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 cloud of irregular appearance, composed of irregular cloud fragments.

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

Perhaps you have come across them, maybe you are seeing them for the first time. These clouds, known as wave clouds, resemble...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

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