Lü Yongxue, Tianshu Zhang, Guangqiang Fan, Yan Xiang, Jie Cheng, Lü Lihui. Monitoring of Pollution Characteristics of Atmospheric Greenhouse Gases Using Fourier Infrared System[J]. Chinese Journal of Lasers, 2023, 50(6): 0611001
- Chinese Journal of Lasers
- Vol. 50, Issue 6, 0611001 (2023)
Fig. 1. Diagram of open-path FTIR system
Fig. 2. Experimental apparatus. (a) Open range FTIR active telemetry system; (b) reflector telescope; (c) small room for installation of reflector telescope
Fig. 3. Correlation analysis of mass concentrations of CO2, CH4 and CO measured by Picarro greenhouse gas analyzer and OP-FTIR system. (a) CO2; (b) CH4; (c) CO
Fig. 4. Measured spectra, fitted spectra, residual spectra and transmittance spectra of H2O, CO2, CH4 and CO in the corresponding wavelength bands. (a) CO2; (b) CH4; (c) CO
Fig. 5. Weather conditions during trial. (a) Temporal variation of relative humidity, temperature and wind speed; (b) relationship between wind speed and wind direction variation
Fig. 6. Gas mass concentration in relation to temperature and relative humidity. (a) CO2; (b) CH4; (c) CO
Fig. 7. Gas mass concentration in relation to wind direction and wind speed. (a) CO2; (b) CH4; (c) CO
Fig. 8. Time series variation of CO2, CH4 and CO mass concentration. (a) CO2; (b) CH4; (c) CO
Fig. 9. Correlation between CO or CH4 and CO2. (a) CH4 and CO2; (b) CO and CO2
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