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 measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
An instrument for measuring atmospheric pressure.
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Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
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A cloud of irregular appearance, composed of irregular cloud fragments.
A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...