Dark blue cloudy sky

What is Orographic Lift?

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

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Glossary

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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

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

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

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

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

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

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...