Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models
Mercury (Hg) is a worldwide contaminant that can cause adverse health effects to wildlife and humans. While atmospheric modeling traces the link from emissions to deposition of Hg onto environmental surfaces, large uncertainties arise from our incomplete understanding of atmospheric processes (oxida...
Published in: | Atmospheric Chemistry and Physics |
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Online Access: | https://pure.au.dk/portal/da/publications/chemical-cycling-and-deposition-of-atmospheric-mercury-in-polar-regions(2a8966aa-6af3-4b03-be9d-4b01921e0894).html https://doi.org/10.5194/acp-16-10735-2016 http://www.scopus.com/inward/record.url?scp=84984871103&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/2a8966aa-6af3-4b03-be9d-4b01921e0894 2023-12-31T10:01:19+01:00 Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models Angot, Hélène Dastoor, Ashu De Simone, Francesco Gärdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Selin, Noelle E. Skov, Henrik Song, Shaojie Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien 2016-08-30 https://pure.au.dk/portal/da/publications/chemical-cycling-and-deposition-of-atmospheric-mercury-in-polar-regions(2a8966aa-6af3-4b03-be9d-4b01921e0894).html https://doi.org/10.5194/acp-16-10735-2016 http://www.scopus.com/inward/record.url?scp=84984871103&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/da/publications/chemical-cycling-and-deposition-of-atmospheric-mercury-in-polar-regions(2a8966aa-6af3-4b03-be9d-4b01921e0894).html info:eu-repo/semantics/restrictedAccess Angot , H , Dastoor , A , De Simone , F , Gärdfeldt , K , Gencarelli , C N , Hedgecock , I M , Langer , S , Magand , O , Mastromonaco , M N , Nordstrøm , C , Pfaffhuber , K A , Pirrone , N , Ryjkov , A , Selin , N E , Skov , H , Song , S , Sprovieri , F , Steffen , A , Toyota , K , Travnikov , O , Yang , X & Dommergue , A 2016 , ' Chemical cycling and deposition of atmospheric mercury in polar regions : Review of recent measurements and comparison with models ' , Atmospheric Chemistry and Physics , vol. 16 , no. 16 , pp. 10735-10763 . https://doi.org/10.5194/acp-16-10735-2016 article 2016 ftuniaarhuspubl https://doi.org/10.5194/acp-16-10735-2016 2023-12-07T00:01:36Z Mercury (Hg) is a worldwide contaminant that can cause adverse health effects to wildlife and humans. While atmospheric modeling traces the link from emissions to deposition of Hg onto environmental surfaces, large uncertainties arise from our incomplete understanding of atmospheric processes (oxidation pathways, deposition, and re-emission). Atmospheric Hg reactivity is exacerbated in high latitudes and there is still much to be learned from polar regions in terms of atmospheric processes. This paper provides a synthesis of the atmospheric Hg monitoring data available in recent years (2011-2015) in the Arctic and in Antarctica along with a comparison of these observations with numerical simulations using four cutting-edge global models. The cycle of atmospheric Hg in the Arctic and in Antarctica presents both similarities and differences. Coastal sites in the two regions are both influenced by springtime atmospheric Hg depletion events and by summertime snowpack re-emission and oceanic evasion of Hg. The cycle of atmospheric Hg differs between the two regions primarily because of their different geography. While Arctic sites are significantly influenced by northern hemispheric Hg emissions especially in winter, coastal Antarctic sites are significantly influenced by the reactivity observed on the East Antarctic ice sheet due to katabatic winds. Based on the comparison of multi-model simulations with observations, this paper discusses whether the processes that affect atmospheric Hg seasonality and interannual variability are appropriately represented in the models and identifies research gaps in our understanding of the atmospheric Hg cycling in high latitudes. