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 positi [..]

A measure of the spin of a fluid, usually small air parcels. Absolute vorticity is the combined vorticity due to the earth's rotation and the vorticity due to the air's circulation relative to the earth. Relative vorticity is due to the curving of the air flow and wind shear.

A vector measure of local rotation in a fluid flow, defined mathematically as the curl of the velocity vector, where ζ is the vorticity, u the velocity, and ∇ the del operator. The vorticity component [..]

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 abou [..]

A measure of the local rotation in a fluid flow. In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e., rotation about a vertical axis) and is used most of [..]

is a measure of spin for a fluid. The relative vorticity is a vector quantity equalling the the curl of the velocity field. The value of the vorticity depends on the spatial gradients of the velocity field. It is important for analyzing rotational dynamics of fluid motion.

The measurement of the rotation of a small air parcel. It has vorticity when the parcel spins as it moves along its path. Although the axis of the rotation can extend in any direction, meteorologists [..]

A vector measure of the local rotation in a fluid flow. In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e., rotation about a vertical axis) and is used most often in reference to synoptic scale or mesoscale weather systems. By convention, positive values indicate cyclonic rotation.

A measure of the local rotation in a fluid flow. In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e., rotation about a vertical axis) and is used most often in reference to synoptic scale or mesoscale weather systems. By convention, positive values indicate cyclonic rotation.

Turning of the atmosphere. Vorticity may be imbedded in the total flow and not readily identified by a flow pattern.

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).

The vorticity is 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). Convective Condensation Level (CCL)

A measure of the local rotation in a fluid flow. In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e. rotation about a vertical axis) and is used most often in reference to synoptic scale or mesoscale weather systems. By convention in the Southern Hemisphere, negative values indicate cyclonic (clockwise [..]

The measurement of the rotation of a small air parcel. It has vorticity when the parcel spins as it moves along its path. Although the axis of the rotation can extend in any direction, meteorologists [..]

A measure of the amount of "spin" (or rotation) in the atmosphere. Positive vorticity causes air to rise, which can result in clouds and precipitation, given sufficient moisture.

This is basically a measure of how much a column of air is spinning.  Depending on direction of spin and speed of spin, a variety of surface conditions can be surmised, such as the development of low [..]

A measure of the local rotation in a fluid flow. In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e., rotation about a vertical axis) and is used most of [..]

The measurement of the rotation of a small air parcel. It has vorticity when the parcel spins as it moves along its path. Although the axis of the rotation can extend in any direction, meteorologists are primarily concerned with the rotational motion about an axis that is perpendicular to the earth's surface. If it does not spin, it is said to [..]

A measure of the amount of "spin" (rotation) and "shear" in the atmosphere.

A measure of the local rotation in a fluid flow. In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e., rotation about a vertical axis) and is used most of [..]

Energy at the 500mb level.  See 500mb for more details.

The measurement of the rotation of a small air parcel. It has vorticity when the parcel spins as it moves along its path. Although the axis of the rotation can extend in any direction, meteorologists [..]

The measurement of the rotation

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 positi [..]

The measurement of the rotation of a small air parcel. It has vorticity when the parcel spins as it moves along its path. Although the axis of the rotation can extend in any direction, meteorologists are primarily concerned with the rotational motion about an axis that is perpendicular to the earth’s surface. If it does not spin, it is said to have [..]

(mathematics,fluid dynamics) A property of a fluid flow related to local angular rotation; defined as the curl of the flow's velocity field. * date=February 20, 2009|author=William M. Durham et al. [..]