Large mercury release from the Greenland Ice Sheet invalidated

Christian Juncher Jørgensen; Jens Søndergaard; Martin Mørk Larsen; Kristian Kjellerup Kjeldsen; Diogo Rosa; Sarah Elise Sapper; Lars Eric Heimbürger-Boavida; Stephen G. Kohler; Feiyue Wang; Zhiyuan Gao; Debbie Armstrong; Christian Nyrop Albers

doi:10.1126/sciadv.adi7760

Large mercury release from the Greenland Ice Sheet invalidated

Christian Juncher Jørgensen^*, Jens Søndergaard, Martin Mørk Larsen, Kristian Kjellerup Kjeldsen, Diogo Rosa, Sarah Elise Sapper, Lars Eric Heimbürger-Boavida, Stephen G. Kohler, Feiyue Wang, Zhiyuan Gao, Debbie Armstrong, Christian Nyrop Albers

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

6 Citationer (Scopus)

Abstract

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.

Originalsprog	Engelsk
Tidsskrift	Science Advances
Vol/bind	10
Nummer	4
Antal sider	8
ISSN	2375-2548
DOI	https://doi.org/10.1126/sciadv.adi7760
Status	Udgivet - jan. 2024

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title = "Large mercury release from the Greenland Ice Sheet invalidated",

abstract = "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.",

author = "J{\o}rgensen, {Christian Juncher} and Jens S{\o}ndergaard and Larsen, {Martin M{\o}rk} and Kjeldsen, {Kristian Kjellerup} and Diogo Rosa and Sapper, {Sarah Elise} and Heimb{\"u}rger-Boavida, {Lars Eric} and Kohler, {Stephen G.} and Feiyue Wang and Zhiyuan Gao and Debbie Armstrong and Albers, {Christian Nyrop}",

year = "2024",

month = jan,

doi = "10.1126/sciadv.adi7760",

language = "English",

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journal = "Science Advances",

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T1 - Large mercury release from the Greenland Ice Sheet invalidated

AU - Jørgensen, Christian Juncher

AU - Søndergaard, Jens

AU - Larsen, Martin Mørk

AU - Kjeldsen, Kristian Kjellerup

AU - Rosa, Diogo

AU - Sapper, Sarah Elise

AU - Heimbürger-Boavida, Lars Eric

AU - Kohler, Stephen G.

AU - Wang, Feiyue

AU - Gao, Zhiyuan

AU - Armstrong, Debbie

AU - Albers, Christian Nyrop

PY - 2024/1

Y1 - 2024/1

N2 - 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.

AB - 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.

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U2 - 10.1126/sciadv.adi7760

DO - 10.1126/sciadv.adi7760

M3 - Journal article

C2 - 38277451

AN - SCOPUS:85183592292

SN - 2375-2548

VL - 10

JO - Science Advances

JF - Science Advances

IS - 4

ER -

Large mercury release from the Greenland Ice Sheet invalidated

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