Calibrating Laser Gas Measurements by Use of Natural CO2
TBMG-29367
01/01/2003
- Content
An improved method of calibration has been devised for instruments that utilize tunable lasers to measure the absorption spectra of atmospheric gases in order to determine the relative abundances of the gases. In this method, CO2 in the atmosphere is used as a natural calibration standard. Unlike in one prior calibration method, it is not necessary to perform calibration measurements in advance of use of the instrument and to risk deterioration of accuracy with time during use. Unlike in another prior calibration method, it is not necessary to include a calibration gas standard (and the attendant additional hardware) in the instrument and to interrupt the acquisition of atmospheric data to perform calibration measurements.
- Citation
- "Calibrating Laser Gas Measurements by Use of Natural CO2," Mobility Engineering, January 1, 2003.