2024年12月3日 · atmospheric turbulence, small-scale, irregular air motions characterized by winds that vary in speed and direction. Turbulence is important because it mixes and churns the atmosphere and causes water vapour, smoke, and other substances, as well as energy, to become distributed both vertically and horizontally.

Atmospheric turbulence usually refers to the three-dimensional, chaotic flow of air in the Earth's atmosphere with a time scale of less than 1 sec to typically 1 h. The corresponding length scales are from 1 mm (thus, five orders of magnitude smaller than the …

Part I introduces the concepts and equations of turbulence. It includes a rigorous introduc-tion to the principal types of numerical modeling of turbulent flows. Part II describes turbulence in the atmospheric boundary layer.

2024年7月1日 · Atmospheric turbulence within the Earth’s atmosphere poses fundamental challenges for applications such as remote sensing, free-space optical communications and astronomical observation due to...

Random variations in the atmospheric temperature and pressure along the laser path cause the formation of turbulent cells that cause constructive or destructive interference of the propagating beam. This is called atmospheric turbulence.

Atmospheric turbulence consists of wide range of scales of motion, with energy spectra indicating 3 regions corresponding to energy producing large eddies, intermediate eddies in the inertial sub-range involved in energy transfer and very small eddies in the dissipation region.

AO is a key component of current and future large astronomical telescopes. What (Good) is Adaptive Optics? AO is traditionally used to improve images in “weak scattering” of light through atmospheric turbulence. There are many other problems and scattering regimes where the …

2018年10月20日 · Atmospheric turbulence is irregular fluctuations occurring in atmospheric air flow. These fluctuations are random and continuously changing and are superimposed on the mean motion of the air (American Meteorological Society 2018).

2022年7月8日 · Thus, the issue contains a number of new results from original studies of atmospheric turbulence, including an analysis of the spectral structure of turbulent fluctuations in different ranges. Interesting methods have been proposed for measuring and studying atmospheric and optical turbulence.

Atmospheric turbulence refers to the irregular and chaotic motion of air in the Earth's atmosphere, which can affect the propagation of light and other electromagnetic waves. This turbulence is primarily caused by variations in temperature, pressure, and wind speed at different altitudes.