disturbance"In general, any agitation or disruption of a steady state. In meteorology, this has several rather loose applications: 1) used for any low or cyclone, but usually one that is relatively small in size and effect; 2) applied to an area ...
DISTURBANCE This has several applications. It can apply to a low or cyclone that is small in size and influence. It can also apply to an area that is exhibiting signs of cyclonic development.
Disturbance- a disruption of the atmosphere that usually refers to a low pressure area, cool air and inclement weather.
Divergence- refers to the spreading out of winds.
Disturbance
This term has several applications. Normally describes a low or trough that is small in size and influence or is exhibiting signs of development.
Diurnal ...
disturbance—In meteorology, applied rather loosely: (1) any low pressure or cyclone, but usually one that is relatively small in size; (2) an area where weather, wind, pressure, etc.
Disturbances such as large thunderstorm complexes over North Africa periodically result in vast dust and sand storms, some of which extend as high as 20,000 feet. These can be driven out to sea within the SAL as far west as North America.
Disturbance: A small area of low pressure.
Diurnal:Daily.
Divergence:In the atmosphere when air diverges it sinks, moves clock wise and outward creating
"High Pressure" Centrifugal Force. Compressional Warming. Anti-Cyclonic conditions.
Disturbance- An area of low-pressure in which storm conditions occur.
Doppler Radar- Sophisticated radar that can measure the speed and direction of moving objects, such as wind.
Disturbance - A low pressure system, a tropical area of storminess, or any area in which the weather is in a state of cloudiness, precipitation or wind.
DISTURBANCE - Another name given to a region of weather in the atmosphere suggesting low pressure, such as a trough.
A disturbance of the atmosphere marked by wind and usually by rain, snow, hail, sleet, or thunder and lightning. In marine usage, winds 48 knots (55 mph) or greater.
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A disturbance in the upper atmospheric flow pattern which is usually associated with clouds and precipitation. This disturbance is characterized by distinct cyclonic flow, a pocket of cold air, and sometimes a jet streak.
A disturbance in the F region of the ionosphere, which occurs in connection with geomagnetic activity
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A small disturbance of wind in a large wind flow which can produce turbulence.
Ekman spiral ...
Tropical Disturbance: A discrete tropical weather system of apparently organized convection -- generally 100 to 300 nmi in diameter -- originating in the tropics or subtropics, having a nonfrontal migratory character, ...
TROPICAL DISTURBANCE: A discrete system of apparently organized convection originating in the tropics or subtropics, having a non-frontal migratory character and maintaining its identity for 24 hours or more.
Tropical disturbance: Often the earliest stages of a tropical cyclone. Normally an organized area of thunderstorms that forms in the tropics and persists for more than 24 hours.
tropical disturbance - A migratory, organized region of convective showers and thunderstorms in the Tropics that maintains its identity for at least 24 hours but has no closed wind circulation.
TROPICAL DISTURBANCE: An organized mass of tropical thunderstorms, with a slight cyclonic circulation, and winds less than 20 knots.
TROPICAL STORM: An organized cyclone in the tropics with wind speed between 35 and 64 knots.
Tropical disturbance A region of convective activity over tropical seas with a detectable center of low pressure; the initial stage in the development of a hurricane.
Tropical Disturbance- An organized mass of thunderstorms in the tropics than lasts for more than 24 hours, has a slight cyclonic circulation, and winds less than 23 mph.
Shortwave - a disturbance in the mid or upper part of the atmosphere which induces upward motion ahead of it. If other conditions are favorable, the upward motion can contribute to thunderstorm development ahead of a shortwave.
S/WV ...
Storm - a disturbance of the atmosphere marked by wind and usually by rain, snow, hail, sleet, or thunder and lightning ...
West African Disturbance Line
A line of convection about 300 miles long, similar to a squall line. It forms over west Africa north of the equator and south of 15 degrees North latitude. It moves faster than an Easterly Wave between 20 and 40 mph.
