Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica
Trends of carbon monoxide (CO) for the past 100 years are reported as derived from Antarctic firn drilling expeditions. Only one of 3 campaigns provided high quality results. The trend was reconstructed using a firn air model in the forward mode to constrain age distributions and assuming the CO inc...
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Gottingen, Copernicus GmbH
2022
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Online Access: | https://doi.org/10.5194/acp-7-295-2007 https://infoscience.epfl.ch/record/298318/files/acp-7-295-2007.pdf http://infoscience.epfl.ch/record/298318 |
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ftinfoscience:oai:infoscience.epfl.ch:298318 2023-05-15T13:43:17+02:00 Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica Assonov, S. S. Brenninkmeijer, C. a. M. Joeckel, P. J. Mulvaney, R. Bernard, S. Chappellaz, J. 2022-11-23T16:11:23Z https://doi.org/10.5194/acp-7-295-2007 https://infoscience.epfl.ch/record/298318/files/acp-7-295-2007.pdf http://infoscience.epfl.ch/record/298318 unknown Gottingen, Copernicus GmbH doi:10.5194/acp-7-295-2007 isi:000243747500002 https://infoscience.epfl.ch/record/298318/files/acp-7-295-2007.pdf http://infoscience.epfl.ch/record/298318 http://infoscience.epfl.ch/record/298318 Text 2022 ftinfoscience https://doi.org/10.5194/acp-7-295-2007 2023-02-13T23:12:29Z Trends of carbon monoxide (CO) for the past 100 years are reported as derived from Antarctic firn drilling expeditions. Only one of 3 campaigns provided high quality results. The trend was reconstructed using a firn air model in the forward mode to constrain age distributions and assuming the CO increase to be proportional to its major source, namely CH4. The results suggest that CO has increased by ∼38%, from 38±7 to 52.5±1.5ppbv over a period of roughly 100 years. The concentrations are on the volumetric scale which corresponds to ∼1.08 of the scale used by NOAA/CMDL. The estimated CO increase is somewhat larger than what is estimated from the CO budget estimations and the CH4 growth alone. The most likely explanation might be an increase in biomass burning emissions. Using CH3Cl as another proxy produces a very similar reconstruction. Text Antarc* Antarctic Antarctica Berkner Island EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Berkner Island ENVELOPE(-48.117,-48.117,-79.333,-79.333) Atmospheric Chemistry and Physics 7 2 295 308 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
language |
unknown |
description |
Trends of carbon monoxide (CO) for the past 100 years are reported as derived from Antarctic firn drilling expeditions. Only one of 3 campaigns provided high quality results. The trend was reconstructed using a firn air model in the forward mode to constrain age distributions and assuming the CO increase to be proportional to its major source, namely CH4. The results suggest that CO has increased by ∼38%, from 38±7 to 52.5±1.5ppbv over a period of roughly 100 years. The concentrations are on the volumetric scale which corresponds to ∼1.08 of the scale used by NOAA/CMDL. The estimated CO increase is somewhat larger than what is estimated from the CO budget estimations and the CH4 growth alone. The most likely explanation might be an increase in biomass burning emissions. Using CH3Cl as another proxy produces a very similar reconstruction. |
format |
Text |
author |
Assonov, S. S. Brenninkmeijer, C. a. M. Joeckel, P. J. Mulvaney, R. Bernard, S. Chappellaz, J. |
spellingShingle |
Assonov, S. S. Brenninkmeijer, C. a. M. Joeckel, P. J. Mulvaney, R. Bernard, S. Chappellaz, J. Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica |
author_facet |
Assonov, S. S. Brenninkmeijer, C. a. M. Joeckel, P. J. Mulvaney, R. Bernard, S. Chappellaz, J. |
author_sort |
Assonov, S. S. |
title |
Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica |
title_short |
Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica |
title_full |
Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica |
title_fullStr |
Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica |
title_full_unstemmed |
Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica |
title_sort |
evidence for a co increase in the sh during the 20th century based on firn air samples from berkner island, antarctica |
publisher |
Gottingen, Copernicus GmbH |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-7-295-2007 https://infoscience.epfl.ch/record/298318/files/acp-7-295-2007.pdf http://infoscience.epfl.ch/record/298318 |
long_lat |
ENVELOPE(-48.117,-48.117,-79.333,-79.333) |
geographic |
Antarctic Berkner Island |
geographic_facet |
Antarctic Berkner Island |
genre |
Antarc* Antarctic Antarctica Berkner Island |
genre_facet |
Antarc* Antarctic Antarctica Berkner Island |
op_source |
http://infoscience.epfl.ch/record/298318 |
op_relation |
doi:10.5194/acp-7-295-2007 isi:000243747500002 https://infoscience.epfl.ch/record/298318/files/acp-7-295-2007.pdf http://infoscience.epfl.ch/record/298318 |
op_doi |
https://doi.org/10.5194/acp-7-295-2007 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
7 |
container_issue |
2 |
container_start_page |
295 |
op_container_end_page |
308 |
_version_ |
1766186818091352064 |