Oblaka

25/02/2023

A beautiful Cape Robin-chat (Dessonornis caffer) on a cold day in South Africa
Photo by Victor De Sousa‎.

25/02/2023

They are observed in the upper troposphere, sometimes at the heights of the tropopause or directly below it (in the middle latitudes, their bases most often lie at altitudes of 6-8 km, in the tropics from 6 to 18 km, in the polar ones from 3 to 8 km above sea level). Visibility within the cloud is 150-500 m.

25/02/2023

Cirrus clouds (Victoria, Australia)
They consist of separate pinnate elements in the form of thin white threads or white (or mostly white) tufts and elongated ridges. They have a fibrous structure and / or a silky sheen.

24/02/2023

The beautiful California Quail (Callipepla californica)
Photo: Adam Skalzub ()

24/02/2023

On their crests, the rising air cools adiabatically - as a result of which clouds form in the form of shafts and ridges. In the hollows of the waves, the air descends, heats up adiabatically and, consequently, moves away from the state of saturation of water v***r, as a result of which gaps of the blue sky are formed.

24/02/2023

Wavy clouds form in anticyclones during inversions, when the lower boundary of the inversion coincides with the level of condensation. At the boundary between warm, less dense (top) and cold, denser (bottom) air, air waves develop during movement.

22/02/2023

22/02/2023

In a broad sense, a cloud is a collection of individual particles of a substance in a certain volume.

22/02/2023

Clouds are products of water v***r condensation suspended in the atmosphere, visible in the sky with the naked eye from the surface of the Earth and near-Earth space.

21/02/2023

In a broad sense, a cloud is a collection of individual particles of a substance in a certain volume.
Clouds are made up of tiny droplets of liquid water and/or water ice crystals called cloud elements.