What is Arctic Air?

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

A cloud of irregular appearance, composed of irregular cloud fragments.