Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method
The microbial by-product nitrous oxide ( N 2 O ), a potent greenhouse gas and ozone depleting substance, has conventionally been assumed to have minimal emissions in permafrost regions. This assumption has been questioned by recent in situ studies which have demonstrated that some geologic features...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-19-4257-2019 https://doaj.org/article/c3503b242c4e4c02952b571228ff0173 |
id |
ftdoajarticles:oai:doaj.org/article:c3503b242c4e4c02952b571228ff0173 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:c3503b242c4e4c02952b571228ff0173 2023-05-15T17:40:15+02:00 Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method J. Wilkerson R. Dobosy D. S. Sayres C. Healy E. Dumas B. Baker J. G. Anderson 2019-04-01T00:00:00Z https://doi.org/10.5194/acp-19-4257-2019 https://doaj.org/article/c3503b242c4e4c02952b571228ff0173 EN eng Copernicus Publications https://www.atmos-chem-phys.net/19/4257/2019/acp-19-4257-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-4257-2019 1680-7316 1680-7324 https://doaj.org/article/c3503b242c4e4c02952b571228ff0173 Atmospheric Chemistry and Physics, Vol 19, Pp 4257-4268 (2019) Physics QC1-999 Chemistry QD1-999 article 2019 ftdoajarticles https://doi.org/10.5194/acp-19-4257-2019 2022-12-31T12:27:47Z The microbial by-product nitrous oxide ( N 2 O ), a potent greenhouse gas and ozone depleting substance, has conventionally been assumed to have minimal emissions in permafrost regions. This assumption has been questioned by recent in situ studies which have demonstrated that some geologic features in permafrost may, in fact, have elevated emissions comparable to those of tropical soils. However, these recent studies, along with every known in situ study focused on permafrost N 2 O fluxes, have used chambers to examine small areas ( <50 m 2 ). In late August 2013, we used the airborne eddy-covariance technique to make in situ N 2 O flux measurements over the North Slope of Alaska from a low-flying aircraft spanning a much larger area: around 310 km 2 . We observed large variability of N 2 O fluxes with many areas exhibiting negligible emissions. Still, the daily mean averaged over our flight campaign was 3.8 (2.2–4.7) mg N 2 O m −2 d −1 with the 90 % confidence interval shown in parentheses. If these measurements are representative of the whole month, then the permafrost areas we observed emitted a total of around 0.04–0.09 g m −2 for August, which is comparable to what is typically assumed to be the upper limit of yearly emissions for these regions. Article in Journal/Newspaper north slope permafrost Alaska Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 19 7 4257 4268 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. Wilkerson R. Dobosy D. S. Sayres C. Healy E. Dumas B. Baker J. G. Anderson Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The microbial by-product nitrous oxide ( N 2 O ), a potent greenhouse gas and ozone depleting substance, has conventionally been assumed to have minimal emissions in permafrost regions. This assumption has been questioned by recent in situ studies which have demonstrated that some geologic features in permafrost may, in fact, have elevated emissions comparable to those of tropical soils. However, these recent studies, along with every known in situ study focused on permafrost N 2 O fluxes, have used chambers to examine small areas ( <50 m 2 ). In late August 2013, we used the airborne eddy-covariance technique to make in situ N 2 O flux measurements over the North Slope of Alaska from a low-flying aircraft spanning a much larger area: around 310 km 2 . We observed large variability of N 2 O fluxes with many areas exhibiting negligible emissions. Still, the daily mean averaged over our flight campaign was 3.8 (2.2–4.7) mg N 2 O m −2 d −1 with the 90 % confidence interval shown in parentheses. If these measurements are representative of the whole month, then the permafrost areas we observed emitted a total of around 0.04–0.09 g m −2 for August, which is comparable to what is typically assumed to be the upper limit of yearly emissions for these regions. |
format |
Article in Journal/Newspaper |
author |
J. Wilkerson R. Dobosy D. S. Sayres C. Healy E. Dumas B. Baker J. G. Anderson |
author_facet |
J. Wilkerson R. Dobosy D. S. Sayres C. Healy E. Dumas B. Baker J. G. Anderson |
author_sort |
J. Wilkerson |
title |
Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method |
title_short |
Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method |
title_full |
Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method |
title_fullStr |
Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method |
title_full_unstemmed |
Permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method |
title_sort |
permafrost nitrous oxide emissions observed on a landscape scale using the airborne eddy-covariance method |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-4257-2019 https://doaj.org/article/c3503b242c4e4c02952b571228ff0173 |
genre |
north slope permafrost Alaska |
genre_facet |
north slope permafrost Alaska |
op_source |
Atmospheric Chemistry and Physics, Vol 19, Pp 4257-4268 (2019) |
op_relation |
https://www.atmos-chem-phys.net/19/4257/2019/acp-19-4257-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-4257-2019 1680-7316 1680-7324 https://doaj.org/article/c3503b242c4e4c02952b571228ff0173 |
op_doi |
https://doi.org/10.5194/acp-19-4257-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
7 |
container_start_page |
4257 |
op_container_end_page |
4268 |
_version_ |
1766141129050292224 |