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
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...
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