or water.
U ...
Troposphere The lower atmosphere, to a height of 8-15 km above Earth, where temperature generally decreases with altitude, clouds form, precipitation occurs, and convection currents are active. See atmosphere.
Troposphere: The lowest region in the atmosphere. It is characterized by decreasing air temperature with increasing altitude and by the considerable amount of water vapor.
Troposphere- The lowest layer of Earth's atmosphere, where weather occurs.
Water vapor- Water in the form of a gas.
Weather- The condition of Earth's atmosphere at a particular time and place.
Troposphere: The portion of the earth's atmosphere from the surface to the tropopause; that is, the lowest 10-20 km of the atmosphere.
TROPOSPHERE - The lowermost layer of the atmosphere where most moisture, convection, and weather occurs. This region is anywhere from about 40,000 to 60,000 feet thick, and is characteristic of decreasing temperature lapse rates with height.
It occurs in the troposphere, the layer of air about 10 - 15 km thick, above the surface of the earth.
What causes weather?
The wave may reach maximum amplitude in the lower middle troposphere or may be the reflection of an upper tropospheric cold low or an equatorward extension of a mid-latitude trough.
For example, midlatitide troughs tend to display a westward tilt with altitude through the troposphere.
Upper LevelIn weather observing, the term applies to the portion of the atmosphere that is above the lower troposphere, generally 850 hPa and above.
temperature inversionAn extremely stable air layer in which temperature increases with altitude, the inverse of the usual temperature profile in the troposphere.
Lifted Indices are typically -6 or lower and the advection of dry air in the mid-troposphere (3-7 km above ground) by relatively strong winds leads to high convective instability and increased downdraft potential.
Troposphere: The lowest portion of the atmosphere up to the tropopause. Varies in height from 60,000 feet at the equator to 40,000 feet over the poles.
Troposphere: The lowest portion of the atmosphere in which most weather occurs.
tropopause The boundary between the troposphere and the stratosphere (about 8 km in polar regions and about 15 km in tropical regions), usually characterized by an abrupt change of lapse rate.
Temperature inversions trap atmospheric pollutants in the lower troposphere, resulting in higher concentrations of pollutants at ground levels than would usually be experienced.
A powerful oxidizing agent that is considered a pollutant in the lower troposphere but an essential chemical in the stratosphere where it protects the earth from high-energy ultraviolet radiation from the sun.
Strong jet streams form in the troposphere at boundaries where there are large temperature differences from north to south.
Equilibrium Level (EL) It is the height in the upper troposphere where a parcel of saturated air, rising because of its positive buoyancy, becomes equal in temperature to the surrounding environment.
Cold Low Type - This type has a circulation extending from the surface to the upper troposphere, with the maximum sustained low-level winds typically extending to a radius of 100 miles or more from the center.
Updraft rotation occurs when winds through the troposphere are moderate to strong, and low-level turning is significant.
CONVECTIVE INSTABILITY- Instability caused by very dry air advecting in the mid-levels of the troposphere over a warm and moist lower troposphere.
JET STREAM An area of strong winds that are concentrated in a relatively narrow band in the upper troposphere of the middle latitudes and subtropical regions of the Northern and Southern Hemispheres.
A narrow band of winds blowing high in the troposphere at speeds in excess of 60 miles per hour but can reach speeds in excess of 300 miles per hour. Typically thousands of kilometres long, hundreds of kilometres wide and a few kilometres deep.
The MJO affects the entire tropical troposphere, but is most evident in the Indian and western Pacific Oceans. The MJO involves variations in wind, sea surface temperature (SST), cloudiness, and rainfall.
lower atmosphere - Generally and quite loosely, that part of the atmosphere in which most weather phenomena occur (i.e., the troposphere and lower stratosphere); hence used in contrast to the common meaning for the upper atmosphere.
Jet Stream- A narrow band of winds blowing high in the troposphere at speeds in excess of 57 miles per hour or greater.
Kelvin Temperature Scale- A temperature scale in which 0 degrees is the point at which all molecular motion ceases (absolute zero).
jet stream- fast-moving currents of air reaching 180 mph (290 kmph ) in the troposphere - 30,000 to 35,000 feet up (9,144 to 10,668 meters) - that can strengthen and shift low-pressure systems.
Atmospheric Layers
Troposphere - the bottom few miles of the air's depth. Temperature decrease with height at an average rate of almost 6C per km.
Atmospheric Infrared Sounder: advanced sounding instrument designed to retrieve vertical temperature and moisture profiles in the troposphere and stratosphere achieving a temperature retrieval accuracy of 1 degree C with a 1 km vertical ...
Low Level Jet: A relatively narrow band of high-speed winds found in the lower troposphere, well below the upper troposphere where the jet stream is found.
M ...
Weather maps that are produced for the portion of the atmosphere above the lower troposphere, generally at and above 850 mb. Isolines on these maps usually represent the heights of a constant pressure surface, such as the 500 mb surface.
UPR ...
Atmospheric Window - Refers to the fact that the troposphere is transparent (i.e. does not absorb) to terrestrial radiation between 8 and 12 micrometers in length.
Strong winds concentrated within a narrow zone in the atmosphere in the upper troposphere, about 30,000 feet aloft that generally move in an easterly direction that drive weather systems around the globe.
Stratosphere - The layer of atmosphere above the troposphere and below the mesosphere (between 10 km and 50 km) generally characterized by an increase in temperature with height.
In synoptic meteorology and in weather observing, that portion of the atmosphere that is above the lower troposphere. No distinct lower limit is set but the term can be generally applied to the levels above 850 mb.
Vertical Wind Speed ...
Omega High: A blocking ridge of high pressure that forms in the middle or upper troposphere. It looks like the Greek letter omega.
Ozone - A form of oxygen that has a weak chlorine odor. Ozone heats the upper atmosphere by absorbing ultraviolet from sunlight. In the troposphere, ozone is a pollutant, but in the stratosphere it filters out harmful ultraviolet radiation.
Upper Air
(Aloft) Term used to signify the region from the base of a free atmosphere to the upper limit of the troposphere.
Violent Storm
Wind with a speed between 56 and 63 knots.
Tropical Wave: A trough or cyclonic curvature maximum in the trade-wind easterlies. The wave may reach maximum amplitude in the lower middle troposphere.
In the case of the earth, it is held more or less near the surface by the earth's gravitational attraction. The divisions of the atmosphere include the troposphere, the stratosphere, the mesosphere, the ionosphere, and the exosphere.
A region where the two equatorial Hadley cells border each other. Air converges near the equator associated with upward motion and divergence aloft. Heat is transported away from the equator in the upper troposphere.
above the surface, the layer is called an elevated temperature inversion.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Collection Efficiency, FROSFC, Isoheight, Mesoclimate, SFC, thermocline, Troposphere ...
Upper air That portion of the atmosphere which is above the lower troposphere. Generally applied to levels above 850 mb.
 See also: Air, Atmosphere, Surface, Temperature, Weather
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