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Momentum

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Momentum: The product of mass and velocity.
Newton, Sir Isaac: Famous English physicist and mathematician. (1642-1727)
Newton's Law of Gravity: The gravitational force between a pair of objects.

 


linear momentum"Same as momentum; see also angular momentum.
linear operator"1.

Angular Momentum- the energy of motion of a spinning body or mass of air or water.
Angular Velocity- the rate at which a spinning body rotates.

Conservation of Momentum - a law of physics that states that an object in motion will stay in motion until acted upon by an outside force; an object at rest will remain at rest until acted upon by an outside force ...

1820 - John Herapath develops some ideas in the kinetic theory of gases but mistakenly associates temperature with molecular momentum rather than kinetic energy; his work receives little attention other than from Joule.

It carries momentum, sensible heat, and potential heat from the tropics to the mid-latitudes (30 degrees). The poleward transport aloft is complemented by subsidence in the subtropical high pressure ridge and a surface return flow.

Thus, the moment of the momentum of a fluid parcel per unit volume about an axis is r ´[×] r[&rgr;]u, where r is the vector from axis to the parcel, r[&rgr;] the density, and u the velocity vector of the parcel; ...

The velocity profile near the surface is determined mostly by turbulence, which is very effective in transporting momentum. For a discussion of turbulence, see Atmospheric Turbulence. We'll just use the results here.

As updrafts carry precipitation enriched air to the cloud top, upward momentum is lost and the air begins to spread out horizontally, becoming a part of the anvil cloud.

DIVERGENCE- A 1-D process in which higher momentum air moves away from lower momentum air.
DIVQ- Diverging Q vectors. Indicates air will sink due to low level cold air advection and/or upper level convergence
DLAD- Delayed ...

Newton's Laws of Motion Newton's three laws of motion are: 1) Every body continues in a state of uniform motion in a straight line unless acted upon by some external force. 2) The time rate of change of momentum (mass x velocity) is proportional ...

Law of Conservation of Angular Momentum - The product of the velocity of an object around a center of rotation (axis) and the distance of the object from the axis is constant.

*Reanalysis uses available observations and the equations for conservation of energy and momentum that govern the atmosphere to interpolate in time and space meteorological conditions for areas where no observations exist.

FLUID HAMMER - A physics term for aerodynamic / hydrodynamic theory when a moving flow of fluid produces a spike of greater force when set in motion (or stopped) due to the inertia / momentum of that fluid.

General circulation model (GCM) Numerical representation of the atmosphere and its phenomena over the entire Earth, using the equations of motion and including radiation, photochemistry, and the transfer of heat, water vapor, and momentum.

The fact that, for example, a strong warm-ENSO event can significantly decrease Atlantic hurricane activity, and thus reduce the chance of extra-tropical elements (humidity - heat - momentum) being swept up in the mid-latitude flow, ...

buoyant air parcels to the point where they will rise freely. Since CIN is proportional to the amount of kinetic energy that a parcel loses to buoyancy while it is colder than the surrounding environment, it contributes to the downward momentum.

In physics, this is called "the conservation of angular momentum". The rotation gets faster and faster as the size of the rotating column grows more narrow.

Since CIN is proportional to the amount of kinetic energy that a parcel loses to buoyancy while it is colder than the surrounding environment, it contributes to the downward momentum.

Antitriptic wind In Jeffreys' classification, a wind for which the pressure force exactly balances the viscous force, in which the vertical transfers of momentum predominate. Apparent freezing point Same as freezing point.

atmospheric turbulenceHigh frequency velocity fluctuations that lead to turbulent transport of momentum, heat, mositure, and passive scalars, and often expressed in terms of variances and covariances.

See also: Air, Water, Surface, Horizon, Wind