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 reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...
An instrument for measuring atmospheric pressure.
A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...