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:
“It seemed like this was one big Prozac nation, one big mess of malaise. Perhaps the next time half a million people gather for a protest march on the White House green it will not be for abortion rights or gay liberation, but because we’re all so bummed out.”
—Elizabeth Wurtzel, U.S. author. Prozac Nation: Young and Depressed in America, p. 298, Houghton Mifflin (1994)
“We must have more money, that’s all there is to it. There must be more money.”
—Anthony Pélissier. The constant complaint of the spendthrift Mrs. Grahame (1949)