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 cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
A large body of air having similar horizontal temperature and moisture characteristics.
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...
A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...
An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....