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RISArbitrary-Order Conservative and Consistent Remapping and a Theory of Linear Maps: Part I
Publisher: American Meteorological Society
Abstract: he design of accurate, conservative, consistent, and monotone operators for remapping scalar fields between computational grids on the sphere has been a persistent issue for global modeling groups. This problem is especially ...
The Spectral Element Atmosphere Model (SEAM): High-Resolution Parallel Computation and Localized Resolution of Regional Dynamics
Publisher: American Meteorological Society
Abstract: Fast, accurate computation of geophysical fluid dynamics is often very challenging. This is due to the complexity of the PDEs themselves and their initial and boundary conditions. There are several practical advantages to ...
Using Variable-Resolution Meshes to Model Tropical Cyclones in the Community Atmosphere Model
Publisher: American Meteorological Society
Abstract: statically nested, variable-mesh option has recently been introduced into the Community Atmosphere Model?s (CAM's) Spectral Element (SE) dynamical core that has become the default in CAM version 5.3. This paper presents a ...
Accuracy Analysis of a Spectral Element Atmospheric Model Using a Fully Implicit Solution Framework
Publisher: American Meteorological Society
Abstract: A fully implicit (FI) time integration method has been implemented into a spectral finite-element shallow-water equation model on a sphere, and it is compared to existing fully explicit leapfrog and semi-implicit methods ...
A Spectral Element Version of CAM2
Publisher: American Meteorological Society
Abstract: The authors describe a recent development and some applications of a spectral element dynamical core. The improvements and development include the following: (i) the code was converted from FORTRAN 77 to FORTRAN 90; (ii) ...
Atmospheric Moisture Budget and Spatial Resolution Dependence of Precipitation Extremes in Aquaplanet Simulations
Publisher: American Meteorological Society
Abstract: his study investigates the moisture budgets and resolution dependency of precipitation extremes in an aquaplanet framework based on the Community Atmosphere Model, version 4 (CAM4). Moisture budgets from simulations using ...
Effects of Localized Grid Refinement on the General Circulation and Climatology in the Community Atmosphere Model
Publisher: American Meteorological Society
Abstract: sing the spectral element (SE) dynamical core within the National Center for Atmospheric Research?Department of Energy Community Atmosphere Model (CAM), a regionally refined nest at 0.25° (~28 km) horizontal resolution ...
A Spectral Deferred Correction Method Applied to the Shallow Water Equations on a Sphere
Publisher: American Meteorological Society
Abstract: lthough significant gains have been made in achieving high-order spatial accuracy in global climate modeling, less attention has been given to the impact imposed by low-order temporal discretizations. For long-time ...
Aquaplanet Experiments Using CAM’s Variable-Resolution Dynamical Core
Publisher: American Meteorological Society
Abstract: variable-resolution option has been added within the spectral element (SE) dynamical core of the U.S. Department of Energy (DOE)?NCAR Community Atmosphere Model (CAM). CAM-SE allows for static refinement via conforming ...
CAM-SE–CSLAM: Consistent Coupling of a Conservative Semi-Lagrangian Finite-Volume Method with Spectral Element Dynamics
Publisher: American Meteorological Society
Abstract: n algorithm to consistently couple a conservative semi-Lagrangian finite-volume transport scheme with a spectral element (SE) dynamical core is presented. The semi-Lagrangian finite-volume scheme is the Conservative ...