Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017
Special issue Research results from the 14th International Conference on Mercury as a Global Pollutant (ICMGP 2019), MercOx project, and iGOSP and iCUPE projects of ERA-PLANET in support of the Minamata Convention on Mercury (ACP/AMT inter-journal SI).-- 13 pages, 9 figures, 1 table Mercury is ubiqu...
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European Geosciences Union
2020
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Online Access: | http://hdl.handle.net/10261/227481 https://doi.org/10.5194/acp-20-13253-2020 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100011033 |
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ftcsic:oai:digital.csic.es:10261/227481 2024-02-11T10:01:42+01:00 Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017 Skov, Henrik Hjorth, J. Nordstrøm, Claus Jensen, Bjarne Christoffersen, Christel Bech Poulsen, Maria Baldtzer Liisberg, Jesper Beddows, D.C.S. Dall'Osto, Manuel Christensen, Jesper Heile Danish Environmental Protection Agency European Commission Agencia Estatal de Investigación (España) 2020-11 http://hdl.handle.net/10261/227481 https://doi.org/10.5194/acp-20-13253-2020 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100011033 en eng European Geosciences Union #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/H2020/689443 Publisher's version https://doi.org/10.5194/acp-20-13253-2020 Sí Atmospheric Chemistry and Physics 20: 13253-13265 (2020) 1680-7316 CEX2019-000928-S http://hdl.handle.net/10261/227481 doi:10.5194/acp-20-13253-2020 1680-7324 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100011033 open artículo http://purl.org/coar/resource_type/c_6501 2020 ftcsic https://doi.org/10.5194/acp-20-13253-202010.13039/50110000078010.13039/501100011033 2024-01-16T11:01:44Z Special issue Research results from the 14th International Conference on Mercury as a Global Pollutant (ICMGP 2019), MercOx project, and iGOSP and iCUPE projects of ERA-PLANET in support of the Minamata Convention on Mercury (ACP/AMT inter-journal SI).-- 13 pages, 9 figures, 1 table Mercury is ubiquitous in the atmosphere, and atmospheric transport is an important source for this element in the Arctic. Measurements of gaseous elemental mercury (GEM) have been carried out at Villum Research Station (Villum) at Station Nord, situated in northern Greenland. The measurements cover the period 1999–2017, with a gap in the data for the period 2003–2008 (for a total of 11 years). The measurements were compared with model results from the Danish Eulerian Hemispheric Model (DEHM) that describes the contribution from direct anthropogenic transport, marine emissions and general background concentration. The percentage of time spent over different surfaces was calculated by back-trajectory analysis, and the reaction kinetics were determined by a comparison with ozone. The GEM measurements were analysed for trends, both seasonal and annual. The only significant trends found were negative ones for the winter and autumn months. Comparison of the measurements to simulations using the Danish Eulerian Hemispheric Model (DEHM) indicated that direct transport of anthropogenic emissions of mercury accounts for between 14 % and 17 % of the measured mercury. Analysis of the kinetics of the observed atmospheric mercury depletion events (AMDEs) confirms the results of a previous study at Villum of the competing reactions of GEM and ozone with Br, which suggests that the lifetime of GEM is about a month. However, a GEM lifetime of 12 months gave the best agreement between the model and measurements. The chemical lifetime is shorter, and thus, the apparent lifetime appears to be the result of deposition followed by reduction and re-emission; for this reason, the term “relaxation time” is preferred to “lifetime” for GEM. The relaxation ... Article in Journal/Newspaper Arctic Greenland North Greenland Digital.CSIC (Spanish National Research Council) Arctic Greenland Station Nord ENVELOPE(-16.663,-16.663,81.599,81.599) Atmospheric Chemistry and Physics 20 21 13253 13265 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
description |
