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apps Other research productkeyboard_double_arrow_right Other ORP type 2019 English Funded by:EC | ACCLIMATE, ANR | RETROEC| ACCLIMATE ,ANR| RETROWaelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Lougheed, Bryan C.; Faranda, Davide; Vrac, Mathieu; Missiaen, Lise; Vazquez Riveiros, Natalia; Burckel, Pierre; Lippold, Jörg; Arz, Helge W.; Dokken, Trond; Thil, François; Dapoigny, Arnaud;Thanks to its optimal location on the northern Brazilian margin, core MD09-3257 records both ocean circulation and atmospheric changes. The latter occur locally in the form of increased rainfall on the adjacent continent during the cold intervals recorded in Greenland ice and northern North Atlantic sediment cores (i.e., Greenland stadials). These rainfall events are recorded in MD09-3257 as peaks in ln(Ti ∕ Ca). New sedimentary Pa ∕ Th data indicate that mid-depth western equatorial water mass transport decreased during all of the Greenland stadials of the last 40 kyr. Using cross-wavelet transforms and spectrogram analysis, we assess the relative phase between the MD09-3257 sedimentary Pa ∕ Th and ln(Ti ∕ Ca) signals. We show that decreased water mass transport between a depth of ∼1300 and 2300 m in the western equatorial Atlantic preceded increased rainfall over the adjacent continent by 120 to 400 yr at Dansgaard–Oeschger (D–O) frequencies, and by 280 to 980 yr at Heinrich-like frequencies. We suggest that the large lead of ocean circulation changes with respect to changes in tropical South American precipitation at Heinrich-like frequencies is related to the effect of a positive feedback involving iceberg discharges in the North Atlantic. In contrast, the absence of widespread ice rafted detrital layers in North Atlantic cores during D–O stadials supports the hypothesis that a feedback such as this was not triggered in the case of D–O stadials, with circulation slowdowns and subsequent changes remaining more limited during D–O stadials than Heinrich stadials.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=copernicuspu::767bf337f6cf836edb1266c471e1e865&type=result"></script>'); --> </script>
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For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2019 EnglishPublisher:PANGAEA Funded by:NSERC, EC | OCEANQUANT, ANR | RETRO +24 projectsNSERC ,EC| OCEANQUANT ,ANR| RETRO ,EC| ICE2ICE ,UKRI| BGS-2012-DTG-Funding 2 Studentships ,FCT| SFRH/BPD/36615/2007 ,EC| ACCLIMATE ,EC| SHARP ,ARC| Discovery Early Career Researcher Award - Grant ID: DE150100107 ,NSF| Collaborative Research: Insights into North African climate variability over the last 1.1 million years from dust fluxes and leaf wax isotopes ,SNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,NSF| US-France Cooperative Research: Variability in Thermohaline Circulation and North Atlantic Climate ,EC| NEWLOG ,NSF| Collaborative Research: Mathematics and Climate Change Research Network ,FCT| SFRH/BPD/1588/2000 ,NSF| Hindcasting the Ocean radiocarbon history of the past 25,000 years ,EC| PACEMAKER ,UKRI| Assessing the role of millennial-scale variability in glacial-interglacial climate change ,UKRI| The bi-polar seesaw and CO2: Is there anything special about 'Terminal seesaw events'? ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphere ,UKRI| Resolving the ocean's role in deglacial radiocarbon cycling (OCEAN-14) ,NSF| Quantifying Changes in Thermohaline Circulation Rates During the Last 30 ka Using Radionuclides in Atlantic Sediments ,NSF| Collaborative Research: Bipolar Coupling of late Quaternary Ice Sheet Variability ,UKRI| Instantaneous and inverse coupling between the South and North Atlantic during the last glacial period ,EC| PAST4FUTURE ,EC| TRACE ,UKRI| Changes in ocean circulation and the global carbon cycle during the last interglacial-glacial transition: Marine Isotope Stage 5a to 4Authors: Waelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; +59 AuthorsWaelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel B; Dokken, Trond; Hajdas, Irka; Wacker, Lukas; Abbott, Peter M; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza Spadano; Arz, Helge Wolfgang; Austin, William EN; Came, Rosemarie E; Carlson, Anders Eskil; Collins, James A; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad A; Jung, Simon; Knutz, Paul Cornils; Lebreiro, Susana Martin; Lund, David C; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M; Martínez Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia Osorio; Nürnberg, Dirk; Oppo, Delia W; Peck, Victoria L; Peeters, Frank J