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SCIENTIFIC DISCOVERYNew Climate Report Shows Regional Impacts
Evan Mills and Michael Wehner, researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory, contributed to the analysis of the effects of climate change on all regions of the United States, described in a major report released June 16, 2009 by the multi-agency U.S. Global Change Research Program. For the southwest region of the United States the report forecasts a hotter, drier climate with significant effects on the environment, agriculture and health. Global Climate Change Impacts in the United States covers such effects as changes in rainfall patterns, drought, wildfire, Atlantic hurricanes, and effects on food production, fish stocks and other wildlife, energy, agriculture, water supplies, and coastal communities. The report addresses nine zones of the United States (Southwest, Northwest, Great Plains, Midwest, Southeast, Northeast, Alaska, U.S. islands, and coasts), and describes potential climate change effects in each. Some states may fall in more than one zone; California is part of the southwest zone, but also the coastal zone. The precipitation map shown is one of the projections developed by Wehner. It shows, among other things, a substantial reduction in springtime rains in California, and summertime rains in the Pacific Northwest. “Even in areas where precipitation is projected to increase, higher temperatures will cause greater evaporation leading to a future where drought conditions are the normal state. In the southwest United States, water resource issues will become a major issue,” says Wehner. more
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As of Oct. 1, Jeff Nichols is ORNL's Associate Lab Director for Computing and Computational Sciences. He had held the position on an interim basis since April, when Thomas Zacharia was named Deputy Lab Director for Science and Technology.
In 2002, Nichols joined ORNL as director of the Computer Science and Mathematics Division. He was named Deputy Associate Lab Director for Computational Sciences in December 2007. Before coming to Oak Ridge, Nichols was deputy director of the Environmental Molecular Sciences Laboratory at Pacific Northwest National Laboratory.
Earlier in his career, he worked as a staff scientist with IBM at the Utah Supercomputing Institute, an associate professor of chemistry at Malone College (Canton, Ohio), and a postdoc at Case Western Reserve University and the University of Utah.
Speeding up Data Transfers: Bigger Pipes between NERSC and OLCF
Network systems engineers from the Department of Energy’s (DOE) Energy Sciences Network (ESnet), National Energy Research Scientific Computing Center (NERSC) and Oak Ridge Leadership Computing Facility (OLCF) are teaming up to optimize wide-area network (WAN) data transfers. Oak Ridge Leadership Computing Facility (OLCF), located in the National Center for Computational Science (NCCS) at Oak Ridge National Laboratory in Tennessee, and NERSC, located at Lawrence Berkeley National Laboratory in California, are home to some of the fastest supercomputers in the world. A number of research groups use resources at both centers. ESnet, DOE’s high-speed network, connects the two centers, as well as other national labs and universities around the country. With the installation and deployment of new dedicated data transfer nodes at NERSC and OLCF linked by ESnet, researchers are now able to move large data sets between each facility’s mass storage systems at a rate of 200 megabytes per second (MB/sec). At this rate, 74 terabytes of information in the U.S. Library of Congress’ digital collection could be transferred in approximately four days. more |
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