* Stable Air (Meteorology) - Definition - Lexicon & Encyclopedia

stable air mass having static in its lower ; it is free from , has a of and may have or , or no .Topic: ... [ ]

stable air mass - Air mass having a stable stratification in its lower , and consequently free from convection, having a low degree of turbulence, and containing either stratiform clouds, fog, or no clouds at all. [ ]

Stable Air - that is colder than its surroundings and as such is resistant to upward movement. - An elongated axis of .Unstable Air - Air that is warmer than its surroundings and as such tends to rise, leading to the formation of clouds and possibly . [ ]

s aloft represent regions of relatively low stability, while -based cold pools are regions of relatively . - Frequently used as a synonym for , although it actually is a generally circular ring of surrounding the upper portion of a wall cloud. [ ]

Un - generally, air which will continue to rise and accelerate when briefly d upward - a relatively small- of air with marked upward motion - air that flows toward higher terrain and, hence, is forced to rise ... [ ]

: Air that is colder than its surroundings and as such is resistant to upward movement.: a of the marked by and usually by , , , or and .: Sinking (downward) motion in the atmosphere, usually over a broad area. [ ]

ABNDTAbundantAbsolutely An atmospheric that exists when the is less than the . ly UnAn atmospheric condition that exists when the environmental lapse rate is greater than the . [ ]

a that forms from localized convection within an un mass (e.g., not along a al boundary); because all are associated with some type of forcing mechanism, -scale or otherwise, the term is somewhat controversial and be used with discretionAKAlaska ... [ ]

Often, a white wispy cloud forms above rapidly rising updraft - a cloud. It forms as moist, but above a rapidly rising updraft is pushed upward, causing the to condense. [ ]

Air in which and at us levels discourage the formation of convection currents. ... [ ]

- a layer of very . Temperature increases with .Subsidence inversion - sinking air compresses and becomes warmer than air below. - moves overtop of colder air. [ ]

When moist, flows over a larger , such as those caused by mountains, a series of s form on the of the mountain. If the temperature at the crest of the drops below the local , in the air may condense to form . [ ]

The eastern side of each is associated with subsiding stable air, which produces low relative humidities and skies, while the atmosphere at far western side of each subtropical high is less stable and can be associated with , humid . [ ]

masses generally imply the absence of 'free' vertical motion, and any ascent that does occur must be forced, i.e. frontal (dynamic) or (mechanical) ascent, and the cloud structure is essentially layered. [ ]

Sometimes, the is stable near the ground and must be forced to rise into un by a front or other mechanism.Terms for using data . CD-ROM available. Credits and Acknowledgments for WW2010.Department of (DAS) atthe University of Illinois at Urbana-Champaign. [ ]

- Air with little or no to rise, that is usually accompanied by dry weather. [ ]

Moisture-to form clouds and rain. Un-relatively warm air that can rise rapidly. -fronts, and mountains are capable of air to help form thunderstorms. [ ]

: The weight of the air above the ground, measured in (" HG), (mb), or (pa) Stability: A measure of the of air. Un will tend to rise and easily, while will generally remain stationary in terms of vertical movement. [ ]

See Absolutely . A hypothetical vertical distribution of atmospheric temperature, pressure, and in which the air is assumed to obey the gas law and the . The of temperature in the is taken as 6.5°C/1000 m or 3. [ ]

For very un, strong turbulence makes p = 0, so that the is independent of height, except for a transition layer that extends to a height z1. Over a y plain, ε is 1-2 cm and z1 is no more than 30 cm. These extreme cases are not usually encountered, but represent good limits. [ ]

- Air having a tendency to rise readily. , such as thunderstorms, need moist and un. The term DE-STABILIZE is used for air that has become unstable as a result of heating or a triggering mechanism such as a front or mountain. Commonly called . [ ]

Cold Pool - A region of relatively , represented on a analysis as a relative in temperature surrounded by closed s. Cold pools aloft represent regions of relatively low stability, while surface-based cold pools are regions of relatively stable air. [ ]

Like other , clouds are caused by un heated from below rising rapidly, causing water droplets to condense. [ ]

Upslope precipitation Precipitation thatforms due to moist, gradually rising along an elevated plain.Upslope precipitation is common over the western Great Plains, especiallyeast of the Rock Mountains. [ ]

conditionally un-Unsaturated air that will become unstable on the condition it becomes d. See instability.-The transfer of by molecular action through a substance or from one substance in contact with another; transfer is always from warmer to colder temperature. [ ]

Stable airAir is stable when an sinks or rises to its original position, when the force that initially moved it is no longer operating. Staccato ingA CG which appears as a single very bright, short- stroke, often with considerable branching. [ ]

Atmospheric Instability & Limitations on Lifting Unstable AirWhat is ? - Lesson for KidsSolar Radiation Transfer: , & ... [ ]

massAn airmass which is generally undergoing subsidence, and therefore has little of producing any significant . A at medium levels can be associated with this.Stagnant Pattern ... [ ]

EL - . The level where un becomes stable again. - The act of air being drawn into a cloud from the non-cloud environment. - The measure of the in a . Also, the amount of that is unavailable to do . [ ]

A type of fog composed of suspended of or 20 to 100 resulting from the of tiny droplets. occurs in clear, , when are °C. ... [ ]

Positive indicate more and negative values indicate instability , the more negative number, the more unstable the air is, and the stronger the are to be with any developing thunderstorms. [ ]

layer Air layer characterized by a vertical temperature profile such that return to their original s following any upward or downward displacement.Standard atmosphere s of temperature, pressure, and density within the atmosphere. [ ]

A thunderstorm that is produced by convection within an unstable air mass through an instability mechanism. Such thunderstorms ly occur within a tropical or warm, moist air mass during the afternoon as the result of afternoon heating and dissipate soon after . [ ]