Vorticity Advection leads to rising/falling pressures at the surface ...
vorticity - A vector measure of local rotation in a fluid flow, defined mathematically as the curl of the velocity vector, z[&zgr;] = ´[×] u, where z[&zgr;] is the vorticity, u the velocity, and the del operator.
VORTICITY The measurement of the rotation of a small air parcel. It has vorticity when the parcel spins as it moves along its path.
Vorticity
Measure of the amount of local rotation or spin in the atmosphere at a specified level. In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e. rotation about a vertical axis).
Vortex ...
Vorticity - A measure of the local rotation in a fluid flow. In weather analysis and forecasting, ...
Vorticity
A measure of the rotation of air in a horizontal plane. Positive (counter-clockwise or cyclonic) vorticity can be correlated with surface low development and upward vertical motion (in areas of positive vorticity advection).
VOT ...
Vorticity - Spin of the air indicating rotation. Positive vorticity is cyclonic flow, while negative vorticity is anticyclonic.
VORTICITY: A measure of the amount of "spin" (or rotation) in the atmosphere.
WAA: Warm Air Advection
WARM FRONT: A boundary between a warm airmass that is replacing a cooler airmass.
Vorticity- the tendency of a moving gas or liquid to rotate around an axis, forming a vortex.
- W -
Warning- is used when severe weather conditions are occurring, imminent or are expected within the following twelve to twenty-four hours.
VORTICITY- Any rotation within a horizontal or vertical windflow.
VORT MAX, VORT LOBE- Highest value of vorticity. A region of maximum vorticity. A wind flow through a vort max will produce divergence downwind from the vort max.
VORTICITY- A measure of the amount of "spin" (rotation) and "shear" in the atmosphere.
W
WAA - Warm Air Advection ...
vorticity—Turning of the atmosphere. Vorticity may be imbedded in the total flow and not readily identified by a flow pattern.
Vorticity This is a term used by meteorologists to describe the rotation of a fluid. An example is the rotation of the atmosphere (a gaseous fluid) around relatively large scale low and high pressure cells.
Vorticity maximum
A center, or maximum, in the vorticity field of a fluid; sometimes shortened to vort max.
Weather Glossary Search Page ...
VORTICITY - Ability of a fluid to rotate about a directional axis. In meteorology, the axis is usually vertical unless otherwise specified.
Positive Vorticity Advection. Advection of higher values of vorticity into an area, which often is associated with upward motion (lifting) of the air (Northern Hemisphere).
Negative Vorticity Advection - the advection of lower values of vorticity into an area.
NW
Northwest ...
RELATIVE VORTICITY The sum of the rotation of an air parcel about the axis of the pressure system and the rotation of the parcel about its own axis. Related term: vorticity ...
Negative Vorticity Advection (NVA) A region of negative vorticity usually several hundred of kilometers wide on a upper level chart that moves with the general wind flow. It aids in weather prediction by showing where regions of sinking air.
Vorticity equation
[edit] References
^ Wheeling Jesuit University. Exploring the Environment: UV Menace. Retrieved on 2007-06-01.
^ NASA. Flashes in the Sky: Earth's Gamma-Ray Bursts Triggered by Lightning. Retrieved on 2007-06-01.
POSITIVE VORTICITY ADVECTION The rotation of the atmosphere advects higher values of vorticity into an area. This is created by cyclonic turning and is often associated with upward motion of air.
vorticity). Atmospheric helicity is computed from the vertical wind profile in the lower part of the atmosphere (usually from the surface up to 3 km), and is measured relative to storm motion.
Vort MaxCommon slang reference to Vorticity Maximum; a center, or maximum, in the vorticity field of a fluid.VortexA whirling mass of air in the form of a column or spiral.
Weak development can occur due to a redistribution of uniform vorticity as large-scale flow passes over a mountain barrier (see lee trough). Stronger cases of lee cyclogenesis occur when the mountain range interacts with a developing baroclinic wave.
The "omega equation" used in numerical weather models is composed of two terms, the "differential vorticity advection" term and the "thickness advection" term.
Equivalent Potential Vorticity
Equi-Potential Line
In hydrologic terms, a line, in a field of flow, such that the total head is the same for all points on the line, and therefore the direction of flow is perpendicular to the line at all points.
Advection of higher values of vorticity into an area, which often is associated with upward motion (lifting) of the air.
Center
The vertical axis or core of a tropical cyclone. It is usually determined by cloud vorticity patterns, wind, and/or pressure distributions.
Vortex - An atmospheric feature that tends to rotate. It has vorticity and usually has closed streamlines.
Note that since tornadoes are governed by cyclostrophic forces, they can rotate in either direction around a low pressure core, with the direction usually established by any prevailing vorticity.
and a height, [ h ] and is calculated as an integral between those limits thus: (Vh - C) x Wh x dh [units=m**2/s**2 ] Where [ Vh ] is the environmental horizontal wind velocity , [ C ] is the storm velocity and [ Wh ] is the local relative vorticity.
34 inches and the winds veer with height, but they are relatively light. The heavy rain often occurs north and east of the vorticity maximum across the lower portion of the comma head about 2 to 3 degrees north or northeast of the 850 mb low.
Vorticity... Vapor/Saturation Pressure... Warm Fronts... Water vapor... Wavelength... Weather Observations/Surface & Upper Air... Weather Instruments... Weather Maps... Weather Symbols... Weighing Bucket Raingauge... Wind Chill... & Much Much More...
Vortex thermometer A thermometer used in aircraft which automatically corrects for adiabatic and frictional temperature rises by imparting a rotary motion to the air passing the thermal sensing element. Vorticity A vector measure of local ...
The heavy rain often occurs north and east of the vorticity maximum across the lower portion of the comma head about 2 to 3 degrees north or northeast of the 850 mb low.
 See also: Surface, Pressure, Air, Temperature, Weather
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