C; Penaud, Aurélie; Portilho-Ramos, Rodrigo Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goñi, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C; Skonieczny, Charlotte; Thornalley, David J R; Toucanne, Samuel; Van Rooij, David; Vidal, Laurence; Voelker, Antje H L; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin;Rapid changes in ocean circulation and climate have been observed in marine-sediment and ice cores over the last glacial period and deglaciation, highlighting the non-linear character of the climate system and underlining the possibility of rapid climate shifts in response to anthropogenic greenhouse gas forcing. To date, these rapid changes in climate and ocean circulation are still not fully explained. One obstacle hindering progress in our understanding of the interactions between past ocean circulation and climate changes is the difficulty of accurately dating marine cores. Here, we present a set of 92 marine sediment cores from the Atlantic Ocean for which we have established age-depth models that are consistent with the Greenland GICC05 ice core chronology, and computed the associated dating uncertainties, using a new deposition modeling technique. This is the first set of consistently dated marine sediment cores enabling paleoclimate scientists to evaluate leads/lags between circulation and climate changes over vast regions of the Atlantic Ocean. Moreover, this data set is of direct use in paleoclimate modeling studies.
PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.899490&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2019 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, EC | OCEANQUANTANR| RETRO ,EC| OCEANQUANTAuthors: Waelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; +59 AuthorsWaelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel B; Dokken, Trond; Hajdas, Irka; Wacker, Lukas; Abbott, Peter M; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza Spadano; Arz, Helge Wolfgang; Austin, William EN; Came, Rosemarie E; Carlson, Anders Eskil; Collins, James A; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad A; Jung, Simon; Knutz, Paul Cornils; Lebreiro, Susana Martin; Lund, David C; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M; Martínez Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia Osorio; Nürnberg, Dirk; Oppo, Delia W; Peck, Victoria L; Peeters, Frank J C; Penaud, Aurélie; Portilho-Ramos, Rodrigo Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goñi, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C; Skonieczny, Charlotte; Thornalley, David J R; Toucanne, Samuel; Van Rooij, David; Vidal, Laurence; Voelker, Antje H L; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin;Undatable run on 2019-06-17 12:36:02. nsim=10000 bootpc=10 xfactor=0.1 combine=Yes
PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.905254&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2019 EnglishPublisher:PANGAEA Funded by:SNSF | Quantifying changes in th..., ANR | RETRO, EC | ACCLIMATE +1 projectsSNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,ANR| RETRO ,EC| ACCLIMATE ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphereAuthors: Waelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; +59 AuthorsWaelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel B; Dokken, Trond; Hajdas, Irka; Wacker, Lukas; Abbott, Peter M; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza Spadano; Arz, Helge Wolfgang; Austin, William EN; Came, Rosemarie E; Carlson, Anders Eskil; Collins, James A; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad A; Jung, Simon; Knutz, Paul Cornils; Lebreiro, Susana Martin; Lund, David C; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M; Martínez Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia Osorio; Nürnberg, Dirk; Oppo, Delia W; Peck, Victoria L; Peeters, Frank J C; Penaud, Aurélie; Portilho-Ramos, Rodrigo Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goñi, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C; Skonieczny, Charlotte; Thornalley, David J R; Toucanne, Samuel; Van Rooij, David; Vidal, Laurence; Voelker, Antje H L; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin;Undatable run on 2019-06-17 12:40:08. nsim=10000 bootpc=10 xfactor=0.1 combine=Yes
PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2018 English Funded by:EC | ACCLIMATE, SNSF | SeaO2 - Past changes in S..., SNSF | Quantifying changes in th... +1 projectsEC| ACCLIMATE ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphere ,SNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,ANR| RETROBurckel Pierre; Waelbroeck Claire; Luo Yiming; Roche Didier M; Pichat Sylvain; Jaccard Samuel L; Gherardi Jeanne-Marie; Govin Aline; Lippold Jörg; Thil François;We reconstruct the geometry and strength of the Atlantic meridional overturning circulation during the Heinrich stadial 2 and three Greenland interstadials of the 20–50 ka period based on the comparison of new and published sedimentary 231Pa / 230Th data with simulated sedimentary 231Pa / 230Th. We show that the deep Atlantic circulation during these interstadials was very different from that of the Holocene. Northern-sourced waters likely circulated above 2500 m depth, with a flow rate lower than that of the present-day North Atlantic deep water (NADW). Southern-sourced deep waters most probably flowed northwards below 4000 m depth into the North Atlantic basin and then southwards as a return flow between 2500 and 4000 m depth. The flow rate of this southern-sourced deep water was likely larger than that of the modern Antarctic bottom water (AABW). Our results further show that during Heinrich stadial 2, the deep Atlantic was probably directly affected by a southern-sourced water mass below 2500 m depth, while a slow, southward-flowing water mass originating from the North Atlantic likely influenced depths between 1500 and 2500 m down to the equator.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=r39633d1e8c4::e4f0e7a9a42ea3580c0b031de45b4fe5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2018 EnglishPublisher:PANGAEA Funded by:EC | OCEANQUANT, EC | ACCLIMATE, ANR | RETROEC| OCEANQUANT ,EC| ACCLIMATE ,ANR| RETROAuthors: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894678&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894678&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2018 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, EC | OCEANQUANTANR| RETRO ,EC| OCEANQUANTAuthors: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894683&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894683&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Collection , Dataset 2018 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, EC | ACCLIMATEANR| RETRO ,EC| ACCLIMATEAuthors: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Thanks to its optimal location on the northern Brazilian margin, core MD09-3257 records both ocean circulation and atmospheric changes. The latter occur locally in the form of increased rainfall on the adjacent continent during the cold intervals recorded in Greenland ice and northern North Atlantic sediment cores (i.e. Greenland stadials). These rainfall events are recorded in MD09-3257 as peaks in ln(Ti/Ca). New sedimentary Pa/Th data indicate that mid-depth western equatorial water mass transport decreased during all of the Greenland stadials of the last 40 kyr. Using cross-wavelet transforms and spectrogram analysis, we assess the relative phase between the MD09-3257 sedimentary Pa/Th and ln(Ti/Ca) signals. We show that decreased water mass transport between a dept of ~1300 and 2300 m in the western equatorial Atlantic preceded increased rainfall over the adjacent continent by 120 to 400 y at Dansgaard-Oeschger (D-O) frequencies, and by 280 to 980 y at Heinrich-like frequencies.We suggest that the large lead of ocean circulation changes with respect to changes in tropical South American precipitation at Heinrich-like frequencies is related to the effect of a positive feedback involving iceberg discharges in the North Atlantic. In contrast, the absence of widespread ice rafted detrital layers in North Atlantic cores during D-O stadials supports the hypothesis that a feedback such as this was not triggered in the case of D-O stadials, with circulation slowdowns and subsequent changes remaining more limited during D-O stadials than Heinrich stadials. Supplement to: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Lougheed, Bryan C; Faranda, Davide; Vrac, Mathieu; Missiaen, Lise; Vázquez Riveiros, Natalia; Burckel, Pierre; Lippold, Jörg; Arz, Helge Wolfgang; Dokken, Trond; Thil, François; Dapoigny, Arnaud (2018): Relative timing of precipitation and ocean circulation changes in the western equatorial Atlantic over the last 45 kyr. Climate of the Past, 14(9), 1315-1330
PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894684&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Collection , Dataset 2016 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, SNSF | Quantifying changes in th..., EC | ACCLIMATE +1 projectsANR| RETRO ,SNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,EC| ACCLIMATE ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphereBurckel, Pierre; Waelbroeck, Claire; Luo, Yiming; Roche, Didier M; Pichat, Sylvain; Jaccard, Samuel L; Gherardi, Jeanne-Marie; Govin, Aline; Lippold, Jörg; Thil, François;We reconstruct the geometry and strength of the Atlantic Meridional Overturning Circulation during Heinrich Stadial 2 and three Greenland interstadials of the 20-50 ka period based on the comparison of new and published sedimentary 231Pa/230Th data with simulated sedimentary 231Pa/230Th. We show that the deep Atlantic circulation during these interstadials was very different from that of the Holocene. Northern-sourced waters likely circulated above 2500 m depth, with a flow rate lower than that of the present day North Atlantic Deep Water (NADW). Southern-sourced deep waters most probably flowed northwards below 4000 m depth into the North Atlantic basin, and then southwards as a return flow between 2500 and 4000 m depth. The flow rate of this southern-sourced deep water was likely larger than that of the modern Antarctic Bottom Water (AABW). Our results further show that during Heinrich Stadial 2, the deep Atlantic was probably directly affected by a southern-sourced water mass below 2500 m depth, while a slow southward flowing water mass originating from the North Atlantic likely influenced depths between 1500 and 2500 m down to the equator. Supplement to: Burckel, Pierre; Waelbroeck, Claire; Luo, Yiming; Roche, Didier M; Pichat, Sylvain; Jaccard, Samuel L; Gherardi, Jeanne-Marie; Govin, Aline; Lippold, Jörg; Thil, François (2016): Changes in the geometry and strength of the Atlantic meridional overturning circulation during the last glacial (20–50 ka). Climate of the Past, 12(11), 2061-2075
PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . Collection . 2016License: CC BYPANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2016License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . Collection . 2016License: CC BYPANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2016License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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apps Other research productkeyboard_double_arrow_right Other ORP type 2019 English Funded by:EC | ACCLIMATE, ANR | RETROEC| ACCLIMATE ,ANR| RETROWaelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Lougheed, Bryan C.; Faranda, Davide; Vrac, Mathieu; Missiaen, Lise; Vazquez Riveiros, Natalia; Burckel, Pierre; Lippold, Jörg; Arz, Helge W.; Dokken, Trond; Thil, François; Dapoigny, Arnaud;Thanks to its optimal location on the northern Brazilian margin, core MD09-3257 records both ocean circulation and atmospheric changes. The latter occur locally in the form of increased rainfall on the adjacent continent during the cold intervals recorded in Greenland ice and northern North Atlantic sediment cores (i.e., Greenland stadials). These rainfall events are recorded in MD09-3257 as peaks in ln(Ti ∕ Ca). New sedimentary Pa ∕ Th data indicate that mid-depth western equatorial water mass transport decreased during all of the Greenland stadials of the last 40 kyr. Using cross-wavelet transforms and spectrogram analysis, we assess the relative phase between the MD09-3257 sedimentary Pa ∕ Th and ln(Ti ∕ Ca) signals. We show that decreased water mass transport between a depth of ∼1300 and 2300 m in the western equatorial Atlantic preceded increased rainfall over the adjacent continent by 120 to 400 yr at Dansgaard–Oeschger (D–O) frequencies, and by 280 to 980 yr at Heinrich-like frequencies. We suggest that the large lead of ocean circulation changes with respect to changes in tropical South American precipitation at Heinrich-like frequencies is related to the effect of a positive feedback involving iceberg discharges in the North Atlantic. In contrast, the absence of widespread ice rafted detrital layers in North Atlantic cores during D–O stadials supports the hypothesis that a feedback such as this was not triggered in the case of D–O stadials, with circulation slowdowns and subsequent changes remaining more limited during D–O stadials than Heinrich stadials.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=copernicuspu::767bf337f6cf836edb1266c471e1e865&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=copernicuspu::767bf337f6cf836edb1266c471e1e865&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2019 EnglishPublisher:PANGAEA Funded by:NSERC, EC | OCEANQUANT, ANR | RETRO +24 projectsNSERC ,EC| OCEANQUANT ,ANR| RETRO ,EC| ICE2ICE ,UKRI| BGS-2012-DTG-Funding 2 Studentships ,FCT| SFRH/BPD/36615/2007 ,EC| ACCLIMATE ,EC| SHARP ,ARC| Discovery Early Career Researcher Award - Grant ID: DE150100107 ,NSF| Collaborative Research: Insights into North African climate variability over the last 1.1 million years from dust fluxes and leaf wax isotopes ,SNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,NSF| US-France Cooperative Research: Variability in Thermohaline Circulation and North Atlantic Climate ,EC| NEWLOG ,NSF| Collaborative Research: Mathematics and Climate Change Research Network ,FCT| SFRH/BPD/1588/2000 ,NSF| Hindcasting the Ocean radiocarbon history of the past 25,000 years ,EC| PACEMAKER ,UKRI| Assessing the role of millennial-scale variability in glacial-interglacial climate change ,UKRI| The bi-polar seesaw and CO2: Is there anything special about 'Terminal seesaw events'? ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphere ,UKRI| Resolving the ocean's role in deglacial radiocarbon cycling (OCEAN-14) ,NSF| Quantifying Changes in Thermohaline Circulation Rates During the Last 30 ka Using Radionuclides in Atlantic Sediments ,NSF| Collaborative Research: Bipolar Coupling of late Quaternary Ice Sheet Variability ,UKRI| Instantaneous and inverse coupling between the South and North Atlantic during the last glacial period ,EC| PAST4FUTURE ,EC| TRACE ,UKRI| Changes in ocean circulation and the global carbon cycle during the last interglacial-glacial transition: Marine Isotope Stage 5a to 4Authors: Waelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; +59 AuthorsWaelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel B; Dokken, Trond; Hajdas, Irka; Wacker, Lukas; Abbott, Peter M; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza Spadano; Arz, Helge Wolfgang; Austin, William EN; Came, Rosemarie E; Carlson, Anders Eskil; Collins, James A; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad A; Jung, Simon; Knutz, Paul Cornils; Lebreiro, Susana Martin; Lund, David C; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M; Martínez Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia Osorio; Nürnberg, Dirk; Oppo, Delia W; Peck, Victoria L; Peeters, Frank J C; Penaud, Aurélie; Portilho-Ramos, Rodrigo Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goñi, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C; Skonieczny, Charlotte; Thornalley, David J R; Toucanne, Samuel; Van Rooij, David; Vidal, Laurence; Voelker, Antje H L; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin;Rapid changes in ocean circulation and climate have been observed in marine-sediment and ice cores over the last glacial period and deglaciation, highlighting the non-linear character of the climate system and underlining the possibility of rapid climate shifts in response to anthropogenic greenhouse gas forcing. To date, these rapid changes in climate and ocean circulation are still not fully explained. One obstacle hindering progress in our understanding of the interactions between past ocean circulation and climate changes is the difficulty of accurately dating marine cores. Here, we present a set of 92 marine sediment cores from the Atlantic Ocean for which we have established age-depth models that are consistent with the Greenland GICC05 ice core chronology, and computed the associated dating uncertainties, using a new deposition modeling technique. This is the first set of consistently dated marine sediment cores enabling paleoclimate scientists to evaluate leads/lags between circulation and climate changes over vast regions of the Atlantic Ocean. Moreover, this data set is of direct use in paleoclimate modeling studies.
PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.899490&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2019 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, EC | OCEANQUANTANR| RETRO ,EC| OCEANQUANTAuthors: Waelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; +59 AuthorsWaelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel B; Dokken, Trond; Hajdas, Irka; Wacker, Lukas; Abbott, Peter M; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza Spadano; Arz, Helge Wolfgang; Austin, William EN; Came, Rosemarie E; Carlson, Anders Eskil; Collins, James A; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad A; Jung, Simon; Knutz, Paul Cornils; Lebreiro, Susana Martin; Lund, David C; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M; Martínez Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia Osorio; Nürnberg, Dirk; Oppo, Delia W; Peck, Victoria L; Peeters, Frank J C; Penaud, Aurélie; Portilho-Ramos, Rodrigo Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goñi, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C; Skonieczny, Charlotte; Thornalley, David J R; Toucanne, Samuel; Van Rooij, David; Vidal, Laurence; Voelker, Antje H L; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin;Undatable run on 2019-06-17 12:36:02. nsim=10000 bootpc=10 xfactor=0.1 combine=Yes
PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.905254&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.905254&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2019 EnglishPublisher:PANGAEA Funded by:SNSF | Quantifying changes in th..., ANR | RETRO, EC | ACCLIMATE +1 projectsSNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,ANR| RETRO ,EC| ACCLIMATE ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphereAuthors: Waelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; +59 AuthorsWaelbroeck, Claire; Lougheed, Bryan C; Vázquez Riveiros, Natalia; Missiaen, Lise; Pedro, Joel B; Dokken, Trond; Hajdas, Irka; Wacker, Lukas; Abbott, Peter M; Dumoulin, Jean-Pascal; Thil, François; Eynaud, Frédérique; Rossignol, Linda; Fersi, Wiem; Albuquerque, Ana Luiza Spadano; Arz, Helge Wolfgang; Austin, William EN; Came, Rosemarie E; Carlson, Anders Eskil; Collins, James A; Dennielou, Bernard; Desprat, Stéphanie; Dickson, Alex; Elliot, Mary; Farmer, Christa; Giraudeau, Jacques; Gottschalk, Julia; Henderiks, Jorijntje; Hughen, Konrad A; Jung, Simon; Knutz, Paul Cornils; Lebreiro, Susana Martin; Lund, David C; Lynch-Stieglitz, Jean; Malaizé, Bruno; Marchitto, Thomas M; Martínez Méndez, Gema; Mollenhauer, Gesine; Naughton, Filipa; Nave, Silvia Osorio; Nürnberg, Dirk; Oppo, Delia W; Peck, Victoria L; Peeters, Frank J C; Penaud, Aurélie; Portilho-Ramos, Rodrigo Costa; Repschläger, Janne; Roberts, Jenny; Rühlemann, Carsten; Salgueiro, Emilia; Sanchez Goñi, Maria Fernanda; Schönfeld, Joachim; Scussolini, Paolo; Skinner, Luke C; Skonieczny, Charlotte; Thornalley, David J R; Toucanne, Samuel; Van Rooij, David; Vidal, Laurence; Voelker, Antje H L; Wary, Mélanie; Weldeab, Syee; Ziegler, Martin;Undatable run on 2019-06-17 12:40:08. nsim=10000 bootpc=10 xfactor=0.1 combine=Yes
PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2019License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.905267&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2018 English Funded by:EC | ACCLIMATE, SNSF | SeaO2 - Past changes in S..., SNSF | Quantifying changes in th... +1 projectsEC| ACCLIMATE ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphere ,SNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,ANR| RETROBurckel Pierre; Waelbroeck Claire; Luo Yiming; Roche Didier M; Pichat Sylvain; Jaccard Samuel L; Gherardi Jeanne-Marie; Govin Aline; Lippold Jörg; Thil François;We reconstruct the geometry and strength of the Atlantic meridional overturning circulation during the Heinrich stadial 2 and three Greenland interstadials of the 20–50 ka period based on the comparison of new and published sedimentary 231Pa / 230Th data with simulated sedimentary 231Pa / 230Th. We show that the deep Atlantic circulation during these interstadials was very different from that of the Holocene. Northern-sourced waters likely circulated above 2500 m depth, with a flow rate lower than that of the present-day North Atlantic deep water (NADW). Southern-sourced deep waters most probably flowed northwards below 4000 m depth into the North Atlantic basin and then southwards as a return flow between 2500 and 4000 m depth. The flow rate of this southern-sourced deep water was likely larger than that of the modern Antarctic bottom water (AABW). Our results further show that during Heinrich stadial 2, the deep Atlantic was probably directly affected by a southern-sourced water mass below 2500 m depth, while a slow, southward-flowing water mass originating from the North Atlantic likely influenced depths between 1500 and 2500 m down to the equator.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=r39633d1e8c4::e4f0e7a9a42ea3580c0b031de45b4fe5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=r39633d1e8c4::e4f0e7a9a42ea3580c0b031de45b4fe5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2018 EnglishPublisher:PANGAEA Funded by:EC | OCEANQUANT, EC | ACCLIMATE, ANR | RETROEC| OCEANQUANT ,EC| ACCLIMATE ,ANR| RETROAuthors: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894678&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894678&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2018 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, EC | OCEANQUANTANR| RETRO ,EC| OCEANQUANTAuthors: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894683&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894683&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Collection , Dataset 2018 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, EC | ACCLIMATEANR| RETRO ,EC| ACCLIMATEAuthors: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Missiaen, Lise;Thanks to its optimal location on the northern Brazilian margin, core MD09-3257 records both ocean circulation and atmospheric changes. The latter occur locally in the form of increased rainfall on the adjacent continent during the cold intervals recorded in Greenland ice and northern North Atlantic sediment