baroclinic model A model of atmospheric circulation that, in contrast with barotropic models, does not constrain constant-pressure surfaces to coincide with constant-density surfaces.
Zone - A region in which a temperature gradient exists on a constant pressure surface.
Baroclinic - A state of the atmosphere in which isotherms intersect isobars. The geostrophic wind results in temperature advection, and hence disturbances modify with time. Short waves are baroclinic and therefore modify.
ITY- A cold air advection/warm air advection couplet that increases atmospheric instability. On analysis and forecast charts it is the isotherms crossing the height contours. ...
Has vertical structure, in the form of variable density, temperature and winds.
ZONE - A region where there is a large horizontal change in temperature, humidity, and or pressure, such as across a frontal zone.
Fronts - baroclinic divisions in the atmosphere. Zones between air masses where temperature changes quite rapidly with horizontal distance.
Cold Front - a front where the colder air is advancing and the warm air is retreating ...
leaf shieldA cloud pattern on satellite images - frequently noted in advance of formation of a low pressure center. ZoneA region in which a temperature gradient exists on a constant pressure surface.
The structure typically is most pronounced on the leading edge of the updraft, while drier air from the rear flank downdraft often erodes the clouds on the trailing side of the updraft.
Baroclinic Zone- A region in which a temperature gradient ...
An example is a pattern. BAROGRAPH An instrument that continuously records a barometer's reading of atmospheric pressure. For an example, see aneroid barometer. BAROMETER An instrument used to measure atmospheric pressure.
(See Helmholtz instability, inertial instability, shearing instability, baroclinic instability, barotropic instability, rotational instability.) The space scale of unstable waves is important in meteorology: Thus Helmholtz, baroclinic, ...
Although it is regarded as a 'single' ribbon of strength encircling the hemispheres, in reality the jet is broken and in developmental situations, can become very distorted with new jets re-forming at different levels from the 'main' jet.
The deepening extratropical low accelerated as it moved southeastward along the northern side of the strengthening baroclinic zone and by 0000 UTC 20 May was located near 19.0°S, 101.2°E approximately 1500 km northwest of Shark Bay.
On March 12, 1993, a newly formed cyclone moved into a low level zone already in place over the Gulf of Mexico and began to rapidly intensify.
The term implies both poleward displacement of the cyclone and the conversion of the cyclone's primary energy source from the release of latent heat of condensation to baroclinic (the temperature contrast between warm and cold air masses) processes.
An extratropical storm is a cyclone that no longer derives its energy source from the processes involved in sustaining a tropical cyclone, but thrives on processes; i.e., the temperature contrast between warm and cold air masses.
baroclinicity. In a barotropic atmosphere the geostrophic wind is independent of height.
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Browse Related Terms: leaf shield, Collar Cloud, Eye Wall, Rain-free Base, Rope Cloud
Warm Advection - permalink - collapse
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Thickness charts in general and the 1000-500 hPa thinkness charts in particular are also very useful for determining baroclinic zones and development. Thickness lines can also indicate the steering direction of surface highs and lows.
from the ocean at high temperatures and heat export at the low temperatures of the upper troposphere. In this they differ from extratropical cyclones, which derive their energy from horizontal temperature contrasts in the atmosphere ( ...
are frequently present to support the formation and maintenance of thunderstorm cells. There is growing evidence supporting the role CSI plays in the development of some types of thunderstorms, particularly those occurring within strongly baroclinic ...
See also: Pressure, Wind, Air, Cyclone, High