Dark blue cloudy sky

What is Aeroallergens?

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

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Glossary

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

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

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...