What is Circulation?

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

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

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...

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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...