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 continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
An instrument for measuring atmospheric pressure.
The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...
The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
A cloud of irregular appearance, composed of irregular cloud fragments.
Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...