Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea
International audience The atmospheric fluxes of Fe and Al were determined from bulk (wet + dry) plus wet only deposition and aerosol samples collected at Bermuda from 1999 to 2001. During the sampling period, dry deposition accounted for majority (>70%) of total Fe deposition estimated by both m...
Published in: | Geochemistry, Geophysics, Geosystems |
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ftunivaixmarseil:oai:HAL:hal-02116103v1 2024-05-19T07:44:56+00:00 Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea Tian, Zhenglong Ollivier, Patrick Veron, Alain Church, Thomas Bureau de Recherches Géologiques et Minières (BRGM) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) School of Marine Science and Policy University of Delaware Newark 2008-08 https://hal.science/hal-02116103 https://hal.science/hal-02116103/document https://hal.science/hal-02116103/file/2007GC001868.pdf https://doi.org/10.1029/2007GC001868 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GC001868 hal-02116103 https://hal.science/hal-02116103 https://hal.science/hal-02116103/document https://hal.science/hal-02116103/file/2007GC001868.pdf doi:10.1029/2007GC001868 info:eu-repo/semantics/OpenAccess ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-02116103 Geochemistry, Geophysics, Geosystems, 2008, 9 (8), pp.n/a-n/a. ⟨10.1029/2007GC001868⟩ Fe deposition deposition mode NAO [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2008 ftunivaixmarseil https://doi.org/10.1029/2007GC001868 2024-05-02T00:06:52Z International audience The atmospheric fluxes of Fe and Al were determined from bulk (wet + dry) plus wet only deposition and aerosol samples collected at Bermuda from 1999 to 2001. During the sampling period, dry deposition accounted for majority (>70%) of total Fe deposition estimated by both modeled and measured means. This contrasts the North Pacific, where generally wet dominates dry deposition. This may be caused by the size and proximity of continental dust sources and seasonal patterns of precipitation to the North Atlantic. Comparing time series measurement of wet soluble Fe deposition indicates that the North Atlantic Oscillation (NAO) may impact the deposition mode of Fe in these areas. The dry deposition velocities of Fe-bearing aerosols (DDV Fe) were estimated from paired averages of measured dry deposition (bulk-wet fluxes) divided by corresponding aerosol concentrations, and a seasonal trend was observed. During the summer months of 1999, the DDV Fe ranged from 0.1 to 0.3 cm s À1 yet, during the fall and winter months, the DDV Fe ranged from 2.0 to 6.0 cm s À1. It is hypothesized that with increased humidity and wind speeds at Bermuda during fall and winter, mineral aerosol particles could be internally mixed with sea salt and gaseous S and N pollutants to increase effective particle sizes. Such marine particle aggregation is reported elsewhere and could seasonally increase the apparent dry deposition velocity of mineral aerosols. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Aix-Marseille Université: HAL Geochemistry, Geophysics, Geosystems 9 8 n/a n/a |
institution |
Open Polar |
collection |
Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
Fe deposition deposition mode NAO [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
spellingShingle |
Fe deposition deposition mode NAO [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Tian, Zhenglong Ollivier, Patrick Veron, Alain Church, Thomas Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea |
topic_facet |
Fe deposition deposition mode NAO [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience The atmospheric fluxes of Fe and Al were determined from bulk (wet + dry) plus wet only deposition and aerosol samples collected at Bermuda from 1999 to 2001. During the sampling period, dry deposition accounted for majority (>70%) of total Fe deposition estimated by both modeled and measured means. This contrasts the North Pacific, where generally wet dominates dry deposition. This may be caused by the size and proximity of continental dust sources and seasonal patterns of precipitation to the North Atlantic. Comparing time series measurement of wet soluble Fe deposition indicates that the North Atlantic Oscillation (NAO) may impact the deposition mode of Fe in these areas. The dry deposition velocities of Fe-bearing aerosols (DDV Fe) were estimated from paired averages of measured dry deposition (bulk-wet fluxes) divided by corresponding aerosol concentrations, and a seasonal trend was observed. During the summer months of 1999, the DDV Fe ranged from 0.1 to 0.3 cm s À1 yet, during the fall and winter months, the DDV Fe ranged from 2.0 to 6.0 cm s À1. It is hypothesized that with increased humidity and wind speeds at Bermuda during fall and winter, mineral aerosol particles could be internally mixed with sea salt and gaseous S and N pollutants to increase effective particle sizes. Such marine particle aggregation is reported elsewhere and could seasonally increase the apparent dry deposition velocity of mineral aerosols. |
author2 |
Bureau de Recherches Géologiques et Minières (BRGM) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) School of Marine Science and Policy University of Delaware Newark |
format |
Article in Journal/Newspaper |
author |
Tian, Zhenglong Ollivier, Patrick Veron, Alain Church, Thomas |
author_facet |
Tian, Zhenglong Ollivier, Patrick Veron, Alain Church, Thomas |
author_sort |
Tian, Zhenglong |
title |
Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea |
title_short |
Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea |
title_full |
Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea |
title_fullStr |
Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea |
title_full_unstemmed |
Atmospheric Fe deposition modes at Bermuda and the adjacent Sargasso Sea |
title_sort |
atmospheric fe deposition modes at bermuda and the adjacent sargasso sea |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-02116103 https://hal.science/hal-02116103/document https://hal.science/hal-02116103/file/2007GC001868.pdf https://doi.org/10.1029/2007GC001868 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-02116103 Geochemistry, Geophysics, Geosystems, 2008, 9 (8), pp.n/a-n/a. ⟨10.1029/2007GC001868⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GC001868 hal-02116103 https://hal.science/hal-02116103 https://hal.science/hal-02116103/document https://hal.science/hal-02116103/file/2007GC001868.pdf doi:10.1029/2007GC001868 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007GC001868 |
container_title |
Geochemistry, Geophysics, Geosystems |
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9 |
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8 |
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