Dual Differential Absorption Lidar for the Measurement of Atmospheric SO(2) of the Order of Parts in 10(9).

Vertical concentration profiles of atmospheric SO(2) of the order of parts in 10(9) (ppb) were measured by a multiwavelength differential absorption lidar system. The error that was due to O(3) and aerosols was successfully reduced by a three-wavelength dual differential absorption lidar (DIAL), and a SO(2) 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 O(3) on SO(2) measurement error was experimentally evaluated from simultaneous measurements of atmospheric SO(2) and O(3) by two conventional DIAL pairs, each using two wavelengths.

[1]  H. Hertz,et al.  DIAL techniques for the control of sulfur dioxide emissions. , 1984, Applied optics.

[2]  Jean-Pierre Wolf,et al.  Use of lidar measurements and numerical models in air pollution research , 1990 .

[3]  E. Browell,et al.  Ultraviolet DIAL measurements of O3 profiles in regions of spatially inhomogeneous aerosols. , 1985, Applied optics.

[4]  D. Brassington.  Sulfur dioxide absorption cross-section measurements from 290 nm to 317 nm. , 1981, Applied optics.

[5]  Yoichi Ichikawa,et al.  An analysis of wet deposition of sulfate using a trajectory model for East Asia , 1995 .

[6]  B. Galle,et al.  Lidar system applied in atmospheric pollution monitoring. , 1979, Applied optics.

[7]  B. W. Jolliffe,et al.  Errors in spectroscopic measurements of SO2 due to nonexponential absorption of laser radiation, with application to the remote monitoring of atmospheric pollutants. , 1984, Applied optics.

[8]  Yoichi Ichikawa,et al.  Development of hybrid LRT model to estimate sulfur deposition in Japan , 1995 .

[9]  Sune Svanberg,et al.  Total Fluxes of Sulfur Dioxide from the Italian Volcanoes Etna, Stromboli and Vulcano Measured by Differential Absorption LIDAR and Passive Differential Optical Absorption Spectroscopy , 1994 .

[10]  Koshichi Nemoto,et al.  Error analysis of SO2 measurement by multiwavelength differential absorption lidar , 1999 .

[11]  Sune Svanberg,et al.  Mobile remote sensing system for atmospheric monitoring. , 1987, Applied optics.