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Proceedings Paper

Tropospheric water-vapor profiling using an airborne DIAL system: results from the EFEDA '91 experiment
Author(s): Christoph Kiemle; Gerhard Ehret; Wolfgang Renger
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Paper Abstract

An airborne near infrared differential absorption lidar (DIAL) has been completed for meteorological applications. This system is based on a Nd:YAG pumped narrow-band tunable dye laser for both the on- and off-line measurements. Performing H2O measurements within and above the planetary boundary layer (PBL) up to an altitude of 4 km, it successfully participated in the European Field Experiment on Desertification Threatened Areas (EFEDA '91) conducted in Spain in the summer of 1991. Data processing of the lidar signals provides range resolved horizontal and vertical water vapor profiles, horizontal power spectra of turbulence, and aerosol backscattering profiles. Water vapor profiles are being calculated using gliding averages of single lidar returns. Typical horizontal resolutions range from 1.3 to 3 km with vertical resolutions varying from 300 to 600 m, depending on the signal-to-noise ratio, in order to meet a 5 to 10% accuracy. The systematic errors, however, are estimated to be around 6%. The vertical water vapor profiles agree well with radiosonde measurements.

Paper Details

Date Published: 17 December 1992
PDF: 5 pages
Proc. SPIE 1714, Lidar for Remote Sensing, (17 December 1992); doi: 10.1117/12.138533
Show Author Affiliations
Christoph Kiemle, DLR (Germany)
Gerhard Ehret, DLR (Germany)
Wolfgang Renger, DLR (Germany)

Published in SPIE Proceedings Vol. 1714:
Lidar for Remote Sensing
Richard J. Becherer; Christian Werner, Editor(s)

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