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 turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...