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 low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...
The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...