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 condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...
Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
A large body of air having similar horizontal temperature and moisture characteristics.
A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...