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 militancy of men, through all the centuries, has drenched the world with blood, and for these deeds of horror and destruction men have been rewarded with monuments, with great songs and epics. The militancy of women has harmed no human life save the lives of those who fought the battle of righteousness. Time alone will reveal what reward will be allotted to women.”
—Emmeline Pankhurst (1858–1928)
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—Alfred Jarry (1873–1907)