Sentences with phrase «in hydrostatic balance»

That one solution is maximum entropy, in hydrostatic balance, and in thermal equilibrium.

Kinetic energy at the surface acting via conduction and convection supplies the upward pressure gradient force which offsets the downward force of gravity in order to constantly hold the mass of an atmosphere off the surface in hydrostatic balance.

As a further exercise, you can ask whether the virial theorem, correctly applied, gives you any further information about an atmosphere in hydrostatic balance.

Not exact matches

Furthermore, the key global energy balance consideration for the terrestrial greenhouse that is in hydrostatic and thermal equilibrium, is that the solar energy that is absorbed by the ground surface and atmosphere must be balanced by the outgoing LW emission to space.

So, we are now ready to pull all that together in order to show how a planetary atmosphere uses convective overturning to neutralise the effect of radiatively active materials of any type so that hydrostatic balance can be maintained whatever fate throws at it.

In order to maintain hydrostatic balance the necessary kinetic energy can not be radiated away to space hence that «additional» energy must be held at the surface over and above that which is required (by the surface and atmosphere combined) solely to radiate enough energy to space to match energy being received from space.

The hydrostatic equation is the vertical component of the momentum equation (Newton's equation of motion) for the fluid parcel when the forces are in perfect balance and the net acceleration = 0.»

Suppose you prepare the gas in hydrostatic equilibrium (so it is in perfect force balance) but with a thermal lapse.

Hydrostatic equilibrium: «In fact, the gravitational force is almost exactly balanced by the pressure gradient force, a condition known as hydrostatic eHydrostatic equilibrium: «In fact, the gravitational force is almost exactly balanced by the pressure gradient force, a condition known as hydrostatic ehydrostatic equilibrium.

In fact, a gas with a DALR is a fairly special case of the many «equilibria» one can reach in the specific limit of hydrodynamic relaxation (only) to a state of hydrostatic balance neglecting the much slower thermal relaxation that eventually makes the gas isothermaIn fact, a gas with a DALR is a fairly special case of the many «equilibria» one can reach in the specific limit of hydrodynamic relaxation (only) to a state of hydrostatic balance neglecting the much slower thermal relaxation that eventually makes the gas isothermain the specific limit of hydrodynamic relaxation (only) to a state of hydrostatic balance neglecting the much slower thermal relaxation that eventually makes the gas isothermal.

** http://www.metoffice.gov.uk/learning/science/first-steps/atmosphere/wind Hydrostatic equilibrium: «In fact, the gravitational force is almost exactly balanced by the pressure gradient force, a condition known as hydrostatic eHydrostatic equilibrium: «In fact, the gravitational force is almost exactly balanced by the pressure gradient force, a condition known as hydrostatic ehydrostatic equilibrium.

You're still not getting hydrostatic balance, it doesn't mean nothing is happening and you have to bring in another idea into the system to work out what will happen..., the adiabatic lapse rate will happen, because gases will become more dense and sink when cold and so will find themselves under great pressure at the surface where they will get compressed and heat up, and heated up they will become less dense and rise and in rising they will cool and in cooling they will become more dense and sink and so on.

In a neutral, unheated atmosphere, once one waits a very long time, there is no more movement of air; it achieves hydrostatic equilibrium, force balance.

All of them are hydrostatic — in perfect force balance — by construction, they satisfy the differential equation above for the balance of buoyant forces in a fluid.

The second one is that in hydrostatic equilibrium, where the vertical gradient of total air is balanced by gravity, the dynamic power is only produced by horizontal pressure gradients (i.e. q = — u. ∇ p).

William Gray also raised the point about how the models achieve hydrostatic balance in his presentation that was so roundly dissed by Judith Curry, among others.

As soon as a global climate model readjusts a vertical column to unphysically alter the large scale solution in order to maintain hydrostatic balance (overturning due to unrealistic heating parameterizations necessitate this adjustment), there is no mathematical theory that can justify the nature of the ensuing numerical solution.

Regarding the origin, EU is more closely related to the total internal kinetic energy of the atmosphere, which — according to the virial theorem — in hydrostatic equilibrium balances the total gravitational potential energy.

People who know about this scratch their heads here, because it is a principle which can be important in stars, but applied to Earth just describes the hydrostatic balance of the atmosphere.