Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic
Particle sinking velocity is considered to be a controlling factor for carbon transport to the deep sea and thus carbon sequestration in the oceans. The velocities of the material exported to depth are considered to be high in high-latitude productive systems and low in oligotrophic distributions. W...
Published in: | Geophysical Research Letters |
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Online Access: | https://oceanrep.geomar.de/id/eprint/34674/ https://oceanrep.geomar.de/id/eprint/34674/1/grl54835.pdf https://doi.org/10.1002/2016GL069233 |
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ftoceanrep:oai:oceanrep.geomar.de:34674 2023-05-15T17:29:33+02:00 Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic Villa-Alfageme, M. de Soto, F. C. Ceballos, E. Giering, S. L. C. Le Moigne, Frederic A. C. Henson, S. Mas, J. L. Sanders, R. J. 2016-08-24 text https://oceanrep.geomar.de/id/eprint/34674/ https://oceanrep.geomar.de/id/eprint/34674/1/grl54835.pdf https://doi.org/10.1002/2016GL069233 en eng AGU (American Geophysical Union) Wiley https://oceanrep.geomar.de/id/eprint/34674/1/grl54835.pdf Villa-Alfageme, M., de Soto, F. C., Ceballos, E., Giering, S. L. C., Le Moigne, F. A. C. , Henson, S., Mas, J. L. and Sanders, R. J. (2016) Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic. Open Access Geophysical Research Letters, 43 (16). pp. 8609-8616. DOI 10.1002/2016GL069233 <https://doi.org/10.1002/2016GL069233>. doi:10.1002/2016GL069233 info:eu-repo/semantics/openAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.1002/2016GL069233 2023-04-07T15:29:06Z Particle sinking velocity is considered to be a controlling factor for carbon transport to the deep sea and thus carbon sequestration in the oceans. The velocities of the material exported to depth are considered to be high in high-latitude productive systems and low in oligotrophic distributions. We use a recently developed method based on the measurement of the radioactive pair 210Po-210Pb to calculate particle sinking velocities in the temperate and oligotrophic North Atlantic during different bloom stages. Our estimates of average sinking velocities (ASVs) show that slowly sinking particles (<100 m d−1) contribute significantly to carbon flux at all the locations except in the temperate regions during the bloom. ASVs appear to vary strongly with season, which we propose is caused by changes in the epipelagic community structure. Our results are the first field data to confirm the long-standing theory that particle sinking velocities increase with depth, with increases of up to 90% between 50 and 150 m depth. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Geophysical Research Letters 43 16 8609 8616 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Particle sinking velocity is considered to be a controlling factor for carbon transport to the deep sea and thus carbon sequestration in the oceans. The velocities of the material exported to depth are considered to be high in high-latitude productive systems and low in oligotrophic distributions. We use a recently developed method based on the measurement of the radioactive pair 210Po-210Pb to calculate particle sinking velocities in the temperate and oligotrophic North Atlantic during different bloom stages. Our estimates of average sinking velocities (ASVs) show that slowly sinking particles (<100 m d−1) contribute significantly to carbon flux at all the locations except in the temperate regions during the bloom. ASVs appear to vary strongly with season, which we propose is caused by changes in the epipelagic community structure. Our results are the first field data to confirm the long-standing theory that particle sinking velocities increase with depth, with increases of up to 90% between 50 and 150 m depth. |
format |
Article in Journal/Newspaper |
author |
Villa-Alfageme, M. de Soto, F. C. Ceballos, E. Giering, S. L. C. Le Moigne, Frederic A. C. Henson, S. Mas, J. L. Sanders, R. J. |
spellingShingle |
Villa-Alfageme, M. de Soto, F. C. Ceballos, E. Giering, S. L. C. Le Moigne, Frederic A. C. Henson, S. Mas, J. L. Sanders, R. J. Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic |
author_facet |
Villa-Alfageme, M. de Soto, F. C. Ceballos, E. Giering, S. L. C. Le Moigne, Frederic A. C. Henson, S. Mas, J. L. Sanders, R. J. |
author_sort |
Villa-Alfageme, M. |
title |
Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic |
title_short |
Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic |
title_full |
Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic |
title_fullStr |
Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic |
title_full_unstemmed |
Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic |
title_sort |
geographical, seasonal, and depth variation in sinking particle speeds in the north atlantic |
publisher |
AGU (American Geophysical Union) |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/34674/ https://oceanrep.geomar.de/id/eprint/34674/1/grl54835.pdf https://doi.org/10.1002/2016GL069233 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/34674/1/grl54835.pdf Villa-Alfageme, M., de Soto, F. C., Ceballos, E., Giering, S. L. C., Le Moigne, F. A. C. , Henson, S., Mas, J. L. and Sanders, R. J. (2016) Geographical, seasonal, and depth variation in sinking particle speeds in the North Atlantic. Open Access Geophysical Research Letters, 43 (16). pp. 8609-8616. DOI 10.1002/2016GL069233 <https://doi.org/10.1002/2016GL069233>. doi:10.1002/2016GL069233 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2016GL069233 |
container_title |
Geophysical Research Letters |
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43 |
container_issue |
16 |
container_start_page |
8609 |
op_container_end_page |
8616 |
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1766123708393455616 |