Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere
During Arctic springtime, halogen radicals oxidize atmospheric elemental mercury (Hg 0 ), which deposits to the cryosphere. This is followed by a summertime atmospheric Hg 0 peak that is thought to result mostly from terrestrial Hg inputs to the Arctic Ocean, followed by photoreduction and emission...
Published in: | Nature Communications |
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Online Access: | https://pure.au.dk/portal/en/publications/6a06a316-9f70-44b7-87cd-b28d64c30f41 https://doi.org/10.1038/s41467-022-32440-8 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/6a06a316-9f70-44b7-87cd-b28d64c30f41 2024-05-19T07:33:27+00:00 Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere Araujo, Beatriz Ferreira Osterwalder, Stefan Szponar, Natalie Lee, Domenica Petrova, Mariia V. Pernov, Jakob Boyd Ahmed, Shaddy Heimbürger-Boavida, Lars Eric Laffont, Laure Teisserenc, Roman Tananaev, Nikita Nordstrom, Claus Magand, Olivier Stupple, Geoff Skov, Henrik Steffen, Alexandra Bergquist, Bridget Pfaffhuber, Katrine Aspmo Thomas, Jennie L. Scheper, Simon Petäjä, Tuukka Dommergue, Aurélien Sonke, Jeroen E. 2022-12 https://pure.au.dk/portal/en/publications/6a06a316-9f70-44b7-87cd-b28d64c30f41 https://doi.org/10.1038/s41467-022-32440-8 eng eng https://pure.au.dk/portal/en/publications/6a06a316-9f70-44b7-87cd-b28d64c30f41 info:eu-repo/semantics/openAccess Araujo , B F , Osterwalder , S , Szponar , N , Lee , D , Petrova , M V , Pernov , J B , Ahmed , S , Heimbürger-Boavida , L E , Laffont , L , Teisserenc , R , Tananaev , N , Nordstrom , C , Magand , O , Stupple , G , Skov , H , Steffen , A , Bergquist , B , Pfaffhuber , K A , Thomas , J L , Scheper , S , Petäjä , T , Dommergue , A & Sonke , J E 2022 , ' Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere ' , Nature Communications , vol. 13 , no. 1 , 4956 . https://doi.org/10.1038/s41467-022-32440-8 article 2022 ftuniaarhuspubl https://doi.org/10.1038/s41467-022-32440-8 2024-05-01T23:48:43Z During Arctic springtime, halogen radicals oxidize atmospheric elemental mercury (Hg 0 ), which deposits to the cryosphere. This is followed by a summertime atmospheric Hg 0 peak that is thought to result mostly from terrestrial Hg inputs to the Arctic Ocean, followed by photoreduction and emission to air. The large terrestrial Hg contribution to the Arctic Ocean and global atmosphere has raised concern over the potential release of permafrost Hg, via rivers and coastal erosion, with Arctic warming. Here we investigate Hg isotope variability of Arctic atmospheric, marine, and terrestrial Hg. We observe highly characteristic Hg isotope signatures during the summertime peak that reflect re-emission of Hg deposited to the cryosphere during spring. Air mass back trajectories support a cryospheric Hg emission source but no major terrestrial source. This implies that terrestrial Hg inputs to the Arctic Ocean remain in the marine ecosystem, without substantial loss to the global atmosphere, but with possible effects on food webs. Article in Journal/Newspaper Arctic Arctic Arctic Ocean permafrost The Cryosphere Aarhus University: Research Nature Communications 13 1 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
