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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2018
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ftmit:oai:dspace.mit.edu:1721.1/113835 2023-06-11T04:05:38+02:00 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 Gårdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Skov, Henrik Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien Selin, Noelle E Song, Shaojie Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Institute for Data, Systems, and Society Selin, Noelle E Song, Shaojie 2018-02-16T17:18:17Z application/pdf http://hdl.handle.net/1721.1/113835 unknown Copernicus Publications http://dx.doi.org/10.5194/ACP-16-10735-2016 Atmospheric Chemistry and Physics 1680-7324 1680-7316 http://hdl.handle.net/1721.1/113835 Angot, Hélène et al. “Chemical Cycling and Deposition of Atmospheric Mercury in Polar Regions: Review of Recent Measurements and Comparison with Models.” Atmospheric Chemistry and Physics 16, 16 (August 2016): 10735–10763 © 2016 The Author(s) orcid:0000-0002-6396-5622 orcid:0000-0001-6395-7422 Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/ Copernicus Publications Article http://purl.org/eprint/type/JournalArticle 2018 ftmit https://doi.org/10.5194/ACP-16-10735-2016 2023-05-29T08:30:20Z 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. National Science Foundation (U.S.) (Grant 1053648) Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Ice Sheet DSpace@MIT (Massachusetts Institute of Technology) Arctic Antarctic East Antarctic Ice Sheet Atmospheric Chemistry and Physics 16 16 10735 10763 |
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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. National Science Foundation (U.S.) (Grant 1053648) |
author2 |
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Institute for Data, Systems, and Society Selin, Noelle E Song, Shaojie |
format |
Article in Journal/Newspaper |
author |
Angot, Hélène Dastoor, Ashu De Simone, Francesco Gårdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Skov, Henrik Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien Selin, Noelle E Song, Shaojie |
spellingShingle |
Angot, Hélène Dastoor, Ashu De Simone, Francesco Gårdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Skov, Henrik Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien Selin, Noelle E Song, Shaojie 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 Gårdfeldt, Katarina Gencarelli, Christian N. Hedgecock, Ian M. Langer, Sarka Magand, Olivier Mastromonaco, Michelle N. Nordstrøm, Claus Pfaffhuber, Katrine A. Pirrone, Nicola Ryjkov, Andrei Skov, Henrik Sprovieri, Francesca Steffen, Alexandra Toyota, Kenjiro Travnikov, Oleg Yang, Xin Dommergue, Aurélien Selin, Noelle E Song, Shaojie |
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 |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
http://hdl.handle.net/1721.1/113835 |
geographic |
Arctic Antarctic East Antarctic Ice Sheet |
geographic_facet |
Arctic Antarctic East Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica Arctic Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Arctic Ice Sheet |
op_source |
Copernicus Publications |
op_relation |
http://dx.doi.org/10.5194/ACP-16-10735-2016 Atmospheric Chemistry and Physics 1680-7324 1680-7316 http://hdl.handle.net/1721.1/113835 Angot, Hélène et al. “Chemical Cycling and Deposition of Atmospheric Mercury in Polar Regions: Review of Recent Measurements and Comparison with Models.” Atmospheric Chemistry and Physics 16, 16 (August 2016): 10735–10763 © 2016 The Author(s) orcid:0000-0002-6396-5622 orcid:0000-0001-6395-7422 |
op_rights |
Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/ |
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 |
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1768377195990876160 |