Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th
There is compelling evidence that millennial climate variability of the last glacial period was associated with significant changes in the Atlantic Meridional Overturning Circulation (AMOC). Several North Atlantic sedimentary Pa/Th records indicate a consistent and large Pa/Th increase across millen...
Published in: | Quaternary Science Reviews |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://research.vu.nl/en/publications/d44a38dd-c39d-4761-ad51-2c39a75f98c5 https://doi.org/10.1016/j.quascirev.2020.106394 https://hdl.handle.net/1871.1/d44a38dd-c39d-4761-ad51-2c39a75f98c5 https://research.vu.nl/ws/files/127557314/Modelling_the_impact_of_biogenic_particle_flux_intensity_and_composition_on_sedimentary_Pa_Th.pdf http://www.scopus.com/inward/record.url?scp=85086567839&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85086567839&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/d44a38dd-c39d-4761-ad51-2c39a75f98c5 2024-06-23T07:54:40+00:00 Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th Missiaen, Lise Menviel, Laurie C. Meissner, Katrin J. Roche, Didier M. Dutay, Jean Claude Bouttes, Nathaelle Lhardy, Fanny Quiquet, Aurélien Pichat, Sylvain Waelbroeck, Claire 2020-07-15 application/pdf https://research.vu.nl/en/publications/d44a38dd-c39d-4761-ad51-2c39a75f98c5 https://doi.org/10.1016/j.quascirev.2020.106394 https://hdl.handle.net/1871.1/d44a38dd-c39d-4761-ad51-2c39a75f98c5 https://research.vu.nl/ws/files/127557314/Modelling_the_impact_of_biogenic_particle_flux_intensity_and_composition_on_sedimentary_Pa_Th.pdf http://www.scopus.com/inward/record.url?scp=85086567839&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85086567839&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/d44a38dd-c39d-4761-ad51-2c39a75f98c5 info:eu-repo/semantics/openAccess Missiaen , L , Menviel , L C , Meissner , K J , Roche , D M , Dutay , J C , Bouttes , N , Lhardy , F , Quiquet , A , Pichat , S & Waelbroeck , C 2020 , ' Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th ' , Quaternary Science Reviews , vol. 240 , 106394 , pp. 1-12 . https://doi.org/10.1016/j.quascirev.2020.106394 Abrupt climate events Ocean circulation Pa/Th Particle fluxes /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2020 ftvuamstcris https://doi.org/10.1016/j.quascirev.2020.106394 2024-06-06T00:21:54Z There is compelling evidence that millennial climate variability of the last glacial period was associated with significant changes in the Atlantic Meridional Overturning Circulation (AMOC). Several North Atlantic sedimentary Pa/Th records indicate a consistent and large Pa/Th increase across millennial-scale events, which has been interpreted as considerable reduction in North Atlantic Deep Water (NADW) formation. However, the use of sedimentary Pa/Th as a pure kinematic circulation proxy is challenging because Pa and Th are also highly sensitive to changes in particulate flux intensity and composition that might have occurred across these millennial scale events. In this study, we use the Pa/Th enabled iLOVECLIM Earth System Model of intermediate complexity to evaluate the impact of changes in biogenic particle flux intensity and composition on the Atlantic Pa/Th. We find that in our model, changes in Particulate Organic Carbon (POC), and to a lesser extent biogenic opal production, can significantly affect the sedimentary Pa/Th, possibly explaining up to 30% of the observed North Atlantic Pa/Th increase across Heinrich stadial 1. The sedimentary Pa/Th response is also likely sensitive to shifts in the geographical distribution of the particles, especially in high scavenging regions. Our study suggests that a decrease in opal production in the northwest Atlantic can induce a far field Pa/Th increase in a large part of the North Atlantic basin. Therefore, local monitoring of particle fluxes may not be sufficient to rule out any influence of changing particle fluxes on sedimentary Pa/Th records. Article in Journal/Newspaper NADW North Atlantic Deep Water North Atlantic Northwest Atlantic Vrije Universiteit Amsterdam (VU): Research Portal Quaternary Science Reviews 240 106394 |
institution |
Open Polar |
collection |
Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
