Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps
Significant attenuation on sinking Particulate Organic Carbon (POC) takes place within the upper hundreds meters of the water column. The study of the transfer efficiency is essential to improve our understanding of the ocean’s role in sequestering carbon. Here we present results on downward POC flu...
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ftawi:oai:epic.awi.de:39503 2023-05-15T18:24:41+02:00 Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps Roca-Martí, Montserrat Puigcorbé, Viena Masqué, P. Rutgers v. d. Loeff, Michiel Iversen, Morten Hoppe, Clara Klaas, Christine Altenburg, Mariana Bracher, Astrid 2015-02-23 https://epic.awi.de/id/eprint/39503/ https://hdl.handle.net/10013/epic.46668 unknown Roca-Martí, M. , Puigcorbé, V. , Masqué, P. , Rutgers v. d. Loeff, M. orcid:0000-0003-1393-3742 , Iversen, M. orcid:0000-0002-5287-1110 , Hoppe, C. orcid:0000-0002-2509-0546 , Klaas, C. orcid:0000-0002-6679-8970 , Altenburg, M. and Bracher, A. orcid:0000-0003-3025-5517 (2015) Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps , 2015 Aquatic Sciences Meeting, Granada, 22 February 2015 - 27 February 2015 . hdl:10013/epic.46668 EPIC32015 Aquatic Sciences Meeting, Granada, 2015-02-22-2015-02-27 Conference notRev 2015 ftawi 2021-12-24T15:41:02Z Significant attenuation on sinking Particulate Organic Carbon (POC) takes place within the upper hundreds meters of the water column. The study of the transfer efficiency is essential to improve our understanding of the ocean’s role in sequestering carbon. Here we present results on downward POC fluxes as well as export efficiency (i.e. export/production ratio) in the Southern Ocean, which is a key regulator of the global carbon cycle. We followed a vast algal bloom occurred around 51ºS 13ºW during three weeks in summer 2012 and used Th-234 as a particle tracer in combination with sediment traps (ST). The estimated POC fluxes at 100 m were high, averaging 19 ± 9 and 33 ± 10 mmol m-2 d-1 (ST and ST+Th-234, respectively), and they were reduced by a factor of 2 at 300 m in most of the stations. The export efficiency at 100 m was generally low (<10%), but it was >30% in some locations. Phytoplankton and sinking particles composition data will be also considered to better comprehend the dynamics affecting POC fluxes in the Southern Ocean. Conference Object Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Southern Ocean |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Significant attenuation on sinking Particulate Organic Carbon (POC) takes place within the upper hundreds meters of the water column. The study of the transfer efficiency is essential to improve our understanding of the ocean’s role in sequestering carbon. Here we present results on downward POC fluxes as well as export efficiency (i.e. export/production ratio) in the Southern Ocean, which is a key regulator of the global carbon cycle. We followed a vast algal bloom occurred around 51ºS 13ºW during three weeks in summer 2012 and used Th-234 as a particle tracer in combination with sediment traps (ST). The estimated POC fluxes at 100 m were high, averaging 19 ± 9 and 33 ± 10 mmol m-2 d-1 (ST and ST+Th-234, respectively), and they were reduced by a factor of 2 at 300 m in most of the stations. The export efficiency at 100 m was generally low (<10%), but it was >30% in some locations. Phytoplankton and sinking particles composition data will be also considered to better comprehend the dynamics affecting POC fluxes in the Southern Ocean. |
format |
Conference Object |
author |
Roca-Martí, Montserrat Puigcorbé, Viena Masqué, P. Rutgers v. d. Loeff, Michiel Iversen, Morten Hoppe, Clara Klaas, Christine Altenburg, Mariana Bracher, Astrid |
spellingShingle |
Roca-Martí, Montserrat Puigcorbé, Viena Masqué, P. Rutgers v. d. Loeff, Michiel Iversen, Morten Hoppe, Clara Klaas, Christine Altenburg, Mariana Bracher, Astrid Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps |
author_facet |
Roca-Martí, Montserrat Puigcorbé, Viena Masqué, P. Rutgers v. d. Loeff, Michiel Iversen, Morten Hoppe, Clara Klaas, Christine Altenburg, Mariana Bracher, Astrid |
author_sort |
Roca-Martí, Montserrat |
title |
Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps |
title_short |
Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps |
title_full |
Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps |
title_fullStr |
Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps |
title_full_unstemmed |
Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps |
title_sort |
carbon export in a bloom region from the atlantic sector of the southern ocean derived from 234th and sediment traps |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/39503/ https://hdl.handle.net/10013/epic.46668 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
EPIC32015 Aquatic Sciences Meeting, Granada, 2015-02-22-2015-02-27 |
op_relation |
Roca-Martí, M. , Puigcorbé, V. , Masqué, P. , Rutgers v. d. Loeff, M. orcid:0000-0003-1393-3742 , Iversen, M. orcid:0000-0002-5287-1110 , Hoppe, C. orcid:0000-0002-2509-0546 , Klaas, C. orcid:0000-0002-6679-8970 , Altenburg, M. and Bracher, A. orcid:0000-0003-3025-5517 (2015) Carbon export in a bloom region from the Atlantic sector of the Southern Ocean derived from 234Th and sediment traps , 2015 Aquatic Sciences Meeting, Granada, 22 February 2015 - 27 February 2015 . hdl:10013/epic.46668 |
_version_ |
1766205486533705728 |