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

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

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

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

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

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

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