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Applied Optics

Applied Optics


  • Vol. 40, Iss. 6 — Feb. 20, 2001
  • pp: 949–956

Dual differential absorption lidar for the measurement of atmospheric SO2 of the order of parts in 109

Takashi Fujii, Tetsuo Fukuchi, Naohiko Goto, Koshichi Nemoto, and Nobuo Takeuchi  »View Author Affiliations

Applied Optics, Vol. 40, Issue 6, pp. 949-956 (2001)

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Vertical concentration profiles of atmospheric SO2 of the order of parts in 109 (ppb) were measured by a multiwavelength differential absorption lidar system. The error that was due to O3 and aerosols was successfully reduced by a three-wavelength dual differential absorption lidar (DIAL), and a SO2 concentration of 1.2 ppb for 2400–3000-m altitude was obtained with 300-m range resolution. The measurement error in dual DIAL was estimated to be <1.1 ppb when several factors were considered. The influence of O3 on SO2 measurement error was experimentally evaluated from simultaneous measurements of atmospheric SO2 and O3 by two conventional DIAL pairs, each using two wavelengths.

© 2001 Optical Society of America

OCIS Codes
(000.2190) General : Experimental physics
(010.7030) Atmospheric and oceanic optics : Troposphere
(140.2050) Lasers and laser optics : Dye lasers
(280.1120) Remote sensing and sensors : Air pollution monitoring
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
(280.3640) Remote sensing and sensors : Lidar

Original Manuscript: January 31, 2000
Revised Manuscript: August 25, 2000
Published: February 20, 2001

Takashi Fujii, Tetsuo Fukuchi, Naohiko Goto, Koshichi Nemoto, and Nobuo Takeuchi, "Dual differential absorption lidar for the measurement of atmospheric SO2 of the order of parts in 109," Appl. Opt. 40, 949-956 (2001)

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