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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Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...
The branch of science dealing with the laws of motion of air or other gases.
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.
Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...