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 polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...
A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...
A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.