ICLAS: International Coordination-group on Laser Atmospheric Studies
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LIDAR RESEARCHER:
Dr. Alain M. DABAS
Dr. Christian WERNER

RESEARCH ASSOCIATES:
P. Flamant (CNRS), P. Drobinski (CNRS)
C. Werner (DLR), O. Reitebuch (DLR).

MAILING ADDRESS:
Alain DABAS
Météo-France
CNRM/GMEI/LISA
42 avenue Gustave Coriolis
31500 Toulouse, FRANCE

Christian WERNER
DLR-Institut of Atmospheric Physics
P.O.Box 1116
D-82230 Wessling
Germany

TELEPHONE NUMBER:
33-561 07 96 03 49-8153 282573

FAX NUMBER:
33-561 07 96 27 49 8153 281608

E-MAIL ADDRESS:
alain.dabas@meteo.fr Christian.Werner@dlr.de

WEB SITE:
http://lmdx.polytechnique.fr/~Lidar/ http://www.op.dlr.de/ipa/LIDAR/WIND/

DATE:
Operational since mid-1999.

LIDAR LOCATION :
Airborne Doppler Lidar.

SITE ELEVATION:
Not an issue.

PARAMETER(S) OR CONSTITUENT(S) MEASURED:
Wind, reflectivity

RESEARCH OBJECTIVES AND SPONSOR:
Subject: Atmospheric Dynamics.
Sponsor(s) :
IN FRANCE:
Centre National de la Recherche Scientifique (National Center for Scientific Research), Centre National d'Etudes Spatiales (National Center for Space Studies).
IN GERMANY:
Deutsches Zentrum für Luft- und Raumfahrt (Aerospace German Center).

MEASUREMENT TECHNIQUE:
Coherent Doppler lidar operating at 10.6µm with a line-of-sight transmitted downward through a bottom window. The LOS is inclined 30° from nadir and rotated around the vertical axis.

MEASUREMENT RANGE:
Measurement from the surface up to the flight altitude (max 11km)

VERTICAL RESOLUTION:
250m

FREQ. OF MEASUREMENT (TYPICALLY):
Irregular

MEASUREMENT TIMES (TYPICALLY):
3 hours

LASER TYPE AND WAVELENGTH (s):
Single longitudinal mode CO2 laser at 10.6µm.

LASER ENERGY/PULSE:
100 - 300 mJ

PULSE REPETITION RATE:
10 Hz

RECEIVER SIZE AND CONFIGURATION:
Diameter 20cm, Dall Kirkham, off axis.

DETECTORS USED:
2 MCT detectors

SIGNAL PROCESSING:
Retrieval of radial winds (level 1 data) and wind vectors (level 2 data).

ANALOG-T0-DIGITAL CONVERTER:
8 bits, 200 Msps

COMPUTER:
Apple MacIntosh G3

PLATFORM (if applicable):
Falcon 20

PUBLICATIONS (5 recent and/or significant):
1. Werner C., P.H. Flamant, O. Reitebuch, C. Loth, F. Köpp, P. Delville, J. Streicher, P. Drobinski, S. Rahm, B. Romand, E. Nagel, C. Boitel, M. Kleir, D. Bruneau, H. Herrmann, A. Dabas, 2001 : WIND Instrument. Optical Engineering, 40, 115-125, 2001.

2. Reitebuch O., Ch. Werner, I. Leike, P. Delville, P. H. Flamant, A. Cress, D. Engelbart, 2001 : Experimental validation of wind profiling performed by the airborne 10µm-Heterodyne Doppler Lidar WIND. Journal of Atmospheric and Oceanic Technology, in print.

COMMENTS:
The airborne Doppler lidar WIND has been developed in the frame of a cooperation between France and Germany. In France, the project was supported by CNRS (Laboratoire de Météorologie Dynamique) and CNES. In Germany, it was supported by the Insitute of Atmsopheric Physics of the Deutsches Zentrum für Luft- und Raumfahr (DLR). The Principal Investigators are C. Werner (DLR) and A. Dabas (Météo-France/CNRS)

 
 

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