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What is Black Ice?

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt due to its transparency, thus posing a danger to drivers.

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Glossary

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

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

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

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

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

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...