Abrupt climate events Ocean circulation Pa/Th Particle fluxes /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Abrupt climate events Ocean circulation Pa/Th Particle fluxes /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Missiaen, Lise Menviel, Laurie C. Meissner, Katrin J. Roche, Didier M. Dutay, Jean Claude Bouttes, Nathaelle Lhardy, Fanny Quiquet, Aurélien Pichat, Sylvain Waelbroeck, Claire Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th |
topic_facet |
Abrupt climate events Ocean circulation Pa/Th Particle fluxes /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
There is compelling evidence that millennial climate variability of the last glacial period was associated with significant changes in the Atlantic Meridional Overturning Circulation (AMOC). Several North Atlantic sedimentary Pa/Th records indicate a consistent and large Pa/Th increase across millennial-scale events, which has been interpreted as considerable reduction in North Atlantic Deep Water (NADW) formation. However, the use of sedimentary Pa/Th as a pure kinematic circulation proxy is challenging because Pa and Th are also highly sensitive to changes in particulate flux intensity and composition that might have occurred across these millennial scale events. In this study, we use the Pa/Th enabled iLOVECLIM Earth System Model of intermediate complexity to evaluate the impact of changes in biogenic particle flux intensity and composition on the Atlantic Pa/Th. We find that in our model, changes in Particulate Organic Carbon (POC), and to a lesser extent biogenic opal production, can significantly affect the sedimentary Pa/Th, possibly explaining up to 30% of the observed North Atlantic Pa/Th increase across Heinrich stadial 1. The sedimentary Pa/Th response is also likely sensitive to shifts in the geographical distribution of the particles, especially in high scavenging regions. Our study suggests that a decrease in opal production in the northwest Atlantic can induce a far field Pa/Th increase in a large part of the North Atlantic basin. Therefore, local monitoring of particle fluxes may not be sufficient to rule out any influence of changing particle fluxes on sedimentary Pa/Th records. |
format |
Article in Journal/Newspaper |
author |
Missiaen, Lise Menviel, Laurie C. Meissner, Katrin J. Roche, Didier M. Dutay, Jean Claude Bouttes, Nathaelle Lhardy, Fanny Quiquet, Aurélien Pichat, Sylvain Waelbroeck, Claire |
author_facet |
Missiaen, Lise Menviel, Laurie C. Meissner, Katrin J. Roche, Didier M. Dutay, Jean Claude Bouttes, Nathaelle Lhardy, Fanny Quiquet, Aurélien Pichat, Sylvain Waelbroeck, Claire |
author_sort |
Missiaen, Lise |
title |
Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th |
title_short |
Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th |
title_full |
Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th |
title_fullStr |
Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th |
title_full_unstemmed |
Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th |
title_sort |
modelling the impact of biogenic particle flux intensity and composition on sedimentary pa/th |
publishDate |
2020 |
url |
https://research.vu.nl/en/publications/d44a38dd-c39d-4761-ad51-2c39a75f98c5 https://doi.org/10.1016/j.quascirev.2020.106394 https://hdl.handle.net/1871.1/d44a38dd-c39d-4761-ad51-2c39a75f98c5 https://research.vu.nl/ws/files/127557314/Modelling_the_impact_of_biogenic_particle_flux_intensity_and_composition_on_sedimentary_Pa_Th.pdf http://www.scopus.com/inward/record.url?scp=85086567839&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85086567839&partnerID=8YFLogxK |
genre |
NADW North Atlantic Deep Water North Atlantic Northwest Atlantic |
genre_facet |
NADW North Atlantic Deep Water North Atlantic Northwest Atlantic |
op_source |
Missiaen , L , Menviel , L C , Meissner , K J , Roche , D M , Dutay , J C , Bouttes , N , Lhardy , F , Quiquet , A , Pichat , S & Waelbroeck , C 2020 , ' Modelling the impact of biogenic particle flux intensity and composition on sedimentary Pa/Th ' , Quaternary Science Reviews , vol. 240 , 106394 , pp. 1-12 . https://doi.org/10.1016/j.quascirev.2020.106394 |
op_relation |
https://research.vu.nl/en/publications/d44a38dd-c39d-4761-ad51-2c39a75f98c5 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106394 |
container_title |
Quaternary Science Reviews |
container_volume |
240 |
container_start_page |
106394 |
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1802646887857127424 |