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:
“An old French sentence says, “God works in moments,”M”En peu d’heure Dieu labeure.” We ask for long life, but ‘t is deep life, or grand moments, that signify. Let the measure of time be spiritual, not mechanical.”
—Ralph Waldo Emerson (1803–1882)
“Our kindred, though they be long ere they be wooed, they are constant being won; they are burrs, I can tell you, they’ll stick where they are thrown.”
—William Shakespeare (1564–1616)