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 have no time to read newspapers. If you chance to live and move and have your being in that thin stratum in which the events which make the news transpire—thinner than the paper on which it is printed—then these things will fill the world for you; but if you soar above or dive below that plane, you cannot remember nor be reminded of them.”
—Henry David Thoreau (1817–1862)
“It is pretty obvious that the debasement of the human mind caused by a constant flow of fraudulent advertising is no trivial thing. There is more than one way to conquer a country.”
—Raymond Chandler (1888–1959)