1 January 2003 Differential absorption lidar system for simultaneous measurement of O3and NO2: system development and measurement error estimation
Author Affiliations +
Optical Engineering, 42(1), (2003). doi:10.1117/1.1525274
Abstract
A differential absorption lidar system for simultaneous measurement of O3 and NO2 in the lower troposphere is developed. The system is based on a pair of Nd:YAG pumped dye lasers each capable of emitting two wavelengths on alternate pulses. Sum frequency generation is used to generate laser pulses of wavelengths 446.8 and 448.1 nm used for NO2 measurement. O3 concentrations of approximately 30 to 60 ppb and NO2 concentrations of approximately 4 to 45 ppb are obtained for a vertical range of 1000 to 1500 m. Changes in O3 and NO2 concentration over a time interval of a few hours suggests an anticorrelation between these quantities. The measurement error, estimated from statistical error and instrumental error, is 2.5 ppb for O3 concentration and 5.5 ppb for NO2 concentration. In the case of NO2 measurement, the error due to differential backscatter gradient is found to be a major source of error, but does not fully account for the measurement error.
Tetsuo Fukuchi, Takuya Nayuki, Nianwen Cao, Takashi Fujii, Koshichi Nemoto, Hideto Mori, Nobuo Takeuchi, "Differential absorption lidar system for simultaneous measurement of O3and NO2: system development and measurement error estimation," Optical Engineering 42(1), (1 January 2003). http://dx.doi.org/10.1117/1.1525274
JOURNAL ARTICLE
7 PAGES


SHARE
KEYWORDS
Error analysis

Dye lasers

Backscatter

Absorption

Signal attenuation

LIDAR

Nd:YAG lasers

Back to Top