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 type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...
A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...