1. Doppler Lidar Measurements at DLR
Coherent 2 mm
Doppler Lidar Measurements
at DLR
S. Rahm
R. Simmet, I. Smalikho, M. Wirth
Institut für Physik der Atmosphäre, DLR
Airborne Wind Profile Measurements 2001
Ground Based Wake Vortex Measurements Tarbes (France) 2002
Airborne Wind Profile Measurements during Vertikator Campaign 2002
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

2. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
2 mm Lidar System
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

3. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Airborne Konfiguration
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

4. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
2 mm Lidar System Installed in Falcon
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

5. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

6. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

7. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Mediteranean Sea 18/07/2002
Alpine Area
Windprofile at
7° 6` E; 44° 42` N
40 km SW of Turin
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

8. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Mediteranean Sea 18/07/2002; Boundary Layer at Sardinia
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

9. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

10. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

11. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Comparison Dropsonde <-> Lidar
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

12. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

13. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

14. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Adria 18/07/2002
Windprofile at
Vicenza (near Verona)
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

15. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Adria 18/07/2002
Windprofile at
Vicenza (near Verona)
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

16. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

17. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

18. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

19. Strategy of lidar measurements at Tarbes airport
Quinetic + Onera 10 mm cw
DLR 2 mm pulsed
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

20. Wake vortex measurement at Tarbes airport.
Quicklook sequence of 91 minutes
400
800
1200
100
200
300
500
Range
Altitude
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

21. Wake vortex measurement at Tarbes airport.
Quicklook sequence of 91 minutes
400
800
1200
100
200
300
500
Range
Altitude
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

22. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Spectra at wake vortex
measurements 1
range gate 2 3
Velocity [m/s]
Lidar
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

23. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
WakeTarbes 2002: Signatures of A340 wake vortices
config. 1, 56 s after OF at 338 m altitude
Z [m]
100
200
starboard
vortex
velocity [m/s] 13 5 10
400
600
X [m]
100
200
300
1200
800
1000
Z [m]
pos. envelope [m/s]
neg. envelope [m/s]
400
100
200
300
1200
600
800
1000
Z [m]
X [m] -2
-12 -8 -4
Z [m]
100
200
-10 10
velocity [m/s]
port
vortex
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

24. Results of a VLTA - wake vortex measurement:
trajektory, zirkulation, core separation and tilt
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003

25. Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003
Conclusion
Wind profiles obtained airborne from 5000 m altitude down to ground.
Wake vortices can be detected and characterised in the boundary layer.
Higher energy would be welcome e.g. 10 mJ !?!
Working Group on Space-Based Lidar Winds; Oxnard Feb. 2003