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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Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...
Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...