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:
“The chuck wagon carries the food and utensils for the range kitchen. Man-at-the-pot is the first buckaroo to pick up the coffee pot when out with the chuck wagons. It becomes his duty to pour the coffee for the outfit. “Come and get her before I throw her out” is the time honored mess call.”
—Administration in the State of Neva, U.S. public relief program (1935-1943)
“The tears of the world are a constant quality. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.”
—Samuel Beckett (1906–1989)