ORNL, NCAR are official partners in climate studies

March 08, 2004

OAK RIDGE, Tenn., March 8, 2004 -- More accurate global climate models are in the forecast because of a collaboration between the Department of Energy's Oak Ridge National Laboratory and the National Center for Atmospheric Research.

The memorandum of understanding announced today takes advantage of unique capabilities at each organization and makes official a long-standing research relationship between ORNL's Center for Computational Sciences and NCAR.

"Computing has become an integral part of the scientific enterprise, providing a link between theory and experiment for complex systems like the Earth's climate," said Jeff Wadsworth, director of ORNL. "Through collaborations like this, we are confident that we can make tremendous progress in understanding global climate change in much greater detail."

An important task for ORNL and NCAR will be to perform climate change simulations in support of the Intergovernmental Panel on Climate Change Fourth Assessment. The global climate change assessment community is eagerly awaiting the results, which will reflect the input from a number of institutions worldwide. The results will be announced in 2007.

The collaboration between ORNL and NCAR pools the vast simulation resources and scientific talent of the two institutions, which have considerable staff and computational hardware that can be used to explore novel experimental and computational designs. John Drake of the lab's Computer Science and Mathematics Division envisions the partnership leading to innovative solutions to problems and to more sophisticated models that focus on global carbon cycle, dynamic vegetation in the land model, more realistic hydrology and river routing, and progress in a number of other areas.

As part of this effort, the Center for Computational Sciences is providing dedicated computing resources to perform climate change simulations. The simulations could require several months to complete, even with 12 nodes (384 processors) of the IBM Cheetah's 27 nodes assigned to the task. And, equally important, the collaboration focuses on making the most of NCAR and ORNL's vast computing resources by benchmarking new architectures and evaluating programming models required for climate simulations.

"The re-emergence of Cray for scientific computation has changed the landscape of parallel computing," Drake said. "We expect to make very good use of the Cray X1 for atmosphere, ocean, land and sea ice climate simulations."

In recent years, ORNL and NCAR collaborated in the development of the Community Climate System Model and continue to study a broad range of scientific and technical challenges in modeling the Earth's climate. The CCSM simulates Earth's climate by performing modeling in the atmosphere, ocean, land and sea ice. The model is fully integrated and provides state-of-the-art computer simulations of the Earth's past, present and future climates.

Global climate modeling is considered vital to understanding potential effects of increased greenhouse gases and to evaluating likely effects of policies. As computing power continues to increase, models can become more sophisticated and take into account many more variables, thereby increasing the accuracy.

"The sustained partnership between NCAR and ORNL has contributed to our increasingly robust understanding of the causes and characteristics of past changes in Earth's climate," said NCAR Director Timothy Killeen. "The next generation of model, made possible though our continued collaborative work, will enable exciting new tools for scientists and decision makers interested in the nature and extent of future changes in the Earth system."
The Center for Computational Sciences, established in 1992 as a DOE high-performance computing research center, is a designated user facility focused on grand challenges in science and engineering. The center is housed in a new 170,000-square-foot building with a 40,000-square-foot computer center. It is the nation's largest facility for unclassified scientific research.

ORNL is managed by UT-Battelle for DOE. NCAR is managed and operated by the University Corp. for Atmospheric Research under contract from the National Science Foundation.

DOE/Oak Ridge National Laboratory

Related Sea Ice Articles from Brightsurf:

2020 Arctic sea ice minimum at second lowest on record
NASA and the National Snow and Ice Data Center (NSIDC) at the University of Colorado Boulder shows that the 2020 minimum extent, which was likely reached on Sept.

Sea ice triggered the Little Ice Age, finds a new study
A new study finds a trigger for the Little Ice Age that cooled Europe from the 1300s through mid-1800s, and supports surprising model results suggesting that under the right conditions sudden climate changes can occur spontaneously, without external forcing.

How much will polar ice sheets add to sea level rise?
Over 99% of terrestrial ice is bound up in the ice sheets covering Antarctic and Greenland.

A snapshot of melting Arctic sea ice during the summer of 2018
A study appearing July 29 in the journal Heliyon details the changes that occurred in the Arctic in September of 2018, a year when nearly 10 million kilometers of sea ice were lost throughout the summer.

Antarctic penguins happier with less sea ice
Researchers have been surprised to find that Adélie penguins in Antarctica prefer reduced sea-ice conditions, not just a little bit, but a lot.

Seasonal sea ice changes hold clues to controlling CO2 levels, ancient ice shows
New research has shed light on the role sea ice plays in managing atmospheric carbon dioxide levels.

Artificial intelligence could revolutionize sea ice warnings
Today, large resources are used to provide vessels in the polar seas with warnings about the spread of sea ice.

Antarctic sea ice loss explained in new study
Scientists have discovered that the summer sea ice in the Weddell Sea sector of Antarctica has decreased by one million square kilometres -- an area twice the size of Spain -- in the last five years, with implications for the marine ecosystem.

Antarctic sea-ice models improve for the next IPCC report
All the new coupled climate models project that the area of sea ice around Antarctica will decline by 2100, but the amount of loss varies considerably between the emissions scenarios.

Earth's glacial cycles enhanced by Antarctic sea-ice
A 784,000 year climate simulation suggests that Southern Ocean sea ice significantly reduces deep ocean ventilation to the atmosphere during glacial periods by reducing both atmospheric exposure of surface waters and vertical mixing of deep ocean waters; in a global carbon cycle model, these effects led to a 40 ppm reduction in atmospheric CO2 during glacial periods relative to pre-industrial level, suggesting how sea ice can drive carbon sequestration early within a glacial cycle.

Read More: Sea Ice News and Sea Ice Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.