Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source
International audience Long-term observations of carbonaceous aerosols in the Austral Ocean are reported here for the first time from almost 5 years of continuous filter sampling performed at Amsterdam Island (37°48 0 S, 77°34 0 E). Black carbon concentrations determined by optical method were among...
Published in: | Journal of Geophysical Research |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03199235 https://hal.archives-ouvertes.fr/hal-03199235/document https://hal.archives-ouvertes.fr/hal-03199235/file/2009JD011998.pdf https://doi.org/10.1029/2009JD011998 |
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ftccsdartic:oai:HAL:hal-03199235v1 2023-05-15T13:22:27+02:00 Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source Sciare, J. Favez, O. Sarda-Estève, R. Oikonomou, K. Cachier, H. Kazan, V. Chimie Atmosphérique Expérimentale (CAE) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) 2009 https://hal.archives-ouvertes.fr/hal-03199235 https://hal.archives-ouvertes.fr/hal-03199235/document https://hal.archives-ouvertes.fr/hal-03199235/file/2009JD011998.pdf https://doi.org/10.1029/2009JD011998 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2009JD011998 hal-03199235 https://hal.archives-ouvertes.fr/hal-03199235 https://hal.archives-ouvertes.fr/hal-03199235/document https://hal.archives-ouvertes.fr/hal-03199235/file/2009JD011998.pdf doi:10.1029/2009JD011998 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.archives-ouvertes.fr/hal-03199235 Journal of Geophysical Research, American Geophysical Union, 2009, 114 (D15), ⟨10.1029/2009JD011998⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2009 ftccsdartic https://doi.org/10.1029/2009JD011998 2021-12-19T00:16:53Z International audience Long-term observations of carbonaceous aerosols in the Austral Ocean are reported here for the first time from almost 5 years of continuous filter sampling performed at Amsterdam Island (37°48 0 S, 77°34 0 E). Black carbon concentrations determined by optical method were among the lowest reported for marine atmosphere, with monthly mean levels ranging from 2-5 ng C/m 3 during summer to 7-13 ng C/m 3 during winter. A clear seasonal pattern was also observed for organic aerosols, but in opposite phase, with maximum values during the austral summer period (>250 ng C/m 3) and minimum concentrations (100 ng C/m 3) during winter. This seasonal variation of organic concentration was found to be almost entirely related to the water-insoluble organic carbon fraction, suggesting a primary origin for these organics, most probably through bubble bursting processes. Moreover, this summer maximum observed for organic aerosols was found to be correlated with satellite-derived chlorophyll a concentrations averaged over an oceanic region upwind of the sampling site and characterized by relatively high biogenic activity. This oceanic region being located at 1000-2000 km far away from the monitoring station, atmospheric ageing may have played a significant role on the levels and size-resolved properties of marine organics collected at Amsterdam Island. This biogenic marine organic source of primary origin in the Austral Ocean is fully consistent with similar observations previously reported for the Northern Atlantic Ocean and brings further evidences of the major role of marine organic emissions over remote oceanic regions. Article in Journal/Newspaper Amsterdam Island Austral Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Austral Austral Ocean ENVELOPE(90.000,90.000,-60.000,-60.000) Journal of Geophysical Research 114 D15 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Sciare, J. Favez, O. Sarda-Estève, R. Oikonomou, K. Cachier, H. Kazan, V. Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Long-term observations of carbonaceous aerosols in the Austral Ocean are reported here for the first time from almost 5 years of continuous filter sampling performed at Amsterdam Island (37°48 0 S, 77°34 0 E). Black carbon concentrations determined by optical method were among the lowest reported for marine atmosphere, with monthly mean levels ranging from 2-5 ng C/m 3 during summer to 7-13 ng C/m 3 during winter. A clear seasonal pattern was also observed for organic aerosols, but in opposite phase, with maximum values during the austral summer period (>250 ng C/m 3) and minimum concentrations (100 ng C/m 3) during winter. This seasonal variation of organic concentration was found to be almost entirely related to the water-insoluble organic carbon fraction, suggesting a primary origin for these organics, most probably through bubble bursting processes. Moreover, this summer maximum observed for organic aerosols was found to be correlated with satellite-derived chlorophyll a concentrations averaged over an oceanic region upwind of the sampling site and characterized by relatively high biogenic activity. This oceanic region being located at 1000-2000 km far away from the monitoring station, atmospheric ageing may have played a significant role on the levels and size-resolved properties of marine organics collected at Amsterdam Island. This biogenic marine organic source of primary origin in the Austral Ocean is fully consistent with similar observations previously reported for the Northern Atlantic Ocean and brings further evidences of the major role of marine organic emissions over remote oceanic regions. |
author2 |
Chimie Atmosphérique Expérimentale (CAE) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) |
format |
Article in Journal/Newspaper |
author |
Sciare, J. Favez, O. Sarda-Estève, R. Oikonomou, K. Cachier, H. Kazan, V. |
author_facet |
Sciare, J. Favez, O. Sarda-Estève, R. Oikonomou, K. Cachier, H. Kazan, V. |
author_sort |
Sciare, J. |
title |
Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source |
title_short |
Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source |
title_full |
Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source |
title_fullStr |
Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source |
title_full_unstemmed |
Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source |
title_sort |
long-term observations of carbonaceous aerosols in the austral ocean atmosphere: evidence of a biogenic marine organic source |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.archives-ouvertes.fr/hal-03199235 https://hal.archives-ouvertes.fr/hal-03199235/document https://hal.archives-ouvertes.fr/hal-03199235/file/2009JD011998.pdf https://doi.org/10.1029/2009JD011998 |
long_lat |
ENVELOPE(90.000,90.000,-60.000,-60.000) |
geographic |
Austral Austral Ocean |
geographic_facet |
Austral Austral Ocean |
genre |
Amsterdam Island Austral Ocean |
genre_facet |
Amsterdam Island Austral Ocean |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.archives-ouvertes.fr/hal-03199235 Journal of Geophysical Research, American Geophysical Union, 2009, 114 (D15), ⟨10.1029/2009JD011998⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2009JD011998 hal-03199235 https://hal.archives-ouvertes.fr/hal-03199235 https://hal.archives-ouvertes.fr/hal-03199235/document https://hal.archives-ouvertes.fr/hal-03199235/file/2009JD011998.pdf doi:10.1029/2009JD011998 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2009JD011998 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
D15 |
_version_ |
1766365003455135744 |