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NASA Langley Research Center (LaRC) developed a double pulsed, high energy 2-micron Integrated Path Differential Absorption (IPDA) lidar instrument to measure atmospheric CO 2  column density. The 2-μm double pulsed IPDA lidar was flown ten times in March and April of 2014. It was determined that the IPDA lidar measurement is in good agreement with an in-situ CO 2  measurement by a collocated NOAA flight. The average column CO 2  density difference between the IPDA lidar measurements and the NOAA air samples is 1.48ppm in the flight altitudes of 3 to 6.1 km.

Flight Demonstration of a 2-Micron, Double Plused CO2 IPDA Lidar Instrument

Flight Demonstration of a 2-Micron, Double Plused CO₂ IPDA Lidar Instrument