Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site
International audience Aerosol chemical composition was measured over the Atlantic Ocean in November?December 1999 and at the Finnish Antarctic research station Aboa in January 2000. The concentrations of all anthropogenic aerosol compounds decreased clearly from north to south. An anthropogenic inf...
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ftinsu:oai:HAL:hal-00303829v1 2024-02-11T09:58:07+01:00 Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site Virkkula, A. Teinilä, K. Hillamo, R. Kerminen, V.-M. Saarikoski, S. Aurela, M. Viidanoja, J. Paatero, J. Koponen, I. K. Kulmala, M. Finnish Meteorological Institute (FMI) Department Department of Chemistry Laboratory of Analytical Chemistry Department of Chemistry Copenhagen Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Aerosol and Environmental Physics Laboratory Helsinki Helsingin yliopisto = Helsingfors universitet = University of Helsinki 2006-01-10 https://hal.science/hal-00303829 https://hal.science/hal-00303829/document https://hal.science/hal-00303829/file/acpd-6-455-2006.pdf en eng HAL CCSD European Geosciences Union hal-00303829 https://hal.science/hal-00303829 https://hal.science/hal-00303829/document https://hal.science/hal-00303829/file/acpd-6-455-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00303829 Atmospheric Chemistry and Physics Discussions, 2006, 6 (1), pp.455-491 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2006 ftinsu 2024-01-17T17:27:12Z International audience Aerosol chemical composition was measured over the Atlantic Ocean in November?December 1999 and at the Finnish Antarctic research station Aboa in January 2000. The concentrations of all anthropogenic aerosol compounds decreased clearly from north to south. An anthropogenic influence was still evident in the middle of the tropical South Atlantic, background values were reached south of Cape Town. Chemical mass balance was calculated for high volume filter samples (D p <3 ?m). North of the equator 70?80% of the aerosol consisted of non-sea-salt species. The contribution of sea salt was ~25% in the polluted latitudes, >80% in the Southern Ocean, and <10% at Aboa. The contribution of organic carbon was >10% in most samples, also at Aboa. The correlation of biomass-burning-related aerosol components with 210 Pb was very high compared with that between nss calcium and 210 Pb which suggests that 210 Pb is a better tracer for biomass burning than for Saharan dust. The ratio of the two clear tracers for biomass burning, nss potassium and oxalate, was different in European and in African samples, suggesting that this ratio could be used as an indicator of biomass burning type. The concentrations of continent-related particles decreased exponentially with the distance from Africa. The shortest half-value distance, ~100 km, was for nss calcium. The half-value distance of particles that are mainly in the submicron particles was ~700±200 km. The MSA to nss sulfate ratio, R, increased faster than MSA concentration with decreasing anthropogenic influence, indicating that the R increase could largely be explained by the decrease of anthropogenic sulfate. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Aboa ENVELOPE(-13.417,-13.417,-73.050,-73.050) Antarctic Southern Ocean |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Virkkula, A. Teinilä, K. Hillamo, R. Kerminen, V.-M. Saarikoski, S. Aurela, M. Viidanoja, J. Paatero, J. Koponen, I. K. Kulmala, M. Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Aerosol chemical composition was measured over the Atlantic Ocean in November?December 1999 and at the Finnish Antarctic research station Aboa in January 2000. The concentrations of all anthropogenic aerosol compounds decreased clearly from north to south. An anthropogenic influence was still evident in the middle of the tropical South Atlantic, background values were reached south of Cape Town. Chemical mass balance was calculated for high volume filter samples (D p <3 ?m). North of the equator 70?80% of the aerosol consisted of non-sea-salt species. The contribution of sea salt was ~25% in the polluted latitudes, >80% in the Southern Ocean, and <10% at Aboa. The contribution of organic carbon was >10% in most samples, also at Aboa. The correlation of biomass-burning-related aerosol components with 210 Pb was very high compared with that between nss calcium and 210 Pb which suggests that 210 Pb is a better tracer for biomass burning than for Saharan dust. The ratio of the two clear tracers for biomass burning, nss potassium and oxalate, was different in European and in African samples, suggesting that this ratio could be used as an indicator of biomass burning type. The concentrations of continent-related particles decreased exponentially with the distance from Africa. The shortest half-value distance, ~100 km, was for nss calcium. The half-value distance of particles that are mainly in the submicron particles was ~700±200 km. The MSA to nss sulfate ratio, R, increased faster than MSA concentration with decreasing anthropogenic influence, indicating that the R increase could largely be explained by the decrease of anthropogenic sulfate. |
author2 |
Finnish Meteorological Institute (FMI) Department Department of Chemistry Laboratory of Analytical Chemistry Department of Chemistry Copenhagen Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Aerosol and Environmental Physics Laboratory Helsinki Helsingin yliopisto = Helsingfors universitet = University of Helsinki |
format |
Article in Journal/Newspaper |
author |
Virkkula, A. Teinilä, K. Hillamo, R. Kerminen, V.-M. Saarikoski, S. Aurela, M. Viidanoja, J. Paatero, J. Koponen, I. K. Kulmala, M. |
author_facet |
Virkkula, A. Teinilä, K. Hillamo, R. Kerminen, V.-M. Saarikoski, S. Aurela, M. Viidanoja, J. Paatero, J. Koponen, I. K. Kulmala, M. |
author_sort |
Virkkula, A. |
title |
Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site |
title_short |
Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site |
title_full |
Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site |
title_fullStr |
Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site |
title_full_unstemmed |
Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site |
title_sort |
chemical composition of boundary layer aerosol over the atlantic ocean and at an antarctic site |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00303829 https://hal.science/hal-00303829/document https://hal.science/hal-00303829/file/acpd-6-455-2006.pdf |
long_lat |
ENVELOPE(-13.417,-13.417,-73.050,-73.050) |
geographic |
Aboa Antarctic Southern Ocean |
geographic_facet |
Aboa Antarctic Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00303829 Atmospheric Chemistry and Physics Discussions, 2006, 6 (1), pp.455-491 |
op_relation |
hal-00303829 https://hal.science/hal-00303829 https://hal.science/hal-00303829/document https://hal.science/hal-00303829/file/acpd-6-455-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1790593695952666624 |