Relevant Research:
(2017) Stability of three-dimensional Gaussian vortices in an unbounded, rotating, vertically stratified, Boussinesq flow: Linear analysis, Journal of Fluid Mechanics 824, p. 97-134, pdf, doi:10.1017/jfm.2017.303
(2006) A 3D spectral anelastic hydrodynamic code for shearing, stratified flows, Journal of Computational Physics 219(1), p. 21-46, pdf, doi:10.1016/j.jcp.2006.03.015