What is Cyclostrophic force?
As the wind speed increases, a new force called “Centrifugal force” or “Cyclostrophic force” comes into being. This force acts radially outward from the centre of rotation (low pressure area). The greater the speed of the rotation, the greater the Cyclostrophic force.
What is Cyclostrophic flow?
Cyclostrophic flow describes a steady-state flow in a spatially varying pressure field when. the frictional and Coriolis actions are neglected; and: the centripetal acceleration is entirely sustained by the pressure gradient.
What is wind balance?
Geostrophic Wind: winds balanced by the Coriolis and Pressure Gradient forces. . Geostrophic Wind winds balanced by the Coriolis and Pressure Gradient forces. An air parcel initially at rest will move from high pressure to low pressure because of the pressure gradient force (PGF).
What is antitriptic wind?
[¦an·tē¦trip·tik ¦wind] (meteorology) A wind for which the pressure force exactly balances the viscous force, in which the vertical transfers of momentum predominate.
What is the significance of the hydrostatic balance?
A hydrostatic balance is a particular balance for weighing substances in water. Hydrostatic balance allows the discovery of their specific gravities. This equilibrium is strictly applicable when an ideal fluid is in steady horizontal laminar flow, and when any fluid is at rest or in vertical motion at constant speed.
Are hurricanes Cyclostrophic?
The cyclostrophic wind can be an approximation to the real wind in the atmosphere only near the equator, where the Coriolis acceleration is small; or in cases of very great wind speed and curvature of the path (such as a tornado or hurricane), so that the centripetal acceleration is the dominant one. …
What is gradient balance?
Gradient Balance. arises when air moves in circular orbits, indicated in gray, around an extreme value of pressure. The speed of motion (black arrow) is determined by the strength of the pressure gradient, radius, and the Coriolis parameter (twice the component of the Earth’s rotation vector about the local vertical).
What is Ageostrophic wind?
Ageostrophy or (ageostrophic flow) is the difference between the actual wind or current and the geostrophic wind or geostrophic current.
What is gradient wind balance?
The gradient wind is a balance of the Pressure Gradient Force, centrifugal and Coriolis. A geostrophic wind becomes a gradient wind when the wind begins flowing through curved height contours. The curving motion introduces a centrifugal (outward fleeing) force. Since the Coriolis decreases, the wind speed decreases.
What is inertial wind?
The inertial wind is derived from the balance of the following forces in the n equation of motion: The centrifugal force: The coriolis force: Inertial flows are also known as inertial oscillations, since air parcels under the influence of inertial balance follow circular paths in an anti-cyclonic manner.
What does the hydrostatic equation tell us?
By dividing both sides by the infinitesimally small height, we end up with an equation that’s the derivative of the pressure with respect to height, which is equal to minus the parcel’s density times gravity. This equation is the hydrostatic equation, which describes a change of atmospheric pressure with height.