A recently awarded $716,000 grant from the U.S. Air Force Office of Scientific Research will fund research by Arizona State University professor Alex Mahalov aimed at reducing those anxious moments for air travelers.
Mahalov also will study another kind of atmospheric turbulence that poses problems for astronomers.
Optical turbulence results from the amplitude and phase fluctuations in electromagnetic waves propagating through the atmosphere, which is what causes stars to appear to “twinkle.” It also is a major source of telescope image degradation, making it difficult for astronomers to get clear views into space.
Mahalov is a professor in the Department of Mathematics and Statistics in ASU’s College of Liberal Arts and Science, with a joint appointment in the Department of Mechanical and Aerospace Engineering in the university’s Ira A. Fulton School of Engineering.
Working in the engineering school’s Center for Environmental Fluid Dynamics, Mahalov will use funding from the grant over a three-year period to improve techniques for identifying, forecasting and detecting areas of clear-air turbulence and modeling of optical turbulence under extreme environmental conditions.
He will collaborate with experts at the National Center for Atmospheric Research in Boulder, Colo., on improving the ability of numerical codes to forecast clear-air turbulence, particularly in areas of mountainous terrain.
“Improved real-time predictability and forecasting of high-impact, clear-air turbulence events will minimize the potential for costly devastation to human life and loss of business assets,” Mahalov says.
He also will work with astronomers at the observatories at Mauna Kea in Hawaii on using adaptive optics to reduce telescope image degradation caused by atmospheric optical turbulence.
Mahalov works with ASU’s high-performance computing group on creating real-time, high-resolution environmental forecasts. When researchers study multi-scale dynamics over a relatively limited geographic area, he explains, they need to use high-resolution models to produce accurate predictions.
Mahalov will use the facilities of the engineering school’s High Performance Computing Initiative to address complex research problems, from identifying the optical effects of the jet stream above astronomical observatories to understanding the effects of environmental transport on global and regional scales. Environmental transport involves the movement of chemical and particulate matter – such as ozone and other pollutants – as they are released into the atmosphere.
Mahalov has had almost 100 peer-reviewed research articles published. In 2004 he received a High Performance Computing Challenge grant from the Department of Defense High Performance Computing Modernization Program. The project funded by the grant was the subject of a featured presentation at the annual conference of the International Society for Optical Engineering in San Jose, Calif., in January 2008.
Mahalov often collaborates with top scholars in his field from around the world, including those with the European Center for Medium Range Weather Forecasting in Reading, England and the Laboratoire de Meteorologie Dynamique at the University of Paris.SOURCE:
Joe Kullman | newswise
Clear as mud: Desiccation cracks help reveal the shape of water on Mars
20.04.2018 | Geological Society of America
Hurricane Harvey: Dutch-Texan research shows most fatalities occurred outside flood zones
19.04.2018 | European Geosciences Union
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
20.04.2018 | Physics and Astronomy
20.04.2018 | Interdisciplinary Research
20.04.2018 | Physics and Astronomy