Dependence of Model Energy Spectra on Vertical Resolution

摘要

Many high-resolution atmospheric models can reproduce the qualitative shape of the atmospheric kinetic energy spectrum, which has a power-law slope of -3 at large horizontal scales that shallows to approximately -5/3 in the mesoscale. This paper investigates the possible dependence of model energy spectra on the vertical grid resolution. Idealized simulations forced by relaxation to a baroclinically unstable jet are performed for a wide range of vertical grid spacings Delta z. Energy spectra are converged for Delta z