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9 January 2002 Simultaneous profiling of O3 and NO2 in the lower troposphere by multiwavelength differential absorption lidar
Tetsuo Fukuchi, Takuya Nayuki, Nianwen Cao, Takashi Fujii, Koshichi Nemoto, Hideto Mori, Nobuo Takeuchi
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Proceedings Volume 4484, Lidar Remote Sensing for Industry and Environment Monitoring II; (2002) https://doi.org/10.1117/12.452770
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States
Abstract
Vertical concentration profiles of O3 and NO2 in the lower troposphere were measured simultaneously using a multi wavelength differential absorption lidar (DIAL) system based on a pair of Nd:YAG pumped dye lasers each capable of emitting two wavelength on alternate pulses. A mixture of Rhodamine 590 and Rhodamine 610 dyes and second harmonic generation was used to generate wavelengths 288.2 nm and 293. 5 nm for O3 measurement, and sum frequency mixing of LDS765 dye laser radiation with Nd:YAG fundamental was used to generate wavelengths 448.1 nm and 446.8 nm for NO2 measurement. O3 profiles of approximately 30-50 ppb and NO2 profiles of 0-20 ppb were obtained for vertical range 1500-2500 m. The measurement error was estimated to be < 6 ppb for 150 m range resolution, or < 0.9 ppm-m, for both O3 and NO2.
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Tetsuo Fukuchi, Takuya Nayuki, Nianwen Cao, Takashi Fujii, Koshichi Nemoto, Hideto Mori, and Nobuo Takeuchi "Simultaneous profiling of O3 and NO2 in the lower troposphere by multiwavelength differential absorption lidar", Proc. SPIE 4484, Lidar Remote Sensing for Industry and Environment Monitoring II, (9 January 2002); https://doi.org/10.1117/12.452770
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KEYWORDS
NOx
Error analysis
Backscatter
Absorption
Signal attenuation
Dye lasers
LIDAR
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