Flying clouds over the city

Flying clouds over the city time-lapse. Clouds over the city stock videos and licensed video clips. Through The Clouds - Beautiful 4k Drone footage. Drone sunset video I took after some storms. There were low lying clouds and I couldn't see the sun very well from the ground, so I decided to send up Drone.
stockfootage, template, envato, buildings, business, corporate, cartoons, city, construction, education, food, holidays, industrial, kids, lifest.Physical processes of wavelike cloud formation Clouds – the most easily and naturally observed atmospheric phenomenon-attracted the attention of the first natural philosophers.
They already understood that the variety of cloud forms is related to the weather, i.e. the state of the atmosphere, which is constantly changing.
This idea was very clearly formulated in 1817 by Dove, who noted that "the cloud is not an object, but a process". Earlier Lamarck and Howard have proposed the first scheme of classification of the forms of clouds observed from the ground.

Clouds – the most easily and naturally observed atmospheric phenomenon-attracted the attention of the first natural philosophers. They already understood that the variety of cloud forms is associated with the weather, i.e. with the state of the atmosphere, which is constantly changing. This idea was very clearly formulated in 1817 by Dove, who noted that "the cloud is not an object, but a process". Earlier Lamarck and Howard have proposed the first scheme of classification of the forms of clouds observed from the ground.

The first observations on cloud microphysics were made a long time ago. Beginning around 1840 in Europe and America, scientific ascents on balloons for the first time allowed us to get some idea about the internal structure of clouds, about their constituent solid and liquid particles, and about the movement in their thickness. Thus, Flammarion and Godard in 1868 described the rapid development of Cumulus clouds in the daytime at a speed exceeding the speed of the balloon ascent, and their subsidence in the evening. On a hot day in August 1689 in Dijon ( France), Tissandier discovered that" a thunderstorm attracts a balloon", i.e., a balloon. it is connected with the area of convergence of the exercises – the area of low pressure, and in February 1873. he observed a cloud consisting of "diamond spangles", however, covered with drops of frozen water, as well as a deep (up to 19 C) inversion of temperature over the cloud layer. Balloon observations have disproved, in particular, the old hypothesis of microscopic bubbles that supposedly make up clouds, which dates back to geerica. Note that a new stage in the development of cloud physics, which began around 1941-1945, was also associated with a series of special scientific balloon ascents in the USSR, which we will discuss below.

It should be noted that due to the progress in the study of thermodynamics of the atmosphere in the mid-nineteenth century it became apparent humidity adiabatic processes, in particular cooling air during its rise, on which Fourier and Poisson had already noticed in 1822-1823гг. In 1843г. Inferno noticed that the observed rise in the temperature gradient in bschem much less adiabatic. In 1864-1865, Kelvin and van Reye (France) studied the characteristics of a wet-adiabatic process associated with condensation of water vapor. Somewhat later, in 1842, Reye considered this process, considering it in the development of the theory of cyclones – so these authors associated the wet-adiabatic process with the development of the largest perturbations of the atmosphere. Soon, the first adiabatic graphs were proposed for describing adiabatic processes – Hertz and Neygorof, which took into account their differences in the formation of the liquid and ice phases. A little earlier, Kelvin and then Helmholtz described the process of creating air waves that cause the formation of wavy clouds. The experience of global study of all cloud forms, their distribution and movement was acquired during the International cloud year (1896-1897). This experiment was attended by experts from 12 countries, including Russia.

Returning to the problem of microphysics of clouds, we note that the idea of the value of ice crystals for the formation of precipitation was put forward in 1866 by Renou in France. Its thermodynamic justification was first proposed in 1911 by A. Wegener, who proved that "recodensation" - the transfer of steam from supercooled drops to crystals – is an important process in the formation of large precipitation particles. The theory of the origin of precipitation particles has thus received a solid Foundation. In the future, Begeron introduced the concept of "colloidal instability of clouds", or, more accurately, "phase instability".

The macrophysics of clouds was completely reconstructed after the discovery and description of atmospheric fronts and their cloud systems in the works of V. Bjerknes and J. Bjerknes in 1916-1919. The frontal "mechanism" was responsible for the formation of most forms of clouds, and the condensation heat released in the clouds is one of the main sources of energy for the atmosphere.