A key boundary condition in global climate models (GCMs) is surface height. Typically, a high-resolution observed topographic dataset is placed on a GCM grid by averaging the observed topography over each model grid cell. This process has the unfortunate effect of smoothing out mountain peaks, such that the model wind is steered less by topography than in reality. Prior work has highlighted...
A new generation of global cloud-resolving modeling system is being developed, based on the concept of “Super Dynamics on the Cube” (SD3). SD3 represents a dramatic departure in the model design, by merging the traditional “dynamical core” with “sub-grid physical parameterizations”. The sub-grid physics includes all the moist processes (cloud microphysics and 3D gray-zone convective...
Precipitation is an important climate quantity that is critically relevant to society. In spite of intense efforts, significant precipitation biases remain in most climate models. Using the DOE-E3SM model version 1, the inclusion of a missing process, convective gustiness, is shown to reduce a pervasive and persistent bias found in many general circulation models that occurs in the Tropical...
