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 weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...