Results 21 to 30 of about 903,153 (145)

The Atmospheric Boundary Layer and the “Gray Zone” of Turbulence: A Critical Review

open access: yesJournal of Geophysical Research: Atmospheres, 2020
Recent increases in computing power mean that atmospheric models for numerical weather prediction are now able to operate at grid spacings of the order of a few hundred meters, comparable to the dominant turbulence length scales in the atmospheric ...
Rachel Honnert   +9 more
semanticscholar   +1 more source

Robust propagation of pin-like optical beam through atmospheric turbulence

open access: yesAPL Photonics, 2019
We design and demonstrate what we called shape-preserving “optical pin beams” (OPBs) that possess stable wavefronts against diffraction and ambient turbulence during free-space long distance propagation.
Ze Zhang   +9 more
semanticscholar   +1 more source

The collapse of atmospheric turbulence [PDF]

open access: yesThe Project Repository Journal, 2021
The collapse of atmospheric turbulence The COAT project aims to predict the cessation of continuous turbulence in the evening boundary layer. The interaction between the lower atmosphere and the surface is studied in detail, as this plays a crucial role in the dynamics.
openaire   +1 more source

Performance analysis of an adaptive optics system for free-space optics communication through atmospheric turbulence

open access: yesScientific Reports, 2018
The performance of free-space optics communication (FSOC) is greatly degraded by atmospheric turbulence. Adaptive optics (AO) is an effective method for attenuating the influence.
Yukun Wang   +9 more
semanticscholar   +1 more source

Østerild: A natural laboratory for atmospheric turbulence

open access: yesJournal of Renewable and Sustainable Energy, 2019
Understanding atmospheric turbulence is without a doubt one of the most complex subjects in meteorology. However, its behavior can be more easily investigated by analysis of high-quality measurements of the velocity and temperature fluctuations. Here, we
A. Peña
semanticscholar   +1 more source

The Impact of Atmospheric Turbulence on Terahertz Communication

open access: yesIEEE Access, 2019
The application prospect of terahertz (THz) has been vastly enriched because it has the advantages of good penetrating power, high security, accurate directionality, and high bandwidth.
Lei Cang, Hengkai Zhao, G. Zheng
semanticscholar   +1 more source

Dependence of near‐surface similarity scaling on the anisotropy of atmospheric turbulence

open access: yesQuarterly journal of the Royal Meteorological Society. Royal Meteorological Society, 2018
Turbulence data from the CASES‐99 field experiment, over comparatively horizontally homogeneous and flat terrain, are separated based on the anisotropy of the Reynolds stress tensor (into isotropic, two‐component axisymmetric and one‐component turbulence)
I. Stiperski, M. Calaf
semanticscholar   +1 more source

Scaling, Anisotropy, and Complexity in Near‐Surface Atmospheric Turbulence

open access: yesJournal of Geophysical Research - Atmospheres, 2018
The development of a unified similarity scaling has so far failed over complex surfaces, as scaling studies show large deviations from the empirical formulations developed over flat and horizontally homogeneous terrain as well as large deviations between
I. Stiperski, M. Calaf, M. Rotach
semanticscholar   +1 more source

Experimental Investigation of All-Optical Relay-Assisted 10 Gb/s FSO Link Over the Atmospheric Turbulence Channel

open access: yesJournal of Lightwave Technology, 2017
This paper presents novel experimental results for a 10 Gb/s triple-hop relay-based all-optical free space optical (FSO) system by employing the amplify-and-forward relaying scheme.
N. A. M. Nor   +7 more
semanticscholar   +1 more source

ATMOSPHERIC TURBULENCE

open access: yes, 1959
Some characteristics of turbulence near the ground can begin to be interpreted There is yet little information about others (even near the ground) such as spectra measured along the vertical lines, or cross spectra between two variables. Further, results of turbulence characteristics over water are few and confusing, and no information exists about the
openaire   +3 more sources

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