Dark blue cloudy sky

What is Trough?

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms and rain.

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Glossary

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

A large body of air having similar horizontal temperature and moisture characteristics.

A very cold high pressure that originates over the Arctic Ocean.

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

An instrument for measuring atmospheric pressure.

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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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