Energy considerations in the Community Atmosphere Model (CAM)

Description of the NCAR Community Atmosphere Model ( CAM 4 . 0 )

Efficient Parallel I/O in Community Atmosphere Model (CAM)

2 Abstract Century-long global climate simulations at high resolutions generate large amounts of data in a parallel architecture. Currently, Community Atmosphere Model (CAM), the atmospheric component of the NCAR Community Climate System Model (CCSM), uses sequential I/O which causes a serious bottleneck for these simulations. We describe the parallel I/O development of CAM in this paper. The p...

New dissipation mechanisms for the spectral element dynamical core in the Community Atmosphere Model (CAM)

We introduce new resolution-aware dissipation mechanisms for CAM-SE (CAM with the spectral element dycore from HOMME) and evaluate their performance for a set of problems with locally refined grids. CAM-SE uses unstructured quadrilateral meshes with hyperviscosity for horizontal dissipation. The hyperviscosity operator requires a resolution-dependent coefficient. For variable-resolution grids, ...

CAM-SE: A scalable spectral element dynamical core for the Community Atmosphere Model

The Community Atmosphere Model (CAM) version 5 includes a spectral element dynamical core option from NCAR’s High-Order Method Modeling Environment. It is a continuous Galerkin spectral finite element method designed for fully unstructured quadrilateral meshes. The current configurations in CAM are based on the cubedsphere grid. The main motivation for including a spectral element dynamical cor...

Description of the NCAR Community Atmosphere Model ( CAM 4 . 0 ) Richard