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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The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...
A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...