What does barogram mean?
A barogram is a recording instrument used to track changes in atmospheric pressure over time. Unlike a barometer, whose main purpose is to indicate the pressure at a particular moment, a barogram produces a continuous visual record, often a line drawn on a moving chart. The word is mainly used in meteorology and historical weather observation, where such records can help scientists examine pressure trends, identify the approach of a weather system, or reconstruct past conditions. It belongs to the same scientific vocabulary as barograph, barometer, and barography. Although largely replaced by electronic instruments in routine observation, barograms remain important in archives, historical climate research, and the history of meteorology.
nounA barogram is an instrument that continuously records changes in atmospheric pressure, usually as a trace on a chart. It is a specialized meteorological device associated with the barograph.
- An instrument that records variations in atmospheric pressure.
"The meteorologist studied the barogram to determine when the storm's pressure began to fall."
"The barogram showed a steady decline in pressure throughout the night."
"Researchers used archived barograms to reconstruct the weather conditions before the expedition."
The plural is used when referring to more than one barogram or to a collection of recorded traces.
"The archive contains barograms from coastal stations around the world."
A barogram turns the invisible movement of atmospheric pressure into a trace that meteorologists can read.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does barogram come from?
Barogram was formed in the 19th century within the developing scientific vocabulary of meteorology. Its baro- element derives from Greek baros, meaning “weight” or “heaviness,” and is also associated with barometric pressure, while -gram comes from Greek gramma, meaning a written or drawn character. The compound therefore refers to a written or traced record of pressure.
Related word forms
How barogram is actually used
Barogram is a technical meteorological term rather than everyday vocabulary. It is closely associated with barograph, which is often used in the same historical and scientific contexts.
Easily confused with barogram
A barometer measures atmospheric pressure, whereas a barogram continuously records pressure changes over time.