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Measurement of CO2 rectifier effect during summer and winter using ground-based differential absorption LiDAR

Shi, Tianqi

Atmospheric environment. Volume 220: (2020, January 1st) -- Elsevier Ltd

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  • Title:
    Measurement of CO2 rectifier effect during summer and winter using ground-based differential absorption LiDAR
  • Author: Shi, Tianqi;
    Ma, Xin;
    Han, Ge;
    Xu, Hao;
    Qiu, Ruonan;
    He, Bin;
    Gong, Wei
  • Found In: Atmospheric environment. Volume 220: (2020, January 1st)
  • Journal Title: Atmospheric environment
  • Subjects: Air--Pollution--Meteorological aspects--Periodicals; Air--Pollution--Periodicals; Rectifier effect--Differential absorption lidar--CO2 profile--Boundary layer height; Dewey: 551.51
  • Rights: Licensed
  • Publication Details: Elsevier Ltd
  • Abstract: Abstract The rectifier effect refers to the exchange of CO2near the boundary layer of the atmosphere. This effect is an important part of the carbon cycle because it affects the vertical distribution of CO2and indirectly affects global CO2distribution. However, the intensity of this effect is difficult to measure directly. A differential absorption LiDAR (DIAL) system can observe the rectifier effect because this device can accurately measure planetary boundary layer height (PBLH) and CO2profile concentration (Quan et al., 2014; Guo et al., 2016). Accordingly, we conducted experiments in Huainan, China using a DIAL system for CO2detection developed by our group. We selected two cases, namely, summer and winter, for the analysis. Firstly, we calculated CO2profile, average CO2concentration and PBLH. Secondly, we analysed the rectifier effect. Results showed a negative correlation between PBLH and the rectifier effect. Simultaneously, we observed a special phenomenon in which CO2concentration is lower near the ground than in high altitudes. This phenomenon may be explained by the activities of plants. Highlights Measuring CO2profile with high spatial and temporal resolution. The rectifier effect of CO2could be measured by CO2DIAL. Relationship between the PBLH and the CO2rectifier effect. Physiological mechanism of plants affects CO2concentration.
  • Identifier: System Number: ETOCvdc_100093231240.0x000001; Journal ISSN: 1352-2310; 10.1016/j.atmosenv.2019.117097
  • Publication Date: 2020
  • Physical Description: Electronic
  • Shelfmark(s): 1767.120000
  • UIN: ETOCvdc_100093231240.0x000001

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