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

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

Impact of physical parameterizations on idealized tropical cyclones in the Community Atmosphere Model

[1] This paper explores the impact of the physical parameterization suite on the evolution of an idealized tropical cyclone within the National Center for Atmospheric Research’s (NCAR) Community Atmosphere Model (CAM). The CAM versions 3.1 and 4 are used to study the development of an initially weak vortex in an idealized environment over a 10‐day simulation period within an aqua‐planet setup. ...

Assessing the Uncertainty in Tropical Cyclone Simulations in NCARs Community Atmosphere Model

The paper explores the impact of the initial-data, parameter and structural model uncertainty on the simulation of a tropical cyclone-like vortex in the National Center for Atmospheric Research’s (NCAR) Community Atmosphere Model (CAM). An analytic technique is used to initialize the model with an idealized weak vortex that develops into a tropical cyclone over ten simulation days. A total of 7...

Extending scalability of the community atmosphere model

The Community Atmosphere Model (CAM) is the atmosphere component of the Community Climate System Model (CCSM), and is the largest consumer of computing resources in typical CCSM simulations. The parallel implementation of the Community Atmosphere Model (CAM) employs a number of different domain decompositions. Currently, each decomposition must utilize the same number of MPI processes, limiting...

The Versatile Integrator of Surface and Atmosphere processes Part 1. Model description

This paper describes an integration of recent new developments in snow, runoff and vegetation growth into the National Center for Atmospheric Research Land Surface Model (NCAR LSM). The new model, referred to as the Versatile Integrator of Surface and Atmosphere processes (VISA), has been validated with observed data. The results have demonstrated that the NCAR LSM, after integrating with these...