Dark blue cloudy sky

What is Barograph?

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates a visual record on a paper chart.

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Glossary

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

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

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

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

Snow that rises to 8 feet or higher.

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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

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

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...