cores (i.e. Greenland stadials). These rainfall events are recorded in MD09-3257 as peaks in ln(Ti/Ca). New sedimentary Pa/Th data indicate that mid-depth western equatorial water mass transport decreased during all of the Greenland stadials of the last 40 kyr. Using cross-wavelet transforms and spectrogram analysis, we assess the relative phase between the MD09-3257 sedimentary Pa/Th and ln(Ti/Ca) signals. We show that decreased water mass transport between a dept of ~1300 and 2300 m in the western equatorial Atlantic preceded increased rainfall over the adjacent continent by 120 to 400 y at Dansgaard-Oeschger (D-O) frequencies, and by 280 to 980 y at Heinrich-like frequencies.We suggest that the large lead of ocean circulation changes with respect to changes in tropical South American precipitation at Heinrich-like frequencies is related to the effect of a positive feedback involving iceberg discharges in the North Atlantic. In contrast, the absence of widespread ice rafted detrital layers in North Atlantic cores during D-O stadials supports the hypothesis that a feedback such as this was not triggered in the case of D-O stadials, with circulation slowdowns and subsequent changes remaining more limited during D-O stadials than Heinrich stadials. Supplement to: Waelbroeck, Claire; Pichat, Sylvain; Böhm, Evelyn; Lougheed, Bryan C; Faranda, Davide; Vrac, Mathieu; Missiaen, Lise; Vázquez Riveiros, Natalia; Burckel, Pierre; Lippold, Jörg; Arz, Helge Wolfgang; Dokken, Trond; Thil, François; Dapoigny, Arnaud (2018): Relative timing of precipitation and ocean circulation changes in the western equatorial Atlantic over the last 45 kyr. Climate of the Past, 14(9), 1315-1330
PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894684&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA - Data Publi... arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2018License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.894684&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Collection , Dataset 2016 EnglishPublisher:PANGAEA Funded by:ANR | RETRO, SNSF | Quantifying changes in th..., EC | ACCLIMATE +1 projectsANR| RETRO ,SNSF| Quantifying changes in the rate of North Atlantic Deep and Intermediate Water formation associated with abrupt climate changes during the late Quaternary ,EC| ACCLIMATE ,SNSF| SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphereBurckel, Pierre; Waelbroeck, Claire; Luo, Yiming; Roche, Didier M; Pichat, Sylvain; Jaccard, Samuel L; Gherardi, Jeanne-Marie; Govin, Aline; Lippold, Jörg; Thil, François;We reconstruct the geometry and strength of the Atlantic Meridional Overturning Circulation during Heinrich Stadial 2 and three Greenland interstadials of the 20-50 ka period based on the comparison of new and published sedimentary 231Pa/230Th data with simulated sedimentary 231Pa/230Th. We show that the deep Atlantic circulation during these interstadials was very different from that of the Holocene. Northern-sourced waters likely circulated above 2500 m depth, with a flow rate lower than that of the present day North Atlantic Deep Water (NADW). Southern-sourced deep waters most probably flowed northwards below 4000 m depth into the North Atlantic basin, and then southwards as a return flow between 2500 and 4000 m depth. The flow rate of this southern-sourced deep water was likely larger than that of the modern Antarctic Bottom Water (AABW). Our results further show that during Heinrich Stadial 2, the deep Atlantic was probably directly affected by a southern-sourced water mass below 2500 m depth, while a slow southward flowing water mass originating from the North Atlantic likely influenced depths between 1500 and 2500 m down to the equator. Supplement to: Burckel, Pierre; Waelbroeck, Claire; Luo, Yiming; Roche, Didier M; Pichat, Sylvain; Jaccard, Samuel L; Gherardi, Jeanne-Marie; Govin, Aline; Lippold, Jörg; Thil, François (2016): Changes in the geometry and strength of the Atlantic meridional overturning circulation during the last glacial (20–50 ka). Climate of the Past, 12(11), 2061-2075
PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . Collection . 2016License: CC BYPANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2016License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.865401&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert PANGAEA arrow_drop_down PANGAEA - Data Publisher for Earth and Environmental ScienceDataset . Collection . 2016License: CC BYPANGAEA - Data Publisher for Earth and Environmental ScienceCollection . 2016License: CC BYData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1594/pangaea.865401&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu