RESEARCH ASSOCIATES: Dr. Horst Jäger (retired), Helmut Giehl

MAILING ADDRESS: Kreuzeckbahnstr. 19, D-82467 Garmisch-Partenkirchen, Germany

TELEPHONE NUMBER: (+49)-8821-183-209

FAX NUMBER: (+49)-8821-73573

E-MAIL ADDRESS: trickl@ifu.fhg.de

WEB SITE: http://www.ifu.fhg.de

DATE: August 13, 2001

LIDAR LOCATION (CITY, COUNTRY, LAT., LONG.): Garmisch-Partenkirchen, Germany, 47.5 N, 11.0 E

SITE ELEVATION: 730 m a.s.l.

PARAMETER(S) OR CONSTITUENT(S) MEASURED: Aerosol

RESEARCH OBJECTIVES AND SPONSOR: Long-term investigation of aerosol in the stratosphere and in the free troposphere; investigations of optical, physical and microphysical characteristics of contrails and clouds; sponsor: German Bundesministe-rium für Bildung, Forschung und Technologie, European Union

MEASUREMENT TECHNIQUE: backscatter lidar

MEASUREMENT RANGE: 3 to 40 km a.s.l. vertical (also slant-path capability)

VERTICAL RESOLUTION: typ. 75 m

FREQ. OF MEASUREMENT (TYPICALLY): 1 measurement per week

MEASUREMENT TIMES (TYPICALLY): night

LASER TYPE AND WAVELENGTH (s): Nd:YAG and harmonics, mostly 532 nm

LASER ENERGY/PULSE: 1.2 J

PULSE REPETITION RATE: 10 Hz

RECEIVER SIZE AND CONFIGURATION: 520 mm Cassegrain

DETECTORS USED: EMI 9128 PMT

SIGNAL PROCESSING: Photon counting (FAST ComTec), 12 bit/40 MHz transient digitizer for special measurements (e.g., contrails)

ANALOG-T0-DIGITAL CONVERTER: 12 bit/40 MHz (FAST ComTec)

COMPUTER: PC

PLATFORM (if applicable): Container

PUBLICATIONS (5 recent and/or significant):

H. Jäger, R. Mücke, J. Harris, The stratospheric aerosol layer after the decay of the Pinatubo Perturbation, in Air pollution research report 73: Stratospheric ozone 1999, pp 87-90, European Commission, 2000.

C.-H. Lu, G.K. Yue, G.L. Manney, H. Jäger, V.A. Mohnen, Lagrangian approach for stratospheric aerosol and gas experiment (SAGE) II profile intercomparisons, J. Geophys. Res. 105, 4563-4572, 2000.

H. Jäger, V. Freudenthaler, F. Homburg, Remote sensing of optical depth of aerosols and clouds related to air traffic, Atmos. Environment, 32, 3123-3127, 1998.

H. Jäger, T. Deshler, F. Homburg, V. Freudenthaler, Five years of lidar observations of the Pinatubo eruption cloud, in Advances in Atmospheric Remote Sensing with Lidar, pp 485-488, Springer Berlin Heidelberg, 1997.

H. Jäger, T. Deshler, D.J. Hofmann, Midlatitude lidar backscatter conversions based on balloonborne aerosol measurements, Geophys. Res. Lett., 22, 1729-1732, 1995.

COMMENTS: Computer-controlled angular scanning 0-90° in elevation, ±90° in azimuth