期刊名称：Journal of Advances in Modeling Earth Systems
电子版ISSN：1942-2466
出版年度：2017
卷号：9
期号：6
页码：2304-2316
DOI：10.1002/2017MS001059
出版社：John Wiley & Sons, Ltd.
摘要：We describe how convective vertical velocities vary in the “gray zone” of horizontal resolution, using both hydrostatic and nonhydrostatic versions of GFDL's FV 3 dynamical core, as well as analytical solutions to the equations of motion. We derive a simple criterion (based on parcel geometries) for a model to resolve convection, and find that resolution can be required for convergence of . We also find, both numerically and analytically, that hydrostatic systems overestimate , by a factor of 2–3 in the convection‐resolving regime. This overestimation is simply understood in terms of the “effective buoyancy pressure” of Jeevanjee and Romps (2015, 2016).
