Large mercury release from the Greenland Ice Sheet invalidated
The major input of mercury (Hg) to the Arctic is normally ascribed to long-range transport of anthropogenic Hg emissions. Recently, alarming concentrations of Hg in meltwater from the Greenland Ice Sheet (GrIS) were reported with bedrock as the proposed source. Reported Hg concentrations were 100 to...
Published in: | Science Advances |
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2024
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Online Access: | https://pure.au.dk/portal/en/publications/f06784aa-3135-4731-9ee4-907b4061bea5 https://doi.org/10.1126/sciadv.adi7760 http://www.scopus.com/inward/record.url?scp=85183592292&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/f06784aa-3135-4731-9ee4-907b4061bea5 2024-06-23T07:50:18+00:00 Large mercury release from the Greenland Ice Sheet invalidated Jørgensen, Christian Juncher Søndergaard, Jens Larsen, Martin Mørk Kjeldsen, Kristian Kjellerup Rosa, Diogo Sapper, Sarah Elise Heimbürger-Boavida, Lars Eric Kohler, Stephen G. Wang, Feiyue Gao, Zhiyuan Armstrong, Debbie Albers, Christian Nyrop 2024-01 https://pure.au.dk/portal/en/publications/f06784aa-3135-4731-9ee4-907b4061bea5 https://doi.org/10.1126/sciadv.adi7760 http://www.scopus.com/inward/record.url?scp=85183592292&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/f06784aa-3135-4731-9ee4-907b4061bea5 info:eu-repo/semantics/openAccess Jørgensen , C J , Søndergaard , J , Larsen , M M , Kjeldsen , K K , Rosa , D , Sapper , S E , Heimbürger-Boavida , L E , Kohler , S G , Wang , F , Gao , Z , Armstrong , D & Albers , C N 2024 , ' Large mercury release from the Greenland Ice Sheet invalidated ' , Science Advances , vol. 10 , no. 4 . https://doi.org/10.1126/sciadv.adi7760 article 2024 ftuniaarhuspubl https://doi.org/10.1126/sciadv.adi7760 2024-06-04T14:45:19Z The major input of mercury (Hg) to the Arctic is normally ascribed to long-range transport of anthropogenic Hg emissions. Recently, alarming concentrations of Hg in meltwater from the Greenland Ice Sheet (GrIS) were reported with bedrock as the proposed source. Reported Hg concentrations were 100 to 1000 times higher than in known freshwater systems of Greenland, calling for independent validation of the extraordinary concentrations and conclusions. Here, we present measurements of Hg at 21 glacial outlets in West Greenland showing that extreme Hg concentrations cannot be reproduced. In contrast, we find that meltwater from below the GrIS is very low in Hg, has minor implications for the global Hg budget, and pose only a very limited risk for local communities and the natural environment of Greenland. Article in Journal/Newspaper Arctic Greenland Ice Sheet Aarhus University: Research Arctic Greenland Science Advances 10 4 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
The major input of mercury (Hg) to the Arctic is normally ascribed to long-range transport of anthropogenic Hg emissions. Recently, alarming concentrations of Hg in meltwater from the Greenland Ice Sheet (GrIS) were reported with bedrock as the proposed source. Reported Hg concentrations were 100 to 1000 times higher than in known freshwater systems of Greenland, calling for independent validation of the extraordinary concentrations and conclusions. Here, we present measurements of Hg at 21 glacial outlets in West Greenland showing that extreme Hg concentrations cannot be reproduced. In contrast, we find that meltwater from below the GrIS is very low in Hg, has minor implications for the global Hg budget, and pose only a very limited risk for local communities and the natural environment of Greenland. |
format |
Article in Journal/Newspaper |
author |
Jørgensen, Christian Juncher Søndergaard, Jens Larsen, Martin Mørk Kjeldsen, Kristian Kjellerup Rosa, Diogo Sapper, Sarah Elise Heimbürger-Boavida, Lars Eric Kohler, Stephen G. Wang, Feiyue Gao, Zhiyuan Armstrong, Debbie Albers, Christian Nyrop |
spellingShingle |
Jørgensen, Christian Juncher Søndergaard, Jens Larsen, Martin Mørk Kjeldsen, Kristian Kjellerup Rosa, Diogo Sapper, Sarah Elise Heimbürger-Boavida, Lars Eric Kohler, Stephen G. Wang, Feiyue Gao, Zhiyuan Armstrong, Debbie Albers, Christian Nyrop Large mercury release from the Greenland Ice Sheet invalidated |
author_facet |
Jørgensen, Christian Juncher Søndergaard, Jens Larsen, Martin Mørk Kjeldsen, Kristian Kjellerup Rosa, Diogo Sapper, Sarah Elise Heimbürger-Boavida, Lars Eric Kohler, Stephen G. Wang, Feiyue Gao, Zhiyuan Armstrong, Debbie Albers, Christian Nyrop |
author_sort |
Jørgensen, Christian Juncher |
title |
Large mercury release from the Greenland Ice Sheet invalidated |
title_short |
Large mercury release from the Greenland Ice Sheet invalidated |
title_full |
Large mercury release from the Greenland Ice Sheet invalidated |
title_fullStr |
Large mercury release from the Greenland Ice Sheet invalidated |
title_full_unstemmed |
Large mercury release from the Greenland Ice Sheet invalidated |
title_sort |
large mercury release from the greenland ice sheet invalidated |
publishDate |
2024 |
url |
https://pure.au.dk/portal/en/publications/f06784aa-3135-4731-9ee4-907b4061bea5 https://doi.org/10.1126/sciadv.adi7760 http://www.scopus.com/inward/record.url?scp=85183592292&partnerID=8YFLogxK |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet |
genre_facet |
Arctic Greenland Ice Sheet |
op_source |
Jørgensen , C J , Søndergaard , J , Larsen , M M , Kjeldsen , K K , Rosa , D , Sapper , S E , Heimbürger-Boavida , L E , Kohler , S G , Wang , F , Gao , Z , Armstrong , D & Albers , C N 2024 , ' Large mercury release from the Greenland Ice Sheet invalidated ' , Science Advances , vol. 10 , no. 4 . https://doi.org/10.1126/sciadv.adi7760 |
op_relation |
https://pure.au.dk/portal/en/publications/f06784aa-3135-4731-9ee4-907b4061bea5 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1126/sciadv.adi7760 |
container_title |
Science Advances |
container_volume |
10 |
container_issue |
4 |
_version_ |
1802641164707299328 |