Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system
In this paper, the performance of a low-cost and low-power methane ( CH 4 ) sensing system prototype based on a metal oxide sensor (MOS) sensitive to CH 4 is tested in a natural CH 4 -emitting environment at the Greenland ice sheet (GrIS). We investigate if the MOS could be used as a supplementary m...
Published in: | Atmospheric Measurement Techniques |
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Online Access: | https://doi.org/10.5194/amt-13-3319-2020 https://amt.copernicus.org/articles/13/3319/2020/ |
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ftcopernicus:oai:publications.copernicus.org:amt82108 2023-05-15T16:28:31+02:00 Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system Jørgensen, Christian Juncher Mønster, Jacob Fuglsang, Karsten Christiansen, Jesper Riis 2020-06-22 application/pdf https://doi.org/10.5194/amt-13-3319-2020 https://amt.copernicus.org/articles/13/3319/2020/ eng eng doi:10.5194/amt-13-3319-2020 https://amt.copernicus.org/articles/13/3319/2020/ eISSN: 1867-8548 Text 2020 ftcopernicus https://doi.org/10.5194/amt-13-3319-2020 2020-07-20T16:22:04Z In this paper, the performance of a low-cost and low-power methane ( CH 4 ) sensing system prototype based on a metal oxide sensor (MOS) sensitive to CH 4 is tested in a natural CH 4 -emitting environment at the Greenland ice sheet (GrIS). We investigate if the MOS could be used as a supplementary measurement technique for monitoring CH 4 emissions from the GrIS with the scope of setting up a CH 4 monitoring network along the GrIS. The performance of the MOS is evaluated on the basis of simultaneous measurements using a cavity ring-down spectroscopy (CRDS) reference instrument for CH 4 over a field calibration period of approximately 100 h. Results from the field calibration period show that CH 4 concentrations measured with the MOS are in very good agreement with the reference CRDS. The absolute concentration difference between the MOS and the CRDS reference values within the measured concentration range of approximately 2–100 ppm CH 4 was generally lower than 5 ppm CH 4 , while the relative concentration deviations between the MOS and the CRDS were generally below 10 %. The calculated root-mean-square error (RMSE) for the entire field calibration period was 1.69 ppm ( n =37 140 ). The results confirm that low-cost and low-power MOSs can be effectively used for atmospheric CH 4 measurements under stable water vapor conditions. The primary scientific importance of the study is that it provides a clear example of how the application of low-cost technology can enhance our future understanding on the climatic feedbacks from the cryosphere to the atmosphere. Text Greenland Ice Sheet Copernicus Publications: E-Journals Greenland Atmospheric Measurement Techniques 13 6 3319 3328 |
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Open Polar |
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Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
In this paper, the performance of a low-cost and low-power methane ( CH 4 ) sensing system prototype based on a metal oxide sensor (MOS) sensitive to CH 4 is tested in a natural CH 4 -emitting environment at the Greenland ice sheet (GrIS). We investigate if the MOS could be used as a supplementary measurement technique for monitoring CH 4 emissions from the GrIS with the scope of setting up a CH 4 monitoring network along the GrIS. The performance of the MOS is evaluated on the basis of simultaneous measurements using a cavity ring-down spectroscopy (CRDS) reference instrument for CH 4 over a field calibration period of approximately 100 h. Results from the field calibration period show that CH 4 concentrations measured with the MOS are in very good agreement with the reference CRDS. The absolute concentration difference between the MOS and the CRDS reference values within the measured concentration range of approximately 2–100 ppm CH 4 was generally lower than 5 ppm CH 4 , while the relative concentration deviations between the MOS and the CRDS were generally below 10 %. The calculated root-mean-square error (RMSE) for the entire field calibration period was 1.69 ppm ( n =37 140 ). The results confirm that low-cost and low-power MOSs can be effectively used for atmospheric CH 4 measurements under stable water vapor conditions. The primary scientific importance of the study is that it provides a clear example of how the application of low-cost technology can enhance our future understanding on the climatic feedbacks from the cryosphere to the atmosphere. |
format |
Text |
author |
Jørgensen, Christian Juncher Mønster, Jacob Fuglsang, Karsten Christiansen, Jesper Riis |
spellingShingle |
Jørgensen, Christian Juncher Mønster, Jacob Fuglsang, Karsten Christiansen, Jesper Riis Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system |
author_facet |
Jørgensen, Christian Juncher Mønster, Jacob Fuglsang, Karsten Christiansen, Jesper Riis |
author_sort |
Jørgensen, Christian Juncher |
title |
Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system |
title_short |
Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system |
title_full |
Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system |
title_fullStr |
Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system |
title_full_unstemmed |
Continuous methane concentration measurements at the Greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system |
title_sort |
continuous methane concentration measurements at the greenland ice sheet–atmosphere interface using a low-cost, low-power metal oxide sensor system |
publishDate |
2020 |
url |
https://doi.org/10.5194/amt-13-3319-2020 https://amt.copernicus.org/articles/13/3319/2020/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
eISSN: 1867-8548 |
op_relation |
doi:10.5194/amt-13-3319-2020 https://amt.copernicus.org/articles/13/3319/2020/ |
op_doi |
https://doi.org/10.5194/amt-13-3319-2020 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
13 |
container_issue |
6 |
container_start_page |
3319 |
op_container_end_page |
3328 |
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1766018167854858240 |