Laser technology for CO2 and H2O on-line detection in large-scale region
文献类型：EI期刊论文
| 作者 | Sun Xiaomin; Wang Liming |
| 发表日期 | 2014 |
| 关键词 | Carbon dioxide Climate change Ecosystems Greenhouse gases Light absorption |
| 英文摘要 | CO2 and H2O are the important greenhouse gases in the atmosphere. On-line monitoring of CO2 and H2O concentrations in ecosystem can be used for analyzing environment and climate change. With the near-infrared absorption lines of CO2 and H2O, CO2 and H2O on-line detection instrument in open-path based on tunable diode laser absorption spectroscopy (TDLAS) technology and automatic gain adjustment technology is designed. The continuous observation experiment is carried out in Yucheng Integrated Experimental Station, Chinese Academy of Sciences with the time resolution of 20 Hz in 1238 m optical path by this instrument. The results show that the problem of large signal intensity fluctuation in open-path detection is solved by automatic gain adjustment. The CO2 concentration in site has an obvious diurnal periodicity that the concentration is low in the daytime and high at night. Comparing with LI-7500 of eddy covariance system, the data consistency is better. This technology has the characteristics of high sensitivity, fast response and without sampling, so the stable and continuous CO2 and H2O on-line detection is achieved in large-scale regional ecosystem. |
| 出处 | Zhongguo Jiguang/Chinese Journal of Lasers
 |
| 卷 | 41期:1 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/31153]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Sun Xiaomin,Wang Liming. Laser technology for CO2 and H2O on-line detection in large-scale region. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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