Mini-MOPA CO2 Doppler Lidar
![example Mini-MOPA data image](images/mopa_dat1.jpg)
Example Mini-MOPA data
.![Mini-MOPA instrument trailer](images/mopa.png)
The Mini-MOPA lidar is housed in a mobile laboratory constructed from a modified sea-going cargo container.
Applications
- Boundary Layer Studies
- Wind profiles
- Turbulence and momentum flux measurements
- Profiles and flux measurements of water vapor and ozone (under development)
- Dual Doppler (future)
- Cloud Studies
- Cloud geometry
- Cloud microphysical parameters (particle size and concentration)
Basic Parameters Measured
- Range resolved radial velocity
- Range resolved backscatter intensity
- Dual wavelength differential absorption or backscatter (under development)
Field Projects
NEAQS (New England Air Quality Study) | July/August 2002 | New Hampshire |
EPIC (Eastern Pacific Investigation of Climage) | September/October 2001 | Tropical Eastern Pacific |
GroundWinds | September 2000 | New Hampshire |
Ammonia DIAL Measurements | March-May 2000 | Boulder, Colorado |
SOS 99 (Southern Oxidants Study) | June/July 1999 | Nashville, Tennsessee |
Table Mountain Doppler Experiment | Nov. 1998 - Jan. 1999 | Boulder, Colorado |
CART (Cloud and Radiation Testbed)/ARM (Atmospheric Radiation Measurement) | April 1996 | Ponca City, Oklahoma |
Typical Specifications
Wavelength | 9.2 - 11.3 µm line tunable (fully eye-safe) |
Pulse energy | 2 mJ |
Pulse rate | < 300 Hz |
Pulse length | 0.5 - 10 µs |
Wavelength switching rate | < 50 Hz |
Scan | Upper hemisphere |
Range Resolution | > 60 m |
Time Resolution | 0.3 sec (100 pulse avg.) |
Minimum range | 90 m |
Maximum range | 5 - 12 km |
Velocity accuracy | > 5 cm s-1 |
Comments |
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Contact: Alan Brewer
References
Zhao, Y., "Line-pair selections for remote sensing of atmospheric ammonia by use of a coherent CO2 differential absorption lidar system." Applied Optics, 39(6):997-1007, 2000.
Brewer, W.A., and R.M. Hardesty, "Development of a dual-wavelength CO2 mini-MOPA Doppler lidar." OSA Coherent Laser Radar, Keystone, Colorado, 293-296, 1995.
Pearson, G.N., and B.J. Rye, "A high-pulse-repetition-frequency CO2 Doppler lidar for atmospheric monitoring." Rev. Sci. Instrum., 64, 1155-1157, 1993.