Our trace gas instruments are optimized for flight and feature fast time responses ideal for high-quality airborne measurements (0.5 Hz to 10 Hz, depending on the species and mode of operation). The instruments installed in our non-pressurized cabin sample atmospheric air through four rear-facing inlets located under the wing. In addition to trace gases, wind speed and direction (on-board avionics system), temperature and humidity (Vaisala probe), and 3-dimensional location and time (Hemisphere differential GPS) are measured. Data is conveniently collected and displayed on-board the aircraft in real-time through an integrated data acquisition system, and can be viewed from the ground via our Flight Tracker feature.
We will also work with you to integrate additional project-specific measurements using your instrumentation, depending on weight, safety, and power draw requirements.
Scientific Aviation instrument inventory:
- Picarro wavelength-scanned cavity ring-down spectrometer (WS-CRDS)
We have two Picarro models available which measure either CH4, CO2, H2O (3-species), or CH4, CO2, H2O, C2H6 (4-species), with a time response of ~0.5 Hz when operated under typical conditions. In fast-flux mode, response rates of 10 Hz can be achieved by eliminating one of the species measured.
Read more about the Picarro here.
- Aerodyne tunable infrared laser absorption spectrometer (TILDAS)
Our Aerodyne spectrometer measures ethane (C2H6 )with high accuracy at a 1 Hz response rate.
Read more about the Aerodyne TILDAS here.
- Aerodyne cavity attenuated phase shift (CAPS) monitor
The CAPS monitor measures nitrogen dioxide (NO2), and features an internal NO2 scrubber- meaning no external cylinders of NO2-free air are required for baseline measurements (saving you weight and space on the aircraft!).
- 2B Ozone (O3) Monitor
Two ozone monitors report either 0.5 Hz (Model 205) or 0.1 Hz (Model 202) data, and can be regularly calibrated in the field against our portable 2B Ozone Calibration Source.
Read more about the ozone monitors here.