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Proceedings Paper

Raman DIAL measurement of ozone and water vapor in the lower troposphere
Author(s): Benoit Lazzarotto; Gilles Larcheveque; Philippe Quaglia; Valentin Simeonov; Hubert van den Bergh; Bertrand Calpini
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Paper Abstract

A new lidar for the measurement of tropospheric ozone is proposed, based on the differential analysis of the Raman backscattered signals on nitrogen and oxygen, which is far less sensitive to the aerosols than the classical DIAL system. Using a third Raman channel, the system is able to measure the water vapor mixing ratio simultaneously. The transmitting section of the instrument is composed of a single wavelength at 266 nm, generated by a quadrupled Nd:YAG laser, while the receiving section is the combination of a 20 cm Newton telescope, a polychromator, custom made band pass filters and miniature photomultiplier, giving a compact and efficient optical layout. The cross-talk between the different channels, and the rejection of the 266 nm wavelength have been measured in detail and will be presented. Time series of ozone and water vapor vertical profile during some days have been performed in the early spring 99.

Paper Details

Date Published: 16 September 1999
PDF: 8 pages
Proc. SPIE 3821, Environmental Sensing and Applications, (16 September 1999); doi: 10.1117/12.364167
Show Author Affiliations
Benoit Lazzarotto, Swiss Federal Institute of Technology (Switzerland)
Gilles Larcheveque, Swiss Federal Institute of Technology (Switzerland)
Philippe Quaglia, Swiss Federal Institute of Technology (Switzerland)
Valentin Simeonov, Swiss Federal Institute of Technology (Switzerland)
Hubert van den Bergh, Swiss Federal Institute of Technology (Switzerland)
Bertrand Calpini, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 3821:
Environmental Sensing and Applications
Michel R. Carleer; Moira Hilton; Torsten Lamp; Rainer Reuter; George M. Russwurm; Klaus Schaefer; Konradin Weber; Klaus C. H. Weitkamp; Jean-Pierre Wolf; Ljuba Woppowa, Editor(s)

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