A set of newly documented small-scale circulations embedded in thunderstorm squall lines not only spew destructive straight-line winds, but may spawn up to 20% of all U.S. tornadoes. And the remnant circulations from large thunderstorm clusters can survive for days, triggering new storm cells. Over warm oceans, similar remnant circulations provide seed for hurricane development. Scientists expect these and other findings to help improve forecasts of damaging winds and heavy rain.
This Doppler radar image collected by the National Weather Service on the evening of June 11, 2001, shows a strong bow echo moving southeast across Wisconsin. (Image courtesy National Oceanic and Atmospheric Administration)
This menacing cloud was part of a mesoscale convective system studied in a previous Montana field project. Such systems, dominated by strong, outflowing winds and heavy rain, were the focus of the Bow Echo and MCV Experiment.
The new results emerge from three-dimensional portraits of thunderstorms collected across the storm-tossed Midwest in a field study coordinated by the National Center for Atmospheric Research (NCAR) in 2003. A summary will be presented on October 5 in Hyannis, Massachusetts at the American Meteorological Society’s 22nd Conference on Severe Local Storms.
Based just east of St. Louis, the Bow Echo and MCV Experiment (BAMEX) employed aircraft and ground-based storm chasers to document a wide range of storm types that prowled the Midwest from May to July 2003. Over a dozen colleges and universities joined NCAR and the National Oceanic and Atmospheric Administration (NOAA) for BAMEX. Key funding for the $4 million study was provided by the National Science Foundation, NCARs primary sponsor.
Anatta | EurekAlert!
Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle
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Polar ice may be softer than we thought
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In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
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