中国物理B ›› 2019, Vol. 28 ›› Issue (1): 13301-013301.doi: 10.1088/1674-1056/28/1/013301
• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇 下一篇
Novel infrared differential optical absorption spectroscopy remote sensing system to measure carbon dioxide emission
Ru-Wen Wang(王汝雯), Pin-Hua Xie(谢品华), Jin Xu(徐晋), Ang Li(李昂)
- 1 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
2 University of Science and Technology of China, Hefei 230026, China;
3 CAS Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
Novel infrared differential optical absorption spectroscopy remote sensing system to measure carbon dioxide emission
Ru-Wen Wang(王汝雯)1,2, Pin-Hua Xie(谢品华)1,2,3, Jin Xu(徐晋)1, Ang Li(李昂)1
- 1 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
2 University of Science and Technology of China, Hefei 230026, China;
3 CAS Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
摘要：
A CO2 infrared remote sensing system based on the algorithm of weighting function modified differential optical absorption spectroscopy (WFM-DOAS) is developed for measuring CO2 emissions from pollution sources. The system is composed of a spectrometer with band from 900 nm to 1700 nm, a telescope with a field of view of 1.12°, a silica optical fiber, an automatic position adjuster, and the data acquisition and processing module. The performance is discussed, including the electronic noise of the charge-coupled device (CCD), the spectral shift, and detection limits. The resolution of the spectrometer is 0.4 nm, the detection limit is 8.5×1020 molecules·cm-2, and the relative retrieval error is < 1.5%. On May 26, 2018, a field experiment was performed to measure CO2 emissions from the Feng-tai power plant, and a two-dimensional distribution of CO2 from the plume was obtained. The retrieved differential slant column densities (dSCDs) of CO2 are around 2×1021 molecules·cm-2 in the unpolluted areas, 5.5×1021 molecules·cm-2 in the plume locations most strongly affected by local CO2 emissions, and the fitting error is less than 2×1020 molecules·cm-2, which proves that the infrared remote sensing system has the characteristics of fast response and high precision, suitable for measuring CO2 emission from the sources.
中图分类号: (Infrared spectra)
- 33.20.Ea