Waves are ubiquitous in natural fluid systems like the Earth's ocean, planetary atmosphere, and the interior of stars and planets. Stratification (owing to spatial variations of temperature, salinity, gravity or magnetic field) and/or Coriolis effects (owing to the rotation of planets & stars) represent key physical ingredients of wave generation, propagation and dissipation in many of these large-scale systems. Together with the significant amounts of energy input into them, the ability of waves to transport energy and momentum (and maybe mass too) through large spatial extents has significant implications for (i) global flow features like oceanic or atmospheric circulation, mean temperature distribution in planets/stars etc., (ii) the overall energy budget, and (iii) biological activity in the ocean. Furthermore, it is now widely recognized that wave dissipation mechanisms (and the resulting generation of heat and mixing) have to be accurately parameterized in global scale numerical ...
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