RESEARCH ASSOCIATES: Dr. Albert Ansmann, Kathleen Franke, Dr. Detlef Müller

MAILING ADDRESS: Institute for Tropospheric Research
Permoserstr. 15
04318 Leipzig
Germany

TELEPHONE NUMBER: ++49 341 235 2460

FAX NUMBER: ++49 341 235 2361

E-MAIL ADDRESS: dietrich@tropos.de

WEB SITE: http://www.tropos.de

DATE: 30 August 2001

LIDAR LOCATION (CITY, COUNTRY, LAT., LONG.): Leipzig, Germany, 51°21' N, 12°26' E, transportable

SITE ELEVATION: 90m asl, transportable

PARAMETER(S) OR CONSTITUENT(S) MEASURED:
· Particle backscatter coef. at 355, 400, 532, 710, 800, 1064 nm
· Particle extinction coef. at 355, 532 nm
· Depolarization ratio at 710 nm
· Water vapor mixing ratio
· Retrieval of particle physical properties from optical properties

RESEARCH OBJECTIVES AND SPONSOR:
Measurements at field sites for atmospheric particle characterization.
Institute for Tropospheric Research, European Commission, and Deutsche Forschungsgemeinschaft.

MEASUREMENT TECHNIQUE: measurement of elastic and inelastic (Raman) signals, scanning technique

MEASUREMENT RANGE: 0 - 40 km

VERTICAL RESOLUTION: 15 ... 60 m

FREQ. OF MEASUREMENT (TYPICALLY): 1 field campaign per year

MEASUREMENT TIMES (TYPICALLY): at field sites almost every day, several times per day

LASER TYPE AND WAVELENGTH (s): Nd:YAG (355, 532, 1064 nm), Ti:Sapphire Laser (710, 800, 400 nm)

LASER ENERGY/PULSE: 2 x Nd:YAG; each 1.1 J (1064 nm)

PULSE REPETITION RATE: 30 Hz

RECEIVER SIZE AND CONFIGURATION: 530-mm Cassegrain telescope

DETECTORS USED: THORN EMI and Hamamatsu

SIGNAL PROCESSING: 6 analog channels and 5 photon counting channels

ANALOG-T0-DIGITAL CONVERTER: Intelligent Instrumentation ZPD 1002, Burr Brown ADC 603, 12 bit, 10 MHz

COMPUTER: PC

PLATFORM (if applicable): ground based, transportable (seatainer)

PUBLICATIONS (5 recent and/or significant):
(1) Althausen, Dietrich, Detlef Müller, Albert Ansmann, Ulla Wandinger, Helgard Hube, Ernst Clauder, and Steffen Zörner (2000), "Scanning 6-Wavelength 11-Channel Aerosol Lidar," J. Atmos. Ocean. Tech., 17(11), 1469-1482.

(2) Müller, Detlef, Frank Wagner, Ulla Wandinger, Albert Ansmann, Manfred Wendisch, Dietrich Althausen, and Wolfgang von Hoyningen-Huene (2000), "Microphysical Particle Parameters from Extinction and Backscatter Lidar Data by Inversion with Regularization: Experiment," Appl. Optics 39(12), 1879-1892.

(3) Ansmann, Albert, Dietrich Althausen, Ulla Wandinger, Kathleen Franke, Detlef Müller, Frank Wagner, and Jost Heintzenberg (2000), "Vertical profiling of the Indian aerosol plume with six-wavelength lidar during INDOEX: A first case study," Geophys. Res. Lett. 27(7), 963-966.

(4) Müller, D., F. Wagner, D. Althausen,. U. Wandinger, and A. Ansmann (2000), "Physical properties and radiative impact of Indian aerosol plume derived from 6-wavelength lidar observations on 25 March 1999 of Indian Ocean," Geophys. Res. Letts. 27, 1403-1406.

(5) Althausen, Dietrich, Kathleen Franke, and Ge Verver (2000), "Correlation Between Particle Backscatter Measured over the Tropical Indian Ocean and Residence Time of the Observed Aerosols in the Boundary Layer over the Asian Continent," in Alain Dabas, Claude Loth and Jacques Pelon (Eds.): Advances In Laser Remote Sensing (Selected Papers presented at the 20th International Laser Radar Conference (ILRC), Vichy, France, 10 - 14 July 2000, 187-190.