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 term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...