Static Stability
نویسنده
چکیده
Static stabilitymeasures the gravitational resistance of an atmosphere to vertical displacements. It results from fundamental buoyant adjustments, and so it is determined by the vertical stratification of density or potential temperature. It influences the dynamics of many kinds of atmospheric motions, which in turn are responsible for determining its variations. Static stability is represented commonly by the square of the buoyancy frequency N, which plays a role in theories for flow instabilities, wave propagation, and forced motions. As summarized below, these theories apply to a wide range of spatial scales, from small-scale turbulence to convection, mesoscale motions, and large-scale circulations for which the ratio ofN to the Coriolis frequency f is paramount.
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