U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights

Ninth Community Climate System Model Workshop
Published: July 19, 2004
Posted: August 17, 2004

The ninth Community Climate System Model (CCSM) Workshop was held July 7-9, 2004, at Santa Fe, New Mexico. The CCSM WS followed the June 23 release of CCSM3.0, the most recent version of the global coupled climate model. CCSM3.0 marks a significant milestone in the development of climate models that now incorporate phenomena ranging from the effect that volcanic eruptions have on temperature patterns to the impact of shifting sea ice on sunlight absorbed by the oceans. The CCSM effort is funded primarily by NSF and DOE. The model was developed at National Center for Atmospheric Research in collaboration with researchers at universities and DOE-lab scientists, with major funding from the National Science Foundation and the Department of Energy. Model results and the underlying computer codes have been released to atmospheric researchers and other users worldwide. Because a single day of simulated climate requires about 3 trillion computer calculations, the project has already consumed more than 7.5 million hoursnearly 1,000 yearsof concurrent computer processor time. Scientists will contribute results from the new system to the next assessment by the Intergovernmental Panel on Climate Change, an international research body that advises policymakers on the likely impacts of climate change. Preliminary results using CCSM3.0 indicate global temperatures could rise by 2.6 degrees Celsius (4.7 degrees Fahrenheit) in a hypothetical scenario in which atmospheric levels of carbon dioxide are suddenly doubled. That is significantly more than the 2° Celsius (3.6° Fahrenheit) increase that had been indicated by the preceding version of the model. In addition to simulating temperatures over the next century, scientists will use the model to study climate patterns of the past, such as the peak of the last ice age 21,000 years ago. They will also use it to probe chemical processes and the cycling of carbon between the atmosphere, ocean, and land, as well as the localized impacts of sulfates and other pollutants on climate.

Contact: Anjuli S Bamzai, SC-74, (301) 903-0294
Topic Areas:

  • Research Area: Earth and Environmental Systems Modeling

Division: SC-23.1 Climate and Environmental Sciences Division, BER
      (formerly SC-74 Environmental Sciences Division, OBER)


BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

May 10, 2019
Quantifying Decision Uncertainty in Water Management via a Coupled Agent-Based Model
Considering risk perception can improve the representation of human decision-making processes in age [more...]

May 09, 2019
Projecting Global Urban Area Growth Through 2100 Based on Historical Time Series Data and Future Scenarios
Study provides country-specific urban area growth models and the first dataset on country-level urba [more...]

May 05, 2019
Calibrating Building Energy Demand Models to Refine Long-Term Energy Planning
A new, flexible calibration approach improved model accuracy in capturing year-to-year changes in bu [more...]

May 03, 2019
Calibration and Uncertainty Analysis of Demeter for Better Downscaling of Global Land Use and Land Cover Projections
Researchers improved the Demeter model’s performance by calibrating key parameters and establi [more...]

Apr 22, 2019
Representation of U.S. Warm Temperature Extremes in Global Climate Model Ensembles
Representation of warm temperature events varies considerably among global climate models, which has [more...]

List all highlights (possible long download time)