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...
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ftchalmersuniv:oai:research.chalmers.se:243669 2023-05-15T14:04:48+02:00 Chemical cycling and deposition of atmospheric mercury in polar regions: review of recent measurements and comparison with models Angot, H. Dastoor, A. De Simone, F. Gårdfeldt, Katarina Gencarelli, C. N. Hedgecock, I. M. Langer, Sarka Magand, O. Nerentorp, Michelle Nordstrom, C. Pfaffhuber, K. A. Pirrone, N. Ryjkov, A. Selin, N. E. Skov, H. Song, S. J. Sprovieri, F. Steffen, A. Toyota, K. Travnikov, O. Yang, X. Dommergue, A. 2016 text https://doi.org/10.5194/acp-16-10735-2016 https://research.chalmers.se/en/publication/243669 unknown http://dx.doi.org/10.5194/acp-16-10735-2016 https://research.chalmers.se/en/publication/243669 Earth and Related Environmental Sciences 2016 ftchalmersuniv https://doi.org/10.5194/acp-16-10735-2016 2022-12-11T07:06:37Z 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 inter-annual variability are appropriately represented in the models and identifies research gaps in our understanding of the atmospheric Hg cycling in high latitudes. Other/Unknown Material Antarc* Antarctic Antarctica Arctic Ice Sheet Chalmers University of Technology: Chalmers research Antarctic Arctic East Antarctic Ice Sheet Atmospheric Chemistry and Physics 16 16 10735 10763 |
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Open Polar |
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Chalmers University of Technology: Chalmers research |
op_collection_id |
ftchalmersuniv |
language |
unknown |
topic |
Earth and Related Environmental Sciences |
spellingShingle |
Earth and Related Environmental Sciences Angot, H. Dastoor, A. De Simone, F. Gårdfeldt, Katarina Gencarelli, C. N. Hedgecock, I. M. Langer, Sarka Magand, O. Nerentorp, Michelle Nordstrom, C. Pfaffhuber, K. A. Pirrone, N. Ryjkov, A. Selin, N. E. Skov, H. Song, S. J. Sprovieri, F. Steffen, A. Toyota, K. Travnikov, O. Yang, X. Dommergue, A. Chemical cycling and deposition of atmospheric mercury in polar regions: review of recent measurements and comparison with models |
topic_facet |
Earth and Related Environmental Sciences |
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 inter-annual variability are appropriately represented in the models and identifies research gaps in our understanding of the atmospheric Hg cycling in high latitudes. |
author |
Angot, H. Dastoor, A. De Simone, F. Gårdfeldt, Katarina Gencarelli, C. N. Hedgecock, I. M. Langer, Sarka Magand, O. Nerentorp, Michelle Nordstrom, C. Pfaffhuber, K. A. Pirrone, N. Ryjkov, A. Selin, N. E. Skov, H. Song, S. J. Sprovieri, F. Steffen, A. Toyota, K. Travnikov, O. Yang, X. Dommergue, A. |
author_facet |
Angot, H. Dastoor, A. De Simone, F. Gårdfeldt, Katarina Gencarelli, C. N. Hedgecock, I. M. Langer, Sarka Magand, O. Nerentorp, Michelle Nordstrom, C. Pfaffhuber, K. A. Pirrone, N. Ryjkov, A. Selin, N. E. Skov, H. Song, S. J. Sprovieri, F. Steffen, A. Toyota, K. Travnikov, O. Yang, X. Dommergue, A. |
author_sort |
Angot, H. |
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://doi.org/10.5194/acp-16-10735-2016 https://research.chalmers.se/en/publication/243669 |
geographic |
Antarctic Arctic East Antarctic Ice Sheet |
geographic_facet |
Antarctic Arctic East Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica Arctic Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Arctic Ice Sheet |
op_relation |
http://dx.doi.org/10.5194/acp-16-10735-2016 https://research.chalmers.se/en/publication/243669 |
op_doi |
https://doi.org/10.5194/acp-16-10735-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
16 |
container_start_page |
10735 |
op_container_end_page |
10763 |
_version_ |
1766276145561468928 |