Three "Doppler On Wheels" (DOW) mobile radars developed partly at the National Center for Atmospheric Research (NCAR) are heading toward the mid-Atlantic coast to intercept the eye of Hurricane Isabel as the powerful storm hits land. Meanwhile, the nations next-generation weather model, developed at NCAR and other labs, is training its electronic "eyes" on a virtual Isabel at NCARs supercomputing center in Boulder.
The DOWs will deploy at or near the coast in the direct path of the storm. "From a head-on position," says NCAR affiliate scientist Josh Wurman, "the DOW can collect unprecedented high resolution data and rapid-scan Doppler radar data from inside the eye."
At close range the scans will observe fine-scale but potentially damaging storm features as small as 40-feet across, including wind streaks, gusts and other structures. The DOWs are a collaborative effort between NCAR and the Center for Severe Weather Research. Wurman operates the vehicles through the CSWR, with support primarily from the National Science Foundation.
"This is an exciting opportunity to improve our understanding of the finer scale structure of one of natures most powerful phenomena," says Cliff Jacobs, program director in NSFs division of atmospheric sciences. "Federal support for national centers and university researchers has allowed the nexus of people, tools, and ideas to converge to gain new knowledge about hurricanes."
The newest of the radar systems, called the Rapid-DOW, sends out six radar beams simultaneously. By raking the sky six times faster than traditional single-beam radars, Rapid-DOW can visualize three-dimensional volumes in five-to-ten seconds and observe boundary layer rolls, wind gusts, embedded tornadoes and other phenomena as they evolve.
Back in Boulder, NCAR scientists are running the nations future Weather Research and Forecast (WRF) model on NCARs IBM "Blue Sky" supercomputer, testing the models skill at predicting Isabels intensity, structures and track. Operating on a model grid with data points only 4 kilometers (2.5 miles miles) apart, Blue Sky hums with calculations all night as WRF zooms in on Isabel, bringing into focus the storms internal structure, including eyewall and rain bands. The result is a high-precision, two-day forecast. In the morning, the model starts over to create a new five-day forecast using a 10-kilometer grid and updated conditions.
NCARs primary sponsor, the National Science Foundation (NSF), supported the development of both WRF and the DOW at NCAR. The WRF model is a cooperative effort by NCAR and several federal agencies and military branches.
"Its an exciting opportunity," says scientist Jordan Powers, a WRF development manager at NCAR. "Resolving a hurricanes fine scale structures in real time with this next-generation weather model is breaking new ground for forecasters and researchers."
The DOW is pushing technological limits of its own. "The DOW has revolutionized the study of tornadoes and other violent and small scale atmospheric phenomena," says Wurman. The large, spinning, brightly-colored radar dishes have intercepted the eyes of five hurricanes: Fran, Bonnie, Floyd, Georges and Lili. Data from the retired DOW1 resulted in the discovery of entirely new phenomena in hurricanes, called intense boundary layer rolls, which contain the highest and most dangerous wind gusts.
Though Powers wont be using DOW data for WRFs forecasts this week, he and others may compare Wurmans real-world observations with the model results in the future.
NSF Program Officer: Cliff Jacobs, (703) 292-8521, email@example.com
The National Science Foundation is an independent federal agency that supports fundamental research and education across all fields of science and engineering, with an annual budget of nearly $5.3 billion. National Science Foundation funds reach all 50 states through grants to nearly 2,000 universities and institutions. Each year, NSF receives about 30,000 competitive requests for funding, and makes about 10,000 new funding awards. The National Science Foundation also awards over $200 million in professional and service contracts yearly.
Cheryl Dybas | NSF
Predicting eruptions using satellites and math
28.06.2017 | Frontiers
NASA sees quick development of Hurricane Dora
27.06.2017 | NASA/Goddard Space Flight Center
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
28.06.2017 | Physics and Astronomy
28.06.2017 | Physics and Astronomy
28.06.2017 | Health and Medicine