Development of a Laser Gas Analyzer for Fast CO2 and H2O Flux Measurements Utilizing Derivative Absorption Spectroscopy at a 100 Hz Data Rate

doi:10.3390/s21103392

	Development of a Laser Gas Analyzer for Fast CO2 and H2O Flux Measurements Utilizing Derivative Absorption Spectroscopy at a 100 Hz Data Rate
	Li, Mingxing 1,4; Kan, Ruifeng 1; He, Yabai 1; Liu, Jianguo 1; Xu, Zhenyu 1; Chen, Bing 1; Yao, Lu 1; Ruan, Jun 1; Xia, Huihui 1; Deng, Hao 1
刊名	SENSORS
	2021-05-01
卷号	21
关键词	laser gas analyzer flux measurement eddy covariance method derivative absorption spectroscopy gas sensors
DOI	10.3390/s21103392
通讯作者	Kan, Ruifeng(kanruifeng@aiofm.ac.cn) ; He, Yabai(yabaihe@hotmail.com)
英文摘要	We report the development of a laser gas analyzer that measures gas concentrations at a data rate of 100 Hz. This fast data rate helps eddy covariance calculations for gas fluxes in turbulent high wind speed environments. The laser gas analyzer is based on derivative laser absorption spectroscopy and set for measurements of water vapor (H2O, at wavelength similar to 1392 nm) and carbon dioxide (CO2, at similar to 2004 nm). This instrument, in combination with an ultrasonic anemometer, has been tested experimentally in both marine and terrestrial environments. First, we compared the accuracy of results between the laser gas analyzer and a high-quality commercial instrument with a max data rate of 20 Hz. We then analyzed and compared the correlation of H2O flux results at data rates of 100 Hz and 20 Hz in both high and low wind speeds to verify the contribution of high frequency components. The measurement results show that the contribution of 100 Hz data rate to flux calculations is about 11% compared to that measured with 20 Hz data rate, in an environment with wind speed of similar to 10 m/s. Therefore, it shows that the laser gas analyzer with high detection frequency is more suitable for measurements in high wind speed environments.
资助项目	National Program on Key Research and Development Project of China[2018YFC0213103] ; National Natural Science Foundation of China[41901081]
WOS关键词	CARBON-DIOXIDE ; WATER-VAPOR ; SENSOR ; TDLAS ; METHANE
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000662608000001
资助机构	National Program on Key Research and Development Project of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123814]
专题	中国科学院合肥物质科学研究院
通讯作者	Kan, Ruifeng; He, Yabai
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, HeFei Inst Phys Sci, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China 3.Minist Nat Resources, State Key Lab Satellite Ocean Environm Dynam, Inst Oceanog 2, Hangzhou 310012, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Li, Mingxing,Kan, Ruifeng,He, Yabai,et al. Development of a Laser Gas Analyzer for Fast CO2 and H2O Flux Measurements Utilizing Derivative Absorption Spectroscopy at a 100 Hz Data Rate[J]. SENSORS,2021,21.
APA	Li, Mingxing.,Kan, Ruifeng.,He, Yabai.,Liu, Jianguo.,Xu, Zhenyu.,...&Cheng, Xueling.(2021).Development of a Laser Gas Analyzer for Fast CO2 and H2O Flux Measurements Utilizing Derivative Absorption Spectroscopy at a 100 Hz Data Rate.SENSORS,21.
MLA	Li, Mingxing,et al."Development of a Laser Gas Analyzer for Fast CO2 and H2O Flux Measurements Utilizing Derivative Absorption Spectroscopy at a 100 Hz Data Rate".SENSORS 21(2021).