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Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS
Monitoring of CO(2) column concentrations is valuable for atmospheric research. A mobile open-path system was developed based on tunable diode laser absorption spectroscopy (TDLAS) to measure atmospheric CO(2) column concentrations. A laser beam was emitted downward from a distributed feedback diode...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7958612/ https://www.ncbi.nlm.nih.gov/pubmed/33801410 http://dx.doi.org/10.3390/s21051722 |
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author | Xin, Fengxin Li, Jie Guo, Jinjia Yang, Dewang Wang, Yong Tang, Qiuhua Liu, Zhishen |
author_facet | Xin, Fengxin Li, Jie Guo, Jinjia Yang, Dewang Wang, Yong Tang, Qiuhua Liu, Zhishen |
author_sort | Xin, Fengxin |
collection | PubMed |
description | Monitoring of CO(2) column concentrations is valuable for atmospheric research. A mobile open-path system was developed based on tunable diode laser absorption spectroscopy (TDLAS) to measure atmospheric CO(2) column concentrations. A laser beam was emitted downward from a distributed feedback diode laser at 2 μm and then reflected by the retroreflector array on the ground. We measured the CO(2) column concentrations over the 20 and 110 m long vertical path. Several single-point sensors were distributed at different heights to provide comparative measurements for the open-path TDLAS system. The results showed that the minimum detection limit of system was 0.52 ppm. Some similarities were observed in trends from the open-path TDLAS system and these sensors, but the average of these sensors was more consistent with the open-path TDLAS system values than the single-point measurement. These field measurements demonstrate the feasibility of open-path TDLAS for measuring the CO(2) column concentration and monitoring carbon emission over large areas. |
format | Online Article Text |
id | pubmed-7958612 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79586122021-03-16 Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS Xin, Fengxin Li, Jie Guo, Jinjia Yang, Dewang Wang, Yong Tang, Qiuhua Liu, Zhishen Sensors (Basel) Communication Monitoring of CO(2) column concentrations is valuable for atmospheric research. A mobile open-path system was developed based on tunable diode laser absorption spectroscopy (TDLAS) to measure atmospheric CO(2) column concentrations. A laser beam was emitted downward from a distributed feedback diode laser at 2 μm and then reflected by the retroreflector array on the ground. We measured the CO(2) column concentrations over the 20 and 110 m long vertical path. Several single-point sensors were distributed at different heights to provide comparative measurements for the open-path TDLAS system. The results showed that the minimum detection limit of system was 0.52 ppm. Some similarities were observed in trends from the open-path TDLAS system and these sensors, but the average of these sensors was more consistent with the open-path TDLAS system values than the single-point measurement. These field measurements demonstrate the feasibility of open-path TDLAS for measuring the CO(2) column concentration and monitoring carbon emission over large areas. MDPI 2021-03-02 /pmc/articles/PMC7958612/ /pubmed/33801410 http://dx.doi.org/10.3390/s21051722 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Communication Xin, Fengxin Li, Jie Guo, Jinjia Yang, Dewang Wang, Yong Tang, Qiuhua Liu, Zhishen Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS |
title | Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS |
title_full | Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS |
title_fullStr | Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS |
title_full_unstemmed | Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS |
title_short | Measurement of Atmospheric CO(2) Column Concentrations Based on Open-Path TDLAS |
title_sort | measurement of atmospheric co(2) column concentrations based on open-path tdlas |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7958612/ https://www.ncbi.nlm.nih.gov/pubmed/33801410 http://dx.doi.org/10.3390/s21051722 |
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