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 cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

An instrument for measuring atmospheric pressure.

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

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

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

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

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

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

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...