The Euler equations are solved for non-hydrostatic atmospheric flow
problems in two dimensions using a high-resolution Godunov-type scheme.
The Riemann problem is solved using a flux-based wave decomposition
suggested by LeVeque. The design and implementation of the Riemann
solver used for computing the Godunov fluxes is discussed in detail.
The methodology is then validated against benchmark cases for
nonhydrostatic atmospheric flows. Comparisons are made with solutions
obtained from the National Center for Atmospheric Research's
state-of-the-art numerical model (ARW-WRF). The method shows promise in
simulating non-hydrostatic flows on the meso-, micro-, and
urban-scales, which are characterized by steep gradients.