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SciDAC Collaborative Design and Development (2001-2006)

      of the Community Climate System Model: Working Notes

The  Community Climate System Model, is a collaborative effort involving NSF, DOE and NASA aimed at providing US researchers with state of the art coupled climate simulation capabilities.  The DOE national laboratories involved are ANL, LANL, LLNL, LBL, ORNL and PNL.  The National Center for Atmospheric Research and the NASA/Goddard Data Assimilation Office are the primary, non-DOE collaborators.  John Drake (drakejb@ornl.gov) and Phil Jones (pwjones@lanl.gov) are co-PI's for the project and the primary DOE-lab contacts. Dr. Bob Malone is now PI-emeritis for the project. Peter Gent from NCAR is the PI of the overall CCSM project.

The LANL COSIM, project and the LLNL PCMDI, project, are also DOE OBER funded Climate Change Prediction Projects with close ties to the CCSM Consortium.
 

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CAUTION:  Modelers Working

• This project is complete and a final summary report is available (pdf)).
• The official project webpage under SciDAC.org is linked here .
• A working notes wiki is being hosted by Argonne at Consoritum wiki .
• The project committed to various milestones for 2005. Our Q1 milestone was to implement a ocean biogeochemistry model that includes the effects of carbon and sulfur species in the current version of POP (Parallel Ocean Program, i.e. POP2.0) and further to integrate this version of POP with the CCSM3 to simulate the response of ocean biogeochemistry to climate. (See 2005Q1). The major milestone for 2005 was to develop a coupled climate model with an interactive carbon cycle, a sub model of secondary sulfur aerosols, and an interactive terrestrial biosphere. This model will enable studies of the interactions between the carbon cycle and climate and between secondary sulfur aerosols and climate. THESE MILESTONES HAVE BEEN MET! (See 2005Q2, 2005Q3, and 2005Q4).
• The CCSM development team has produced several documents in support of an open design process for scientists and software engineers. The public pages for the Software Engineering Working Group is collecting these documents.
• Task specification and progress are being tracked on the chart.
• Meeting and teleconference material is linked here ( especially for AG meetings).
• PERC Performance Studies
• SciDAC Earth System Grid
• TSTT Mesh Tools
• TOPS PDE Tools
• Data Management Tools
• Developers associated with this project may apply for accounts on the National Center for Computational Sciences (NCCS) computers through the Climate Science End Station allocation and by filling out the form accounts. The computational experiments are coordinated through the NLCF Climate End Station (CES). The procedure of applying for NCAR code repository access is documented in Chapter 7 of the CCSM Software Developer's Guide.
• An interesting (and helpful) evaluation of software engineering practices associated with the CCSM before this project began was done by Tom Swain (a professor of SE at U. Tenn). The report is linked here.
• A special issue of the International Journal of High Perfomamnce Computing and Applications on Climate Modeling has come out that details many of the efforts of this project. John Drake, Phil Jones and George Carr were the editors for this special issue. Thanks to all involved! But especially Dr. Ari Patrinos and Dr. Anjuli Bamzai. Articles can be viewed online at the link above.
• There have been over 200 papers written comparing simulations from all the climate models submitted to the Fourth Assessment Report of the IPCC. Many of these are listed at the IPCC Model Output Page.

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John B. Drake / (drakejb@ornl.gov)

Last Modified November, 2006