What is Arctic Air?
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
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The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...
Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....