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September 23, 2005
The U.S. Department of Energy's Atmospheric Radiation Measurement Program (ARM) will send a data acquisition system to Niger next year to collect climate information in this data-sparse region. The move is part of a new user facility established by ARM.
Information obtained during the year-long field campaign should help scientists better understand two important relationships - one between dust and climate and another concerning clouds, heating and monsoon strength.
Pacific Northwest National Laboratory, along with seven other national laboratories, shares management duties for the infrastructure that makes up ARM Climate Research Facility (ACRF).
This elements involved include engineering, data archival and operations activities for obtaining atmospheric measurements from research sites around the world.
The six data collection sites include one in Oklahoma, two in Alaska and three in the Western Pacific -- all of which contain a variety of state- of-the-art active and passive remote sensing instruments.
"Fifteen years ago, it was unheard of to take continuous long-term climate measurements with this high of quality from the ground," said PNNL's Jimmy Voyles, who coordinates the multi-lab user facility for the DOE. "ACRF's real-time data and quality analysis have revolutionized climate data gathering."
Each of the sites provides data for climate research. The Western Pacific sites, for example, are in the tropical warm pool, where warm ocean temperatures produce an abundance of water vapor and cloud formation. This region, sometimes referred to as the "boiler box" of the earth's climate, is an important driver of the global water cycle and plays a crucial role in climate oscillations such as the El Niño cycle.
In addition to the fixed collection sites, ACRF operates a mobile facility. "We recognize that there are other scientifically important climate regions in addition to the regions we are working in," Voyles said. "Our mobile facility fills these voids."
In 2006, the mobile facility will join an ongoing international experiment in Niger to provide the first-ever set of continuous ground-based measurements of solar and thermal radiation for comparison to satellite data. As part of the ACRF national user facility, the mobile facility is available to researchers worldwide.
Using a supercomputer to perform quantum calculations, PNNL scientists have characterized a material that might allow on-board refueling of hydrogen powered vehicles.
Researchers, led by Maciej Gutowski, looked at different crystalline structures of a compound made up of nitrogen, boron and hydrogen -- NBH6 -- and found one that might be more stable compared to ammonia borane, a molecular crystal built of NH3BH3 molecules. Ammonia borane can hold a lot of hydrogen, but isn't easily reversible -- or able to be refilled with hydrogen. Ammonia borane, as a storage material, would likely have to be removed from the vehicle and be sent to a processing plant to undergo a reaction to be refilled.
The more stable compound, diammoniate of diborane (DADB) holds more promise for reversibility. Initial thermodynamic properties for the compound indicate it might spontaneously uptake hydrogen fuel.
This work is performed under the Grand Challenge Project "Computational studies of materials to hydrogen storage" in the Molecular Sciences Computing Facility at PNNL. Researchers plan to perform additional calculations, synthesize the diammoniate of diborane compound and test their theories on the material in the coming year.
May 23, 2013 |
The study of climate change is one of those scientific problems where it is almost essential to model the entire Earth to attain accurate results and make worthwhile predictions. In an attempt to make climate science more accessible to smaller research facilities, NASA introduced what they call ‘Climate in a Box,’ a system they note acts as a desktop supercomputer.
May 22, 2013 |
At some point in the not-too-distant future, building powerful, miniature computing systems will be considered a hobby for high schoolers, just as robotics or even Lego-building are today. That could be made possible through recent advancements made with the Raspberry Pi computers.
May 16, 2013 |
When it comes to cloud, long distances mean unacceptably high latencies. Researchers from the University of Bonn in Germany examined those latency issues of doing CFD modeling in the cloud by utilizing a common CFD and its utilization in HPC instance types including both CPU and GPU cores of Amazon EC2.
May 15, 2013 |
Supercomputers at the Department of Energy’s National Energy Research Scientific Computing Center (NERSC) have worked on important computational problems such as collapse of the atomic state, the optimization of chemical catalysts, and now modeling popping bubbles.
05/10/2013 | Cleversafe, Cray, DDN, NetApp, & Panasas | From Wall Street to Hollywood, drug discovery to homeland security, companies and organizations of all sizes and stripes are coming face to face with the challenges – and opportunities – afforded by Big Data. Before anyone can utilize these extraordinary data repositories, however, they must first harness and manage their data stores, and do so utilizing technologies that underscore affordability, security, and scalability.
04/15/2013 | Bull | “50% of HPC users say their largest jobs scale to 120 cores or less.” How about yours? Are your codes ready to take advantage of today’s and tomorrow’s ultra-parallel HPC systems? Download this White Paper by Analysts Intersect360 Research to see what Bull and Intel’s Center for Excellence in Parallel Programming can do for your codes.
In this demonstration of SGI DMF ZeroWatt disk solution, Dr. Eng Lim Goh, SGI CTO, discusses a function of SGI DMF software to reduce costs and power consumption in an exascale (Big Data) storage datacenter.
The Cray CS300-AC cluster supercomputer offers energy efficient, air-cooled design based on modular, industry-standard platforms featuring the latest processor and network technologies and a wide range of datacenter cooling requirements.