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 situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...
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A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...
A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.