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 mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...
A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...
A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.
A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...
A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...