| 可调谐半导体激光吸收光谱法监测二氧化碳的通量 |
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| 引用本文： | Song XM,Liu JG,Zhang YJ,Zeng ZY,He Y,Cui YB,Chen Y,Tian YZ,Zhang L. 可调谐半导体激光吸收光谱法监测二氧化碳的通量[J]. 光谱学与光谱分析, 2011, 31(1): 184-187. DOI: 10.3964/j.issn.1000-0593(2011)01-0184-04 |
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| 作者姓名： | Song XM Liu JG Zhang YJ Zeng ZY He Y Cui YB Chen Y Tian YZ Zhang L |
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| 作者单位： | 中国科学院安徽光学精密机械研究所环境光学中心,中国科学院环境光学与技术重点实验室,安徽合肥,230031 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX-YW-411)资助 |
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| 摘 要： | 含碳温室气体浓度增加所加剧的温室效应是气候变化的重要原因,大面积范围内二氧化碳气体通量的测量对于评价各类陆地生态系统对大气中主要温室气体浓度的贡献具有重要的意义。可调谐半导体激光吸收(TDLAS)光谱技术具有高分辨率、高灵敏度以及快速响应等特点,是痕量气体高灵敏快速监测的新方法。文章以可调谐分布反馈半导体激光器作为光源,通过波长调制方法对1.573μm附近二氧化碳气体某一吸收线的二次谐波信号测量,结合激光分束技术,实现对不同高度层面700多米光程范围内二氧化碳气体浓度的快速在线检测。结合大口径闪烁仪测量出来的莫宁-奥布霍夫长度和特征速度,通过公式计算得到一天内二氧化碳气体的通量在-1.5～2.5mg·(m2·s)-1范围内的波动,突破了目前对近地面痕量气体通量的监测只能提供局地结果的状况,使大面积范围内痕量气体通量的测量成为可能。
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| 关 键 词： | 可调谐半导体激光吸收光谱 二氧化碳浓度 二氧化碳通量 |
Monitoring the flux of carbon dioxide gas with tunable diode laser absorption spectroscopy |
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| Song Xue-Mei,Liu Jian-Guo,Zhang Yu-Jun,Zeng Zong-Yong,He Ying,Cui Yi-Ben,Chen Yin,Tian Yong-Zhi,Zhang Liang. Monitoring the flux of carbon dioxide gas with tunable diode laser absorption spectroscopy[J]. Spectroscopy and Spectral Analysis, 2011, 31(1): 184-187. DOI: 10.3964/j.issn.1000-0593(2011)01-0184-04 |
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| Authors: | Song Xue-Mei Liu Jian-Guo Zhang Yu-Jun Zeng Zong-Yong He Ying Cui Yi-Ben Chen Yin Tian Yong-Zhi Zhang Liang |
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| Affiliation: | SONG Xue-mei,LIU Jian-guo,ZHANG Yu-jun,ZENG Zong-yong,HE Ying,CUI Yi-ben,CHEN Yin,TIAN Yong-zhi,ZHANG Liang Key Lab of Environment Optics &Technology and Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China |
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| Abstract: | The greenhouse effect exacerbated by the increase of Carbon-containing gases is the more important causes of the climate change, It is very meaningful to the large-scale flux of carbon dioxide detection for the estimate the contributions of the main greenhouse gases in the atmosphere of various errestrial eco-systems. Tunable diode laser absorption spectroscopy (TDLAS) is a highly sensitive, highly selective and fast time response trace gas detection technique. In the present paper, the authors used a DFB l... |
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| Keywords: | Tunable diode laser absorption spectroscopy Carbon dioxide concentration Flux of the carbon dioxide gas |
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