10.5065/D69P2ZQC
Wofsy, Steven
Harvard University
UCAR/NCAR - Earth Observing Laboratory
Quantum Cascade Laser Spectrometer for HIAPER
UCAR/NCAR - Earth Observing Laboratory
2009
Airborne Sensor
University Corporation For Atmospheric Research (UCAR):National Center for Atmospheric Research (NCAR):Earth Observing Laboratory (EOL):Research Aviation Facility (RAF)
Wofsy, Steven
Harvard University
2009
This service is available to be used subject to the University Corporation for Atmospheric Research ("UCAR") terms and conditions.
There are two separate components to this instrument, both using quantum-cascade tunable infrared laser differential absorption spectroscopy. One module measures CO2 with an accuracy of 0.1 ppm and a time response of one second. The second measures CO, CH4, and N2O, also with the response time of one second. The two instruments share a single aircraft rack. The instrument uses an infrared tunable quantum cascade laser. Detection is via a compact long-path cell. Two lasers are configured to measure CO, CH4, and N2O, at 1 Hz frequency and with very high precision (better than 0.5, 1.0, and 0.1 ppb Hz-1/2, respectively). A second short-path cell of a new design provides high-precision CO2 measurements (better than 0.1 ppm Hz-1/2 ) using a third QC-laser.
Boulder, Colorado USA
The US National Science Foundation