Wet deposition of particulate carbon to the Central North Atlantic Ocean
Elemental carbon (EC) and water-insoluble organic carbon (WIOC) concentrations were measured in wet-only precipitation samples collected on Terceira Island (Azores, Portugal) between December 2009 and October 2010, to investigate temporal variations, source regions and wet deposition fluxes. The glo...
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ftunivacores:oai:repositorio.uac.pt:10400.3/4551 2023-05-15T17:31:57+02:00 Wet deposition of particulate carbon to the Central North Atlantic Ocean Custódio, Danilo Cerqueira, Mário Fialho, Paulo Nunes, Teresa Pio, Casimiro Henriques, Diamantino 2014 http://hdl.handle.net/10400.3/4551 https://doi.org/10.1016/j.scitotenv.2014.06.103 eng eng Elsevier info:eu-repo/grantAgreement/FCT/5876-PPCDTI/66198/PT http://www.sciencedirect.com/science/article/pii/S0048969714009760 Custódio, Danilo; Cerqueira, Mário; Fialho, Paulo; Nunes, Teresa; Pio, Casimiro; Henriques, Diamantino (2014). Wet deposition of particulate carbon to the Central North Atlantic Ocean, "Science of The Total Environment", 496: 92-99. DOI:10.1016/j.scitotenv.2014.06.103 1879-1026 http://hdl.handle.net/10400.3/4551 doi:10.1016/j.scitotenv.2014.06.103 openAccess Background Atmosphere Elemental Carbon Organic Carbon Precipitation article 2014 ftunivacores https://doi.org/10.1016/j.scitotenv.2014.06.103 2022-05-01T14:31:05Z Elemental carbon (EC) and water-insoluble organic carbon (WIOC) concentrations were measured in wet-only precipitation samples collected on Terceira Island (Azores, Portugal) between December 2009 and October 2010, to investigate temporal variations, source regions and wet deposition fluxes. The global volume-weighted average (vwa) concentrations were 134 ± 19 μgC L(-1) for WIOC and 15.0 ± 1.6 μgC L(-1) for EC, which fall within the range of values that have been found in the European background atmosphere. The WIOC concentration exhibited a temporal variation over the study period with a minimum in winter (vwa 88 ± 16 μgC L(-1)) and a maximum in summer (vwa 477 ± 86 μgC L(-1)). This trend was due to the higher dilution effect of winter rains and possibly to an increase of biogenic particulate carbon incorporation during the growing season. A different temporal variation was observed for the EC concentration with a minimum in summer (vwa 4.2 ± 3.3 μgC L(-1)) and a maximum in spring (vwa 17.5 ± 2.2 μgC L(-1)). The observed trend was mainly related to changes in atmospheric circulation patterns over the Azores. A backward trajectory analysis was applied to identify possible source regions of particulate carbon. The highest WIOC and EC concentrations were associated with air masses that persisted for more than four days over the Central North Atlantic Ocean and with air masses arriving from Europe, respectively. Lower concentrations were observed in samples collected under the influence of back-trajectories from North America. Despite the lower abundance of particulate carbon, the wet deposition fluxes were higher for this group of samples, which reflects the higher amount of precipitation that is normally associated with air masses arriving in the Azores from the west and northwest sectors. D. Custódio was supported by a PhD grant from FCT (SFRH/BD/76283/2011). info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper North Atlantic Repositório da Universidade dos Açores Science of The Total Environment 496 92 99 |
institution |
Open Polar |
collection |
Repositório da Universidade dos Açores |
op_collection_id |
ftunivacores |
language |
English |
topic |
Background Atmosphere Elemental Carbon Organic Carbon Precipitation |
spellingShingle |
Background Atmosphere Elemental Carbon Organic Carbon Precipitation Custódio, Danilo Cerqueira, Mário Fialho, Paulo Nunes, Teresa Pio, Casimiro Henriques, Diamantino Wet deposition of particulate carbon to the Central North Atlantic Ocean |
topic_facet |
Background Atmosphere Elemental Carbon Organic Carbon Precipitation |
description |
Elemental carbon (EC) and water-insoluble organic carbon (WIOC) concentrations were measured in wet-only precipitation samples collected on Terceira Island (Azores, Portugal) between December 2009 and October 2010, to investigate temporal variations, source regions and wet deposition fluxes. The global volume-weighted average (vwa) concentrations were 134 ± 19 μgC L(-1) for WIOC and 15.0 ± 1.6 μgC L(-1) for EC, which fall within the range of values that have been found in the European background atmosphere. The WIOC concentration exhibited a temporal variation over the study period with a minimum in winter (vwa 88 ± 16 μgC L(-1)) and a maximum in summer (vwa 477 ± 86 μgC L(-1)). This trend was due to the higher dilution effect of winter rains and possibly to an increase of biogenic particulate carbon incorporation during the growing season. A different temporal variation was observed for the EC concentration with a minimum in summer (vwa 4.2 ± 3.3 μgC L(-1)) and a maximum in spring (vwa 17.5 ± 2.2 μgC L(-1)). The observed trend was mainly related to changes in atmospheric circulation patterns over the Azores. A backward trajectory analysis was applied to identify possible source regions of particulate carbon. The highest WIOC and EC concentrations were associated with air masses that persisted for more than four days over the Central North Atlantic Ocean and with air masses arriving from Europe, respectively. Lower concentrations were observed in samples collected under the influence of back-trajectories from North America. Despite the lower abundance of particulate carbon, the wet deposition fluxes were higher for this group of samples, which reflects the higher amount of precipitation that is normally associated with air masses arriving in the Azores from the west and northwest sectors. D. Custódio was supported by a PhD grant from FCT (SFRH/BD/76283/2011). info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Custódio, Danilo Cerqueira, Mário Fialho, Paulo Nunes, Teresa Pio, Casimiro Henriques, Diamantino |
author_facet |
Custódio, Danilo Cerqueira, Mário Fialho, Paulo Nunes, Teresa Pio, Casimiro Henriques, Diamantino |
author_sort |
Custódio, Danilo |
title |
Wet deposition of particulate carbon to the Central North Atlantic Ocean |
title_short |
Wet deposition of particulate carbon to the Central North Atlantic Ocean |
title_full |
Wet deposition of particulate carbon to the Central North Atlantic Ocean |
title_fullStr |
Wet deposition of particulate carbon to the Central North Atlantic Ocean |
title_full_unstemmed |
Wet deposition of particulate carbon to the Central North Atlantic Ocean |
title_sort |
wet deposition of particulate carbon to the central north atlantic ocean |
publisher |
Elsevier |
publishDate |
2014 |
url |
http://hdl.handle.net/10400.3/4551 https://doi.org/10.1016/j.scitotenv.2014.06.103 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
info:eu-repo/grantAgreement/FCT/5876-PPCDTI/66198/PT http://www.sciencedirect.com/science/article/pii/S0048969714009760 Custódio, Danilo; Cerqueira, Mário; Fialho, Paulo; Nunes, Teresa; Pio, Casimiro; Henriques, Diamantino (2014). Wet deposition of particulate carbon to the Central North Atlantic Ocean, "Science of The Total Environment", 496: 92-99. DOI:10.1016/j.scitotenv.2014.06.103 1879-1026 http://hdl.handle.net/10400.3/4551 doi:10.1016/j.scitotenv.2014.06.103 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2014.06.103 |
container_title |
Science of The Total Environment |
container_volume |
496 |
container_start_page |
92 |
op_container_end_page |
99 |
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1766129857742241792 |