A time constant is the amount of time it takes for a meteorological sensor to respond to a rapid change in a measurand until it is measuring values within the accuracy tolerance usually expected of the sensor.
This most often applies to measurements of temperature, dewpoint temperature, humidity and air pressure. Radiosondes are especially affected due to their rapid increase in altitude.
Famous quotes containing the words time and/or constant:
“I’ll so offend to make offence a skill,
Redeeming time when men least think I will.”
—William Shakespeare (1564–1616)
“The Mind that lies fallow but a single Day, sprouts up in Follies that are only to be killed by a constant and assiduous Culture.”
—Joseph Addison (1672–1719)
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