What is Baroclinicity?
A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces of constant pressure intersect with surfaces of constant temperature.
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The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.
A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...