A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island
Although essential to fully understand the cycling of mercury at the global scale, mercury species records in the Southern Hemisphere are scarce. Under the framework of the Global Mercury Observation System (GMOS) project, a monitoring station has been set up on Amsterdam Island (37°48´ S, 77°34´ E)...
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ftdoajarticles:oai:doaj.org/article:1f4c028192704e4c8714286a8abf2a8f 2023-05-15T13:22:26+02:00 A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island H. Angot M. Barret O. Magand M. Ramonet A. Dommergue 2014-10-01T00:00:00Z https://doi.org/10.5194/acp-14-11461-2014 https://doaj.org/article/1f4c028192704e4c8714286a8abf2a8f EN eng Copernicus Publications http://www.atmos-chem-phys.net/14/11461/2014/acp-14-11461-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-11461-2014 https://doaj.org/article/1f4c028192704e4c8714286a8abf2a8f Atmospheric Chemistry and Physics, Vol 14, Iss 20, Pp 11461-11473 (2014) Physics QC1-999 Chemistry QD1-999 article 2014 ftdoajarticles https://doi.org/10.5194/acp-14-11461-2014 2022-12-31T11:50:12Z Although essential to fully understand the cycling of mercury at the global scale, mercury species records in the Southern Hemisphere are scarce. Under the framework of the Global Mercury Observation System (GMOS) project, a monitoring station has been set up on Amsterdam Island (37°48´ S, 77°34´ E) in the remote southern Indian Ocean. For the first time in the Southern Hemisphere, a 2-year record of gaseous elemental mercury (GEM), reactive gaseous mercury (RGM) and particle-bound mercury (PBM) is presented. GEM concentrations were remarkably steady (1.03 ± 0.08 ng m −3 ) while RGM and PBM concentrations were very low and exhibited a strong variability (mean: 0.34 pg m −3 , range: < detection limit–4.07 pg m −3 and mean: 0.67 pg m −3 , range: < detection limit–12.67 pg m −3 , respectively). Despite the remoteness of the island, wind sector analysis, air mass back trajectories and the observation of radonic storms highlighted a long-range contribution from the southern African continent to the GEM and PBM budgets from July to September during the biomass burning season. Low concentrations of GEM were associated with southerly polar and marine air masses from the remote southern Indian Ocean. This unique data set provides new baseline GEM concentrations in the Southern Hemisphere midlatitudes while mercury speciation along with upcoming wet deposition data will help to improve our understanding of the mercury cycle in the marine boundary layer. Article in Journal/Newspaper Amsterdam Island Directory of Open Access Journals: DOAJ Articles Indian Atmospheric Chemistry and Physics 14 20 11461 11473 |
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Directory of Open Access Journals: DOAJ Articles |
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topic |
Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 H. Angot M. Barret O. Magand M. Ramonet A. Dommergue A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Although essential to fully understand the cycling of mercury at the global scale, mercury species records in the Southern Hemisphere are scarce. Under the framework of the Global Mercury Observation System (GMOS) project, a monitoring station has been set up on Amsterdam Island (37°48´ S, 77°34´ E) in the remote southern Indian Ocean. For the first time in the Southern Hemisphere, a 2-year record of gaseous elemental mercury (GEM), reactive gaseous mercury (RGM) and particle-bound mercury (PBM) is presented. GEM concentrations were remarkably steady (1.03 ± 0.08 ng m −3 ) while RGM and PBM concentrations were very low and exhibited a strong variability (mean: 0.34 pg m −3 , range: < detection limit–4.07 pg m −3 and mean: 0.67 pg m −3 , range: < detection limit–12.67 pg m −3 , respectively). Despite the remoteness of the island, wind sector analysis, air mass back trajectories and the observation of radonic storms highlighted a long-range contribution from the southern African continent to the GEM and PBM budgets from July to September during the biomass burning season. Low concentrations of GEM were associated with southerly polar and marine air masses from the remote southern Indian Ocean. This unique data set provides new baseline GEM concentrations in the Southern Hemisphere midlatitudes while mercury speciation along with upcoming wet deposition data will help to improve our understanding of the mercury cycle in the marine boundary layer. |
format |
Article in Journal/Newspaper |
author |
H. Angot M. Barret O. Magand M. Ramonet A. Dommergue |
author_facet |
H. Angot M. Barret O. Magand M. Ramonet A. Dommergue |
author_sort |
H. Angot |
title |
A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island |
title_short |
A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island |
title_full |
A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island |
title_fullStr |
A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island |
title_full_unstemmed |
A 2-year record of atmospheric mercury species at a background Southern Hemisphere station on Amsterdam Island |
title_sort |
2-year record of atmospheric mercury species at a background southern hemisphere station on amsterdam island |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/acp-14-11461-2014 https://doaj.org/article/1f4c028192704e4c8714286a8abf2a8f |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Amsterdam Island |
genre_facet |
Amsterdam Island |
op_source |
Atmospheric Chemistry and Physics, Vol 14, Iss 20, Pp 11461-11473 (2014) |
op_relation |
http://www.atmos-chem-phys.net/14/11461/2014/acp-14-11461-2014.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-14-11461-2014 https://doaj.org/article/1f4c028192704e4c8714286a8abf2a8f |
op_doi |
https://doi.org/10.5194/acp-14-11461-2014 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
14 |
container_issue |
20 |
container_start_page |
11461 |
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11473 |
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1766364924431302656 |