Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017)
In this comment, we outline two major concerns regarding some of the key data presented in this paper. Both of these concerns are associated with the natural abundance radiocarbon-methane ( 14 C-CH 4 ) data. First, no systematic methodology is presented, nor previous peer-reviewed publication refere...
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ftdoajarticles:oai:doaj.org/article:109b1f1b7d644a1a8c5efbc2966624fe 2023-05-15T14:57:20+02:00 Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017) K. J. Sparrow J. D. Kessler 2018-08-01T00:00:00Z https://doi.org/10.5194/bg-15-4777-2018 https://doaj.org/article/109b1f1b7d644a1a8c5efbc2966624fe EN eng Copernicus Publications https://www.biogeosciences.net/15/4777/2018/bg-15-4777-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-4777-2018 1726-4170 1726-4189 https://doaj.org/article/109b1f1b7d644a1a8c5efbc2966624fe Biogeosciences, Vol 15, Pp 4777-4779 (2018) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/bg-15-4777-2018 2022-12-31T01:47:42Z In this comment, we outline two major concerns regarding some of the key data presented in this paper. Both of these concerns are associated with the natural abundance radiocarbon-methane ( 14 C-CH 4 ) data. First, no systematic methodology is presented, nor previous peer-reviewed publication referenced, for how these samples were collected, prepared, and ultimately analyzed for 14 C-CH 4 . Not only are these procedural details missing, but the critical evaluation of them using gaseous and aqueous blanks and standards was omitted although these details are essential for any reader to evaluate the quality of data and subsequent interpretations. Second, due to the lack of methodological details, the source of the sporadic anthropogenic contamination cannot be determined and thus it is premature for the authors to suggest it was in the natural environment prior to sample collection. As the natural 14 C-CH 4 data are necessary for the authors' stated scientific objectives of understanding the origin of methane in the East Siberian Arctic Shelf, our comment serves to highlight that the study's objectives have not been met. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Biogeosciences 15 15 4777 4779 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 K. J. Sparrow J. D. Kessler Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017) |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
In this comment, we outline two major concerns regarding some of the key data presented in this paper. Both of these concerns are associated with the natural abundance radiocarbon-methane ( 14 C-CH 4 ) data. First, no systematic methodology is presented, nor previous peer-reviewed publication referenced, for how these samples were collected, prepared, and ultimately analyzed for 14 C-CH 4 . Not only are these procedural details missing, but the critical evaluation of them using gaseous and aqueous blanks and standards was omitted although these details are essential for any reader to evaluate the quality of data and subsequent interpretations. Second, due to the lack of methodological details, the source of the sporadic anthropogenic contamination cannot be determined and thus it is premature for the authors to suggest it was in the natural environment prior to sample collection. As the natural 14 C-CH 4 data are necessary for the authors' stated scientific objectives of understanding the origin of methane in the East Siberian Arctic Shelf, our comment serves to highlight that the study's objectives have not been met. |
format |
Article in Journal/Newspaper |
author |
K. J. Sparrow J. D. Kessler |
author_facet |
K. J. Sparrow J. D. Kessler |
author_sort |
K. J. Sparrow |
title |
Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017) |
title_short |
Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017) |
title_full |
Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017) |
title_fullStr |
Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017) |
title_full_unstemmed |
Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017) |
title_sort |
comment on “the origin of methane in the east siberian arctic shelf unraveled with triple isotope analysis” by sapart et al. (2017) |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-15-4777-2018 https://doaj.org/article/109b1f1b7d644a1a8c5efbc2966624fe |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Biogeosciences, Vol 15, Pp 4777-4779 (2018) |
op_relation |
https://www.biogeosciences.net/15/4777/2018/bg-15-4777-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-4777-2018 1726-4170 1726-4189 https://doaj.org/article/109b1f1b7d644a1a8c5efbc2966624fe |
op_doi |
https://doi.org/10.5194/bg-15-4777-2018 |
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Biogeosciences |
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15 |
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15 |
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4777 |
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4779 |
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