What is Circulation?

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic conditions.

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Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...