On line 503, 'compact' rather than 'concise'.

On line 480 I would say 'compares' rather than 'intercompares'.The relevance of the paragraph is not clear. However it is not clear at this stage that this is what you are going to do. On lines 399-403 you talk about comparing area averages of precipitation.I would imagine that, if you did need to get rid of initial condition shocks then you would need to apply a projection to get discretely divergence free initial conditions. In 2.3 you describe the method of initialising w for non-hydrostatic models which, you say, doesn't have much impact.I have some comments which the authors can consider. I haven't checked all of the equations and I haven't tried to run the test case myself so I cannot be sure that it is fully described.

The test case is discussed relative to meteorological phenomena and relative to numerical methods and artefacts, bringing in a wealth of insight. This is the first time that I have not requested any corrections.This is a terrific paper that clearly describes a new, challenging test case for dynamical cores with simple microphysics. The examples highlight the broad palette of use cases for the test case and also reveal physics-dynamics coupling issues. The overall flow patterns agree well in the four dynamical cores, but the details can vary greatly. In addition, the Model for Prediction Across Scales (MPAS) is tested. These are the Spectral Element, Finite Volume, and Cubed-Sphere Finite Volume dynamical cores which are part of NCAR's Community Earth System Model (CESM) version 2.2. Selected simulations examples from four dynamical cores are shown. The test case enhances the complexity of the existing test suite hierarchy and focuses on the impacts of two midlatitudinal mountain ridges on the circulation. The latter utilizes the Kessler warm-rain precipitation scheme. Both dry and idealized moist configurations are suggested. The topography is analytically prescribed and acts as a trigger of both baroclinic Rossby waves and inertia-gravity waves on a rotating, regular-size planet. A new test case is introduced which is built upon a baroclinically-unstable base state with an added orographic barrier. Idealized test cases for the dynamical cores of Atmospheric General Circulation Models are informative tools to assess the accuracy of the numerical designs and to investigate the general characteristics of atmospheric motions.

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