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.
Glossary
A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.
A large body of air having similar horizontal temperature and moisture characteristics.
The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.
Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...
Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...
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