Atmospheric Remote Sensing: Instruments
Airborne Excimer Ozone Differential Absorption Lidar (ABDIAL)
ABDIAL installed on DC-3 aircraft.
Decommissioned
Introduction to Differential Absorption Lidar (DIAL) techniques.
Research applications include:
- Airborne mapping of lower tropospheric ozone and aerosol distributions
- Air pollutant plume and air mass dispersion studies
- Ozone non-attainment studies
Contact: Christoph Senff
Basic Parameters Measured
- Ozone concentration profiles
- Aerosol backscatter
Field Projects
| Project Name | Date | Location |
|---|---|---|
| New England Air Quality Study (NEAQS) 2004 | June-August 2004 | New Hampshire |
| New England Air Quality Study (NEAQS) | July-August 2002 | New Hampshire |
| Southern Oxidants Study (SOS) | 1995 | Tennessee Valley |
Typical Specifications
| Wavelengths | 277, 292, 313, 319, 360 nm | ||
| Pulse energy | 5 - 15 mJ / wavelength | ||
| Pulse rate | 20 Hz | ||
| Scan | Fixed, down-looking from an airborne platform | ||
| Resolution | 90 m (ozone) | 15 m (aerosol backscatter) | |
| Minimum range | 0.7 km | ||
| Maximum range | 3.5 km | ||
| Accuracy | Less than 10 ppbv typical | ||
| Platform | Casa 212 cargo aircraft | ||
| Laser Type | Krypton Fluoride with Raman shifting in H2 and D2 | ||
| Receiver | 50 cm diameter Newtonian telescope (down-looking) | ||
| Detectors | Hamamatsu R2055 and R2076 PMT's, gated | ||
| A-to-D converters | DSP 12-bit 5 MS/s (ozone), 10 MS/s | ||
References
Alvarez II, R.J., R.M. Hardesty, C.J. Senff, D.D. Parrish, W.T. Luke, T.B. Watson, and P. H. Daum, Intercomparison between in situ and lidar measurements of ozone during the 1995 Southern Oxidants Study, AGU Fall Meeting, F96, San Francisco, California, 15-19 December 1996.