What is Clear?
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility. Clear sky. In meteorology, this term is also used when the cloud cover is less than 1/8 during the day or at the observation hour.
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The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...
Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...