The Community Climate System Model (CCSM) project has been developed under the National Science Foundation's (NSF) and the Department of Energy's (DOE) sponsorship at NCAR, with the National Oceanic and Atmospheric Administration (NOAA), and the National Aeronautics and Space Administration (NASA) as part of the U.S. Global Change Research Program and the U.S. Climate Change Science Program. The project is coordinated by a CCSM Scientific Steering Committee consisting of both NCAR and non-NCAR scientists.
Over the past year, CCSM3 has been developed and released to the community, as have the IPCC simulations and data for the AR4. The improvements in the functionality include the flexibility to simulate climate over a wide range of spatial resolutions with great fidelity. The atmosphere incorporates new treatments of cloud and ice-phase processes; new dynamical frameworks suitable for modeling atmospheric chemistry; improved parameterization of the interactions among water vapor, solar radiation, and terrestrial thermal radiation; and a new treatment of the effects of aerosols on solar radiation. The land model includes improvements in land-surface physics to reduce temperature biases and new capabilities to enable simulation of dynamic vegetation and the terrestrial carbon cycle. The ocean model has been enhanced with new infrastructure for studying vertical mixing, a more realistic treatment of shortwave absorption by chlorophyll, and improvements to the representation of the ocean mixed layer. The sea ice model includes improved schemes for the horizontal advection of sea ice and for the exchange of salt with the surrounding ocean. The software has been designed so that CCSM3 is readily portable to a wide variety of computer architectures (Collins et al., 2005).
This year's workshop theme is "Crosscutting Science Using CCSM." There are three plenary sessions scheduled with invited speakers for each topic and time for discussion and planning. The first plenary session is entitled IPCC, and the speakers are Ben Santer, Lawrence Livermore National Laboratory, and Jerry Meehl, NCAR. The second plenary session is entitled Paleoclimate and Abrupt Climate Change, and the speakers are Dick Peltier, University of Toronto, and Bette Otto-Bliesner, NCAR. The third plenary session is entitled Challenges of Building an Earth System Model. The speakers are Gordon Bonan, NCAR; Jean-Francois Lamarque, NCAR; Scott Doney, WHOI; and Wiliam Lipscomb, Los Alamos National Lab. The CCSM Working Groups will meet individually during the workshop for 1-1/2 hours to discuss business issues. We will have a formal poster session on Tuesday morning, an Open Forum on Wednesday morning, and a wrap-up session on Thursday morning.
The 2005 CCSM Workshop will be held at the The Village at Breckenridge, in Breckenridge, Colorado. The workshop is open to anyone, but those interested in attending must complete the online registration form (see below). If travel funds are needed, you must submit your registration form no later than Monday, 11 April 2005. When completing the registration form, please indicate specific details of your current work with CCSM or future plans. Lodging, per diem, and ground transportation are most commonly funded.
Inquiries regarding the workshop should be directed to:
NCAR/Climate System Model Program Office
P.O. Box 3000
Boulder, CO 80307