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 heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...
A very cold high pressure that originates over the Arctic Ocean.
Weather intelligence is technology that provides predictive and actionable insights, allowing businesses to adapt to weather-related...
Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...