Special issue Research results from the 14th International Conference on Mercury as a Global Pollutant (ICMGP 2019), MercOx project, and iGOSP and iCUPE projects of ERA-PLANET in support of the Minamata Convention on Mercury (ACP/AMT inter-journal SI).-- 13 pages, 9 figures, 1 table Mercury is ubiquitous in the atmosphere, and atmospheric transport is an important source for this element in the Arctic. Measurements of gaseous elemental mercury (GEM) have been carried out at Villum Research Station (Villum) at Station Nord, situated in northern Greenland. The measurements cover the period 1999–2017, with a gap in the data for the period 2003–2008 (for a total of 11 years). The measurements were compared with model results from the Danish Eulerian Hemispheric Model (DEHM) that describes the contribution from direct anthropogenic transport, marine emissions and general background concentration. The percentage of time spent over different surfaces was calculated by back-trajectory analysis, and the reaction kinetics were determined by a comparison with ozone. The GEM measurements were analysed for trends, both seasonal and annual. The only significant trends found were negative ones for the winter and autumn months. Comparison of the measurements to simulations using the Danish Eulerian Hemispheric Model (DEHM) indicated that direct transport of anthropogenic emissions of mercury accounts for between 14 % and 17 % of the measured mercury. Analysis of the kinetics of the observed atmospheric mercury depletion events (AMDEs) confirms the results of a previous study at Villum of the competing reactions of GEM and ozone with Br, which suggests that the lifetime of GEM is about a month. However, a GEM lifetime of 12 months gave the best agreement between the model and measurements. The chemical lifetime is shorter, and thus, the apparent lifetime appears to be the result of deposition followed by reduction and re-emission; for this reason, the term “relaxation time” is preferred to “lifetime” for GEM. The relaxation ... |
author2 |
Danish Environmental Protection Agency European Commission Agencia Estatal de Investigación (España) |
format |
Article in Journal/Newspaper |
author |
Skov, Henrik Hjorth, J. Nordstrøm, Claus Jensen, Bjarne Christoffersen, Christel Bech Poulsen, Maria Baldtzer Liisberg, Jesper Beddows, D.C.S. Dall'Osto, Manuel Christensen, Jesper Heile |
spellingShingle |
Skov, Henrik Hjorth, J. Nordstrøm, Claus Jensen, Bjarne Christoffersen, Christel Bech Poulsen, Maria Baldtzer Liisberg, Jesper Beddows, D.C.S. Dall'Osto, Manuel Christensen, Jesper Heile Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017 |
author_facet |
Skov, Henrik Hjorth, J. Nordstrøm, Claus Jensen, Bjarne Christoffersen, Christel Bech Poulsen, Maria Baldtzer Liisberg, Jesper Beddows, D.C.S. Dall'Osto, Manuel Christensen, Jesper Heile |
author_sort |
Skov, Henrik |
title |
Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017 |
title_short |
Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017 |
title_full |
Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017 |
title_fullStr |
Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017 |
title_full_unstemmed |
Variability in gaseous elemental mercury at Villum Research Station, Station Nord, in North Greenland from 1999 to 2017 |
title_sort |
variability in gaseous elemental mercury at villum research station, station nord, in north greenland from 1999 to 2017 |
publisher |
European Geosciences Union |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/227481 https://doi.org/10.5194/acp-20-13253-2020 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100011033 |
long_lat |
ENVELOPE(-16.663,-16.663,81.599,81.599) |
geographic |
Arctic Greenland Station Nord |
geographic_facet |
Arctic Greenland Station Nord |
genre |
Arctic Greenland North Greenland |
genre_facet |
Arctic Greenland North Greenland |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/H2020/689443 Publisher's version https://doi.org/10.5194/acp-20-13253-2020 Sí Atmospheric Chemistry and Physics 20: 13253-13265 (2020) 1680-7316 CEX2019-000928-S http://hdl.handle.net/10261/227481 doi:10.5194/acp-20-13253-2020 1680-7324 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100011033 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/acp-20-13253-202010.13039/50110000078010.13039/501100011033 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
21 |
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13253 |
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13265 |
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1790597506825977856 |