ESS228
Prof. Jin-Yi Yu
Waves in the Atmosphere and Oceans
External gravity wave (Shallow-water gravity wave)
Internal gravity (buoyancy) wave
Inertial-gravity wave: Gravity waves that have a large enough wavelength to be affected by the earths rotation.
Rossby Wave: Wavy motions results from the conservation of
potential vorticity.
Kelvin wave: It is a wave in the ocean or atmosphere that balances
the Coriolis force against
a topographic boundary such as a coastline, or a waveguide such as the equator. Kelvin wave is
non-dispersive.
Restoring Force
qConservation of potential temperature in
the presence of positive static stability ่ internal gravity waves
qConservation of potential vorticity in the
presence of a mean gradient of potential vorticity ่ Rossby waves