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 percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
The amount of water vapor present in the air, which can affect comfort levels and weather conditions.
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...
The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...