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High Resolution Solid State Doppler Lidar (HRDL)
Applications:
- High spatial temporal and velocity resolution wind profiles
- Boundary layer turbulence and entrainment zone studies
- Flux measurements
- LES model initialization and validation
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- Temporally and spatially averaged measurements of divergence
- Dual Doppler (future)
- Water vapor DIAL (future)
- Multi-platform operations: land, sea and (future) air
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Field Projects:
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May 2001 | |
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April/May 2000 |
Bahamas |
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October 1999 |
Leon, Kansas |
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June/July 1999 |
tropical Western Pacific |
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January 1999 | Huntsville, Alabama |
- LIFT (Lidars In Flat Terrain)
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August 1996 | Champain/Urbana, Illinois |
- MBLEX (Marine Boundary Layer
Experiment)
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April/May 1995 | Pacific Ocean, off
Monterrey, California |
Basic Parameters Measured:
- Range resolved velocity profiles
- Range resolved backscatter intensity
Typical Specifications
| Wavelength
| 2.0218 µm (Fully eye-safe) |
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| Pulse energy
| 1.5 mJ |
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| Pulse rate |
200 Hz |
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| Frequency stability |
0.2 MHz |
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| Scan |
Upper hemisphere |
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| Resolution |
Range |
Time |
Velocity |
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| 30 m |
0.02 s (for 10 pulse average) |
5 cm/s |
| Minimum range |
0.2 km |
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| Maximum range |
2 - 9 km (typically 3 km) |
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| Accuracy |
Not yet established |
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| Comments |
- Environmental container for ship deployment
- Aircraft operation feasible
- Unique Tm:Lu,YAG diode-pumped, injection-seeded laser transmitter
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References
Grund, C.J., R.M. Banta, J.L. George, J.N. Howell, M.J. Post, R.A. Richter,
A.M. Weickmann, 2001:
High-Resolution Doppler Lidar for Boundary Layer and Cloud Research.
J. Atmos. Oceanic Tech., 18, 376-393.
Wulfmeyer, V., A. Brewer, A. Weickmann, R. Richter, J. Vanandel, J. Howell,
C. Grund, M. Hardesty, and P. Hildebrand, "NCAR/NOAA
high-resolution Doppler lidar for wind measurements and its potential for
water-vapor differential absorption lidar." Book of Abstracts, Vol. 2,
Fourth International Symposium on Tropospheric Profiling, Snowmass,
Colorado, September 1998, 341-343, 1998.
Wulfmeyer, V., W.A. Brewer, C. Senff, S. Mayor, R. Marchbanks, J. Howell,
A. Weickmann, R. Richter, C. Grund, and R.M. Hardesty, "Performance and
applications of the NOAA 2um High Resolution Doppler Lidar."
NASA/CP--1998--207671/PT1, 19th International Laser Radar Conference,
Annapolis, Maryland, July 1998, 573-576, 1998.
Grund, C.J., "Coherent Doppler Lidar for Boundary Layer Wind
Measurement Employing a Diode-pumped Tm:Lu,YAG Laser," Coherent Laser
Radar, 19, 1995 OSA Technical Digest Series, Optical Society of America,
Washington, DC, 1995, 14 - 16.
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