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From:Science (Vol. 264, Issue 5157) Peer-ReviewedHigh-resolution numerical simulations were made of unforced, planetary-scale fluid dynamics. in particular, the simulation was based on the quasi-geostrophic equations for a Boussinesq fluid in a uniformly rotating and...
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From:Science (Vol. 274, Issue 5290) Peer-ReviewedAnalyses of tiny grains of long-dead stars found in meteorites are providing new data on the age of the Milky Way and of the universe. The isotopic composition of each grain reveals the type of star in which it formed....
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From:Bulletin of the American Meteorological Society (Vol. 99, Issue 11) Peer-ReviewedABSTRACTS This article presents the prospects of measurement systems for wind hazards and turbulence at airports, which have been explored in the Ultrafast Wind Sensors (UFO) project. At France's Toulouse-Blagnac...
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From:Bulletin of the American Meteorological Society (Vol. 99, Issue 12) Peer-ReviewedABSTRACT Recommendations are presented for in situ and remote sensing instruments and capabilities needed to advance the study of convection and turbulence in the atmosphere. These recommendations emerged from a...
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From:Atmospheric Measurement Techniques (Vol. 12, Issue 7) Peer-Reviewed
The new BELUGA (Balloon-bornE moduLar Utility for profilinG the lower Atmosphere) tethered balloon system is introduced. It combines a set of instruments to measure turbulent and radiative parameters and energy...
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From:Progress In Electromagnetics Research B (Vol. 60) Peer-ReviewedThe split-step Fourier (SSF) algorithm is applied to simulate the propagation of radio waves in an atmospheric duct. The refractive-index fluctuation in the ducts is assumed to follow a two-dimensional Kolmogorov power...
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From:Ploughshares (Vol. 43, Issue 1)When the pilot calls it rough air , I think of a cat's tongue, as if the air itself were textured, as if we could feel its sandpaper licking our skin. I swallow my ears open, and the silence which is not silence at all...
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From:Nature (Vol. 456, Issue 7219) Peer-ReviewedQuantum information is usually sent by light that is 'entangled'. This means that properties of photons sent between the two parties are quantum mechanically linked, and that the information changes when it is 'read',...
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From:Nature (Vol. 403, Issue 6765) Peer-ReviewedAuthor(s): Roberto Ragazzoni (corresponding author) [1]; Enrico Marchetti [2]; Gianpaolo Valente [3] Adaptive-optics systems can in principle allow a telescope to achieve performance at its theoretical maximum...
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From:Science (Vol. 256, Issue 5056) Peer-ReviewedEuropean cooperation in astronomy is so well developed that even the insular British will soon depend on international partnerships for their premier observing facilities. This trend toward collaborative projects is...
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From:Atmospheric Chemistry and Physics (Vol. 18, Issue 17) Peer-Reviewed
Heavy particulate pollution events have frequently occurred in the North China Plain over the past decades. Due to high emissions and poor dispersion conditions, issues are becoming increasingly serious during cold...
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From:Canadian Journal of Civil Engineering (Vol. 33, Issue 2) Peer-ReviewedAbstract: Both frequency- and time-domain methods have been employed in the dynamic analysis of guyed telecommunication masts subjected to turbulent winds. Although the probabilistic frequency-domain approach offers...
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From:PLoS ONE (Vol. 11, Issue 8) Peer-ReviewedThe settling velocities of natural, synthetic, and industrial particles were measured in a grid turbulence facility using optical measurement techniques. Particle image velocimetry and 2D particle tracking were used to...
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From:Bulletin of the American Meteorological Society (Vol. 102, Issue 7) Peer-Reviewed
The CROSSINN Field Experiment: 3-D Flow Structure and Boundary Layer Behavior in an Austrian Valley.
The exchange of mass, momentum, moisture, and energy over horizontally homogeneous, flat terrain is mostly driven by vertical turbulent mixing related to buoyancy or shear. In the boundary layer over mountainous terrain... -
From:Progress In Electromagnetics Research Letters (Vol. 85) Peer-ReviewedThe analytical propagation equation of a four-petal Lorentz-Gauss (FPLG) beam propagating through atmospheric turbulence is derived, and the spreading of average intensity is analyzed by using numerical examples. It is...
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From:Mechanical Engineering-CIME (Vol. 128, Issue 6) Peer-ReviewedAT A RECENT HIGH-PERFORMANCE computing conference, University of Minnesota researchers Paul Woodward and David Porter used Big Ben, the 10-teraflop Cray XT3 system housed at the Pittsburgh Supercomputing Center, to...
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From:Bulletin of the American Meteorological Society (Vol. 101, Issue 5) Peer-ReviewedJoe Alfieri, USDA-ARS research physical scientist, and Sebastian Los, graduate student at Utah State University, measuring the height of an open-path gas analyzer and three-dimensional sonic anemometer deployed below...
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From:Arctic Research of the United States (Vol. 12) Peer-ReviewedNOAA performs research in the high-latitude regions of the planet in connection with its environmental assessment, monitoring and prediction responsibilities. Individual research programs focus on scientific questions...
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From:Science (Vol. 272, Issue 5266) Peer-ReviewedThree helioseismology experiments aboard the European Space Agency's SOHO solar observatory reveal information about the internal structure of the sun. Scientists are comparing data from this Solar Oscillations...
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From:Canadian Journal of Physics (Vol. 94, Issue 11) Peer-ReviewedIn the present work, we propose a modification to the standard K-[epsilon] model for simulating homogeneous decaying turbulence subjected to uniform rotation. In this modification, the dissipation rate equation is...