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Ice Sheet Aarhus University: Research Atmospheric Chemistry and Physics 16 16 10735 10763 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Mercury (Hg) is a worldwide contaminant that can cause adverse health effects to wildlife and humans. While atmospheric modeling traces the link from emissions to deposition of Hg onto environmental surfaces, large uncertainties arise from our incomplete understanding of atmospheric processes (oxidation pathways, deposition, and re-emission). Atmospheric Hg reactivity is exacerbated in high latitudes and there is still much to be learned from polar regions in terms of atmospheric processes. This paper provides a synthesis of the atmospheric Hg monitoring data available in recent years (2011-2015) in the Arctic and in Antarctica along with a comparison of these observations with numerical simulations using four cutting-edge global models. The cycle of atmospheric Hg in the Arctic and in Antarctica presents both similarities and differences. Coastal sites in the two regions are both influenced by springtime atmospheric Hg depletion events and by summertime snowpack re-emission and oceanic evasion of Hg. The cycle of atmospheric Hg differs between the two regions primarily because of their different geography. While Arctic sites are significantly influenced by northern hemispheric Hg emissions especially in winter, coastal Antarctic sites are significantly influenced by the reactivity observed on the East Antarctic ice sheet due to katabatic winds. Based on the comparison of multi-model simulations with observations, this paper discusses whether the processes that affect atmospheric Hg seasonality and interannual variability are appropriately represented in the models and identifies research gaps in our understanding of the atmospheric Hg cycling in high latitudes. |
format |
Article in Journal/Newspaper |
author |
Angot, Hélène Dastoor, Ashu De Simone, Francesco Gärdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Selin, Noelle E. Skov, Henrik Song, Shaojie Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien |
spellingShingle |
Angot, Hélène Dastoor, Ashu De Simone, Francesco Gärdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Selin, Noelle E. Skov, Henrik Song, Shaojie Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models |
author_facet |
Angot, Hélène Dastoor, Ashu De Simone, Francesco Gärdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Selin, Noelle E. Skov, Henrik Song, Shaojie Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien |
author_sort |
Angot, Hélène |
title |
Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models |
title_short |
Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models |
title_full |
Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models |
title_fullStr |
Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models |
title_full_unstemmed |
Chemical cycling and deposition of atmospheric mercury in polar regions:Review of recent measurements and comparison with models |
title_sort |
chemical cycling and deposition of atmospheric mercury in polar regions:review of recent measurements and comparison with models |
publishDate |
2016 |
url |
https://pure.au.dk/portal/da/publications/chemical-cycling-and-deposition-of-atmospheric-mercury-in-polar-regions(2a8966aa-6af3-4b03-be9d-4b01921e0894).html https://doi.org/10.5194/acp-16-10735-2016 http://www.scopus.com/inward/record.url?scp=84984871103&partnerID=8YFLogxK |
genre |
Antarc* Antarctic Antarctica Arctic Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Arctic Ice Sheet |
op_source |
Angot , H , Dastoor , A , De Simone , F , Gärdfeldt , K , Gencarelli , C N , Hedgecock , I M , Langer , S , Magand , O , Mastromonaco , M N , Nordstrøm , C , Pfaffhuber , K A , Pirrone , N , Ryjkov , A , Selin , N E , Skov , H , Song , S , Sprovieri , F , Steffen , A , Toyota , K , Travnikov , O , Yang , X & Dommergue , A 2016 , ' Chemical cycling and deposition of atmospheric mercury in polar regions : Review of recent measurements and comparison with models ' , Atmospheric Chemistry and Physics , vol. 16 , no. 16 , pp. 10735-10763 . https://doi.org/10.5194/acp-16-10735-2016 |
op_relation |
https://pure.au.dk/portal/da/publications/chemical-cycling-and-deposition-of-atmospheric-mercury-in-polar-regions(2a8966aa-6af3-4b03-be9d-4b01921e0894).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.5194/acp-16-10735-2016 |
container_title |
Atmospheric Chemistry and Physics |
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16 |
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16 |
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10735 |
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10763 |
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