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 weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...
Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...
The branch of science dealing with the laws of motion of air or other gases.
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...