During Arctic springtime, halogen radicals oxidize atmospheric elemental mercury (Hg 0 ), which deposits to the cryosphere. This is followed by a summertime atmospheric Hg 0 peak that is thought to result mostly from terrestrial Hg inputs to the Arctic Ocean, followed by photoreduction and emission to air. The large terrestrial Hg contribution to the Arctic Ocean and global atmosphere has raised concern over the potential release of permafrost Hg, via rivers and coastal erosion, with Arctic warming. Here we investigate Hg isotope variability of Arctic atmospheric, marine, and terrestrial Hg. We observe highly characteristic Hg isotope signatures during the summertime peak that reflect re-emission of Hg deposited to the cryosphere during spring. Air mass back trajectories support a cryospheric Hg emission source but no major terrestrial source. This implies that terrestrial Hg inputs to the Arctic Ocean remain in the marine ecosystem, without substantial loss to the global atmosphere, but with possible effects on food webs. |
format |
Article in Journal/Newspaper |
author |
Araujo, Beatriz Ferreira Osterwalder, Stefan Szponar, Natalie Lee, Domenica Petrova, Mariia V. Pernov, Jakob Boyd Ahmed, Shaddy Heimbürger-Boavida, Lars Eric Laffont, Laure Teisserenc, Roman Tananaev, Nikita Nordstrom, Claus Magand, Olivier Stupple, Geoff Skov, Henrik Steffen, Alexandra Bergquist, Bridget Pfaffhuber, Katrine Aspmo Thomas, Jennie L. Scheper, Simon Petäjä, Tuukka Dommergue, Aurélien Sonke, Jeroen E. |
spellingShingle |
Araujo, Beatriz Ferreira Osterwalder, Stefan Szponar, Natalie Lee, Domenica Petrova, Mariia V. Pernov, Jakob Boyd Ahmed, Shaddy Heimbürger-Boavida, Lars Eric Laffont, Laure Teisserenc, Roman Tananaev, Nikita Nordstrom, Claus Magand, Olivier Stupple, Geoff Skov, Henrik Steffen, Alexandra Bergquist, Bridget Pfaffhuber, Katrine Aspmo Thomas, Jennie L. Scheper, Simon Petäjä, Tuukka Dommergue, Aurélien Sonke, Jeroen E. Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere |
author_facet |
Araujo, Beatriz Ferreira Osterwalder, Stefan Szponar, Natalie Lee, Domenica Petrova, Mariia V. Pernov, Jakob Boyd Ahmed, Shaddy Heimbürger-Boavida, Lars Eric Laffont, Laure Teisserenc, Roman Tananaev, Nikita Nordstrom, Claus Magand, Olivier Stupple, Geoff Skov, Henrik Steffen, Alexandra Bergquist, Bridget Pfaffhuber, Katrine Aspmo Thomas, Jennie L. Scheper, Simon Petäjä, Tuukka Dommergue, Aurélien Sonke, Jeroen E. |
author_sort |
Araujo, Beatriz Ferreira |
title |
Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere |
title_short |
Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere |
title_full |
Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere |
title_fullStr |
Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere |
title_full_unstemmed |
Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere |
title_sort |
mercury isotope evidence for arctic summertime re-emission of mercury from the cryosphere |
publishDate |
2022 |
url |
https://pure.au.dk/portal/en/publications/6a06a316-9f70-44b7-87cd-b28d64c30f41 https://doi.org/10.1038/s41467-022-32440-8 |
genre |
Arctic Arctic Arctic Ocean permafrost The Cryosphere |
genre_facet |
Arctic Arctic Arctic Ocean permafrost The Cryosphere |
op_source |
Araujo , B F , Osterwalder , S , Szponar , N , Lee , D , Petrova , M V , Pernov , J B , Ahmed , S , Heimbürger-Boavida , L E , Laffont , L , Teisserenc , R , Tananaev , N , Nordstrom , C , Magand , O , Stupple , G , Skov , H , Steffen , A , Bergquist , B , Pfaffhuber , K A , Thomas , J L , Scheper , S , Petäjä , T , Dommergue , A & Sonke , J E 2022 , ' Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere ' , Nature Communications , vol. 13 , no. 1 , 4956 . https://doi.org/10.1038/s41467-022-32440-8 |
op_relation |
https://pure.au.dk/portal/en/publications/6a06a316-9f70-44b7-87cd-b28d64c30f41 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-022-32440-8 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1799471532692471808 |