- Working Groups
Version 4 of the Whole Atmosphere Community Climate Model (WACCM4) is a capability of the Community Atmosphere Model (CAM), which is a component of the Community Earth System Model, (CESM). WACCM4 was first released with the public release of CESM1.0 on June 25, 2010, with several updates released subsequently. As of CESM1.0.4, released on February 21, 2012, WACCM-X is available as an option to extend the top boundary of the atmosphere model to the upper thermosphere. WACCM4 is supported for use only as a component of CESM, and not for uncoupled standalone calculations.
WACCM4 is built by selecting an appropriate WACCM component set and building the CESM as described in the User Guides for CESM 1.0 and CESM 1.1. Scripts included with the source code will automatically download the input data sets needed to run the model for the component set and horizontal grid selected by the user. WACCM may be run coupled to a full ocean (B-compsets, supported at the f19_g16 grid), or a data ocean (F-compsets, supported at the f19_f19 and f45_f45 grids). The CAM documentation for CESM1.0 and CESM1.1 include sections for WACCM in the CAM scientific description.
A quickstart guide for building and running WACCM on NCAR's bluefire and NASA's pleiades clusters is now available for download here.
Please check the WACCM Support Forum for known bugs, other software and run-time issues, science issues, and general announcements.
GEOV is an IDL-based viewer for geophysical history files created by NCAR's CAM, WACCM and MOZART models. GEOV can be downloaded as a gzipped tarball here.
Additional CAM diagnostic packages are described under CAM Post-Processing Utilities on the CAM documentation page. Diagnostic packages for all model components (atmosphere, land, ice, and ocean) can be found from the component post-processing utilities page.
Users may validate their implementation of CESM/WACCM by repeating experiments we have done at NCAR, and using the component post-processing utilities to compare the climate generated to output we have made available publicly on the Earth System Grid. Please visit our CESM 1.0 experiments and diagnostics page for an updated list of experiments with links to output data locations. Output from additional experiments will be made available on a timeline in accordance with the CMIP5 data policy.