The Open-Path Ammonia Laser Spectrometer (OPALS) is an in situ airborne spectrometer developed by Princeton University. It is a quantum cascade laser-based spectrometer that detects ammonia (NH3) at the 9.06 μm wavelength. It can measure a wide range of NH3 mixing ratios and offers improved capabilities for emission source characterization and flux measurements. OPALS has a precision of 0.15 ppbv, an accuracy of 10%, and a time resolution of 10 Hz.
Instrument Details
- Spectrometer/Radiometer
- Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Ammonia
- Troposphere
- 10 Hz
- Point
- 33.1 THz
- https://doi.org/10.5194/amt-7-81-2014
Mark Zondlo
Mark Zondlo
Princeton University
NSF
Unpublished
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