### Rossby Number

**(Ro, Kibel Number)**
(ratio of inertial to Coriolis force)

The **Rossby Number** (**Ro**) is a dimensionless number consisting of
the ratio of internal to Coriolis Force.
It is used in modeling Atmosphere and ocean dynamics.
It is defined as:

Ro = U / Lf

- U - characteristic velocity scale
- L - characteristic length scale
- f = 2 Ω sin φ - the Coriolis Frequency where Ω is the angular frequency of rotation and φ is the latitude.

The **Convective Rossby Number**, of interest in the study
of convection in stars and planets and the resulting Dynamos,
is the ratio of a buoyancy force to the Coriolis force.

(*fluid dynamics,measure,atmosphere*)
http://en.wikipedia.org/wiki/Rossby_number

**Referenced by:**

Rossby Radius of Deformation

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