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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An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...
The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...
The amount of water vapor present in the air, which can affect comfort levels and weather conditions.
The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...