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Optical Engineering

Estimation of differential absorption lidar measurement error for NO2 profiling in the lower troposphere
Author(s): Nianwen Cao; Takashi Fujii; Tetsuo Fukuchi; Naohiko Goto; Koshichi Nemoto; Nobuo Takeuchi
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Paper Abstract

Measurement error for NO2 profiling in the lower troposphere, including the effects of aerosol backscatter, molecular backscatter, and extinction due to inhomogeneous aerosol distribution, is estimated for vertical NO2 concentration profiles measured by differential absorption lidar (DIAL). Vertical NO2 concentration profiles of 0 to 40 ppb and null profiles are obtained for an altitude of 900 to 2250 m with a 150-m range resolution. The deviation of the null profiles from zero, which provides a measure of how precisely the laser beams were aligned, was <2.0 ppb. The mean statistical error, systematic error from aerosol, and absorption cross section error were 3.4, <3.0, and <1.2 ppb, respectively.

Paper Details

Date Published: 1 January 2002
PDF: 7 pages
Opt. Eng. 41(1) doi: 10.1117/1.1419191
Published in: Optical Engineering Volume 41, Issue 1
Show Author Affiliations
Nianwen Cao, Central Research Institute of Electric Power Industry (Japan)
Takashi Fujii, Central Research Institute of Electric Power Industry (Japan)
Tetsuo Fukuchi, Central Research Institute of Electric Power Industry (Japan)
Naohiko Goto, Central Research Institute of Electric Power Industry (Japan)
Koshichi Nemoto, Central Research Institute of Electric Power Industry (Japan)
Nobuo Takeuchi, Chiba Univ. (Japan)


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