Dec 3, 2024 · 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 …

In many geophysical flows (rivers, atmospheric boundary layer), the flow turbulence is dominated by the coherent structures and turbulent events. A turbulent event is a series of turbulent fluctuations that contain more energy than the average flow turbulence.

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.

Atmospheric turbulence is irregular fluctuations occurring in atmospheric air flow. These fluctua- tions are random and continuously changing and are superimposed on the mean motion of the air (American Meteorological Society 2018). Introduction.

Jul 8, 2022 · 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.

Dec 2, 2021 · In this paper, we summarize the experimental measurements and related theoretical results on statistical characteristics of atmospheric turbulence and further conclude the turbulent structure in Earth’s atmosphere.

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.

Understanding turbulent transport of momentum and scalars such as water vapor and CO2 in the atmospheric boundary layer plays an important role in many disciplines such as meteorology, hydrology, agriculture and air quality control.

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.