Storm- A violent disturbance in the atmosphere.
Thermometer- An instrument used to measure temperature, consisting of a thin, glass tube with a bulb on one end that contains a liquid (usually mercury or alcohol).
STORM An individual low pressure disturbance, complete with winds, clouds,and precipitation. Examples include thunderstorms, tornadoes, or even tropical cyclones. The name is associated with destructive or unpleasant weather.
Space Environment Center(SEC) - This center provides real-time monitoring and forecasting of solar and geophysical events, conducts research in solar-terrestrial physics, and develops techniques for forecasting solar and geophysical disturbances.
62 gauss at the north poleGeomagnetic StormIn solar-terrestraial terms, a worldwide disturbance of the earth's magnetic field, distinct from regular diurnal variations.
Microseism A feeble oscillatory disturbance of the earth's crust, detectable only by very sensitive seismographs. Certain types of microseisms seem to be closely correlated with pressure disturbances. See microbarm.
ImperviousIn hydrologic terms, the ability to repel water, or not let water infiltrateIMPLImpulse- Alternate term for Upper Level System and Shortwave; a general term for any large-scale or mesoscale disturbance capable of producing upward ...
occasions, particularly in mid-latitude/temperate zone regions, the flow is directed more or less directly from west to east, crossing few latitude zones within the same longitude range: this is a 'highly zonal' type - any short-wave disturbances ...
In meteorology, the term refers to a type of atmospheric disturbance centered on a low-pressure center that often results in stormy weather.
Heavy rain and Flooding a problem of any tropical disturbance
Apart from the storm surge, heavy rainfall causes both flash and long term flooding.
Steering flow A basic fluid flow which exerts a strong influence upon the direction of movement of disturbances embedded in it. This is usual concept of steering in meteorology.
Perturbation - A disturbance; often develops into a low-pressure system.
Potential temperature - A measure of heat. It is the temperature air would be if brought dry adiabatically to 1000 mb.
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Storm
(1) An atmospheric disturbance involving perturbations of the prevailing pressure and wind fields, on scales ranging from tornadoes (1km across) to extratropical cyclones (2000-3000km across). (2) Wind with a speed between 48 and 55 knots.
Gravity Wave A wave disturbance in which buoyancy acts as the restoring force on parcels displaced from hydrostatic equilibrium. Waves on the ocean are examples of gravity waves.
Easterly Wave - A large migratory wavelike disturbance in the trade winds that sometimes triggers the formation of a hur ricane.
Eccentricity - The variation of an elipse from a circle.
Electromagnetic Radiation - See Radiation.
A scale of distance used by meteorologists to describe large weather disturbances. Weather systems which span thousands to millions of square miles and which exist for several days are on the "synoptic scale".
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COLORADO LOW A low pressure disturbance that forms in the lee of the Rocky Mountains, usually in southeastern Colorado.
(Abbrev. PVA) - Advection of higher values of vorticity into an area, which often is associated with upward motion (lifting) of the air. PVA typically is found in advance of disturbances aloft (i.e., shortwaves), ...
East
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Azimuth, DMNT, ELY, Meridional Flow, Set, W/, West African Disturbance Line, Zonal Flow
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The far north and south of the country come under the influence of reasonably regular rain-bearing disturbances for at least part of the year, and the east coast is watered reasonably well by moisture from the Tasman and Coral Seas.
In electricity, a periodic variation of an electric current or voltage. 2. In physics, any of the series of advancing impulses set up by a vibration, pulsation, or disturbance in air or some other medium, as in the transmission of heat, light, sound, ...
to the dilution of the 14C/C ratio in atmospheric CO2 by the admixture of fossil-fuel produced CO2, but the definition has been extended to both the 14C and 13C ratios in any pool or reservoir of the carbon cycle resulting from human disturbances.
 See also: Weather, Atmosphere, Storm, Air, High
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