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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A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...