Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer
International audience Size-segregated aerosol sulfate concentrations were measured on board the Canadian Coast Guard Ship (CCGS) Amundsen in the Arctic during July 2014. The objective of this study was to utilize the isotopic composition of sulfate to address the contribution of anthropogenic and b...
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ftuniversailles:oai:HAL:insu-01267733v1 2024-05-19T07:35:03+00:00 Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer Ghahremaninezhad, Roghayeh Norman, Ann-Lise Abbatt, Jonathan P. D. Levasseur, Maurice Thomas, Jennie L. Department of Physics and Astronomy Calgary University of Calgary Department of Chemistry University of Toronto University of Toronto Department of Biology Québec Université Laval Québec (ULaval) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) NSERC 2016-02 https://insu.hal.science/insu-01267733 https://insu.hal.science/insu-01267733/document https://insu.hal.science/insu-01267733/file/acp-16-5191-2016.pdf https://doi.org/10.5194/acp-16-5191-2016 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-16-5191-2016 insu-01267733 https://insu.hal.science/insu-01267733 https://insu.hal.science/insu-01267733/document https://insu.hal.science/insu-01267733/file/acp-16-5191-2016.pdf doi:10.5194/acp-16-5191-2016 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-01267733 Atmospheric Chemistry and Physics, 2016, 16, pp.5191-5202. ⟨10.5194/acp-16-5191-2016⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2016 ftuniversailles https://doi.org/10.5194/acp-16-5191-2016 2024-04-25T00:35:29Z International audience Size-segregated aerosol sulfate concentrations were measured on board the Canadian Coast Guard Ship (CCGS) Amundsen in the Arctic during July 2014. The objective of this study was to utilize the isotopic composition of sulfate to address the contribution of anthropogenic and biogenic sources of aerosols to the growth of the different aerosol size fractions in the Arctic atmosphere. Non-sea salt sulfate is divided into biogenic and anthropogenic sulfate using stable isotope apportionment techniques. A considerable amount of the average sulfate concentration in the fine aerosols with diameter < 0.49 μm was from biogenic sources (> 70 %) which is higher than previous Arctic studies measuring above the ocean during fall (< 15 %) (Rempillo et al., 2011) and total aerosol sulfate at higher latitudes at Alert in summer (> 30 %) (Norman et al., 1999). The anthropogenic sulfate concentration was less than biogenic sulfate, with potential sources being long range transport and, more locally, the Amundsen’s emissions. Despite attempts to minimize the influence of ship stack emissions, evidence from larger-sized particles demonstrates a contribution from local pollution. A comparison of δ34S values for SO2 and fine aerosols was used to show that gas-to-particle conversion likely occurred during most sampling periods. δ34S values for SO2 and fine aerosols were similar suggesting the same source for SO2 and aerosol sulfate, except for two samples with a relatively high anthropogenic fraction in particles < 0.49 μm in diameter (July 15–17 and 17–19). The high biogenic fraction of sulfate fine aerosol and similar isotope ratio values of these particles and SO2 emphasize the role of marine organisims (e.g. phytoplankton, algea, bacteria) in the formation of fine particles above the Arctic Ocean during the productive summer months. Article in Journal/Newspaper Arctic Arctic Ocean Phytoplankton Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Atmospheric Chemistry and Physics 16 8 5191 5202 |
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Open Polar |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Ghahremaninezhad, Roghayeh Norman, Ann-Lise Abbatt, Jonathan P. D. Levasseur, Maurice Thomas, Jennie L. Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Size-segregated aerosol sulfate concentrations were measured on board the Canadian Coast Guard Ship (CCGS) Amundsen in the Arctic during July 2014. The objective of this study was to utilize the isotopic composition of sulfate to address the contribution of anthropogenic and biogenic sources of aerosols to the growth of the different aerosol size fractions in the Arctic atmosphere. Non-sea salt sulfate is divided into biogenic and anthropogenic sulfate using stable isotope apportionment techniques. A considerable amount of the average sulfate concentration in the fine aerosols with diameter < 0.49 μm was from biogenic sources (> 70 %) which is higher than previous Arctic studies measuring above the ocean during fall (< 15 %) (Rempillo et al., 2011) and total aerosol sulfate at higher latitudes at Alert in summer (> 30 %) (Norman et al., 1999). The anthropogenic sulfate concentration was less than biogenic sulfate, with potential sources being long range transport and, more locally, the Amundsen’s emissions. Despite attempts to minimize the influence of ship stack emissions, evidence from larger-sized particles demonstrates a contribution from local pollution. A comparison of δ34S values for SO2 and fine aerosols was used to show that gas-to-particle conversion likely occurred during most sampling periods. δ34S values for SO2 and fine aerosols were similar suggesting the same source for SO2 and aerosol sulfate, except for two samples with a relatively high anthropogenic fraction in particles < 0.49 μm in diameter (July 15–17 and 17–19). The high biogenic fraction of sulfate fine aerosol and similar isotope ratio values of these particles and SO2 emphasize the role of marine organisims (e.g. phytoplankton, algea, bacteria) in the formation of fine particles above the Arctic Ocean during the productive summer months. |
author2 |
Department of Physics and Astronomy Calgary University of Calgary Department of Chemistry University of Toronto University of Toronto Department of Biology Québec Université Laval Québec (ULaval) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) NSERC |
format |
Article in Journal/Newspaper |
author |
Ghahremaninezhad, Roghayeh Norman, Ann-Lise Abbatt, Jonathan P. D. Levasseur, Maurice Thomas, Jennie L. |
author_facet |
Ghahremaninezhad, Roghayeh Norman, Ann-Lise Abbatt, Jonathan P. D. Levasseur, Maurice Thomas, Jennie L. |
author_sort |
Ghahremaninezhad, Roghayeh |
title |
Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer |
title_short |
Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer |
title_full |
Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer |
title_fullStr |
Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer |
title_full_unstemmed |
Biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the Arctic summer |
title_sort |
biogenic, anthropogenic, and sea salt sulfate size-segregated aerosols in the arctic summer |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://insu.hal.science/insu-01267733 https://insu.hal.science/insu-01267733/document https://insu.hal.science/insu-01267733/file/acp-16-5191-2016.pdf https://doi.org/10.5194/acp-16-5191-2016 |
genre |
Arctic Arctic Ocean Phytoplankton |
genre_facet |
Arctic Arctic Ocean Phytoplankton |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-01267733 Atmospheric Chemistry and Physics, 2016, 16, pp.5191-5202. ⟨10.5194/acp-16-5191-2016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-16-5191-2016 insu-01267733 https://insu.hal.science/insu-01267733 https://insu.hal.science/insu-01267733/document https://insu.hal.science/insu-01267733/file/acp-16-5191-2016.pdf doi:10.5194/acp-16-5191-2016 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-16-5191-2016 |
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Atmospheric Chemistry and Physics |
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16 |
container_issue |
8 |
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5191 |
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5202 |
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