Compilation of 220 sediment core δ¹³C data from the glacial Atlantic Ocean, supplement to: Hesse, Tilman; Butzin, Martin; Bickert, Torsten; Lohmann, Gerrit (2011): A model-data comparison of d13C in the glacial Atlantic Ocean. Paleoceanography, 26, PA3220

DOI

We compare a compilation of 220 sediment core d13C data from the glacial Atlantic Ocean with three-dimensional ocean circulation simulations including a marine carbon cycle model. The carbon cycle model employs circulation fields which were derived from previous climate simulations. All sediment data have been thoroughly quality controlled, focusing on epibenthic foraminiferal species (such as Cibicidoides wuellerstorfi or Planulina ariminensis) to improve the comparability of model and sediment core carbon isotopes. The model captures the general d13C pattern indicated by present-day water column data and Late Holocene sediment cores but underestimates intermediate and deep water values in the South Atlantic. The best agreement with glacial reconstructions is obtained for a model scenario with an altered freshwater balance in the Southern Ocean that mimics enhanced northward sea ice export and melting away from the zone of sea ice production. This results in a shoaled and weakened North Atlantic Deep Water flow and intensified Antarctic Bottom Water export, hence confirming previous reconstructions from paleoproxy records. Moreover, the modeled abyssal ocean is very cold and very saline, which is in line with other proxy data evidence.

We combined carbon isotope data from various compilations [Sarnthein et al., 1994, Bickert and Mackensen, 2004, Curry and Oppo, 2005, Marchal and Curry, 2008], and from the PANGAEA and NCDC databases (https://pangaea.de and http://www.ncdc.noaa.gov/paleo). As far as possible the original authors within the compilations were traced back and referenced. We only considered sediment cores containing Cibicidoides wuellerstorfi which is known to be the most reliable conserver of d13C (DIC) in the ocean [Woodruff et al., 1980, Belanger et al., 1981, Zahn et al., 1986, Hodell etal., 2001]. Some cores include a few other benthic species (Planulina ariminensis or Cibicidoides kullenbergi), which are also used in this study, as they are thought to have an epibenthic habitat, too [Lutze and Thiel, 1989].For each core we calculated the average d13C value of the Late Holocene and Last Glacial Maximum time slice. Our definitions of the Late Holocene and the Last Glacial Maximum are 0-4 ka BP and 18-24 ka BP, respectively. Phytodetritus corrections like those used in Bickert and Mackensen [2004] were not applied to any of the data.

Identifier
DOI https://doi.org/10.1594/PANGAEA.758334
Related Identifier https://doi.org/10.1029/2010PA002085
Related Identifier https://doi.org/10.1006/qres.1998.1992
Related Identifier https://doi.org/10.1016/S0277-3791(00)00098-6
Related Identifier https://doi.org/10.1029/94PA03058
Related Identifier https://doi.org/10.1029/94PA03353
Related Identifier https://doi.org/10.1016/S0967-0645(98)00098-8
Related Identifier https://doi.org/10.1016/0012-821X(85)90154-2
Related Identifier https://doi.org/10.1038/330035a0
Related Identifier https://doi.org/10.1073/pnas.0905771106
Related Identifier https://doi.org/10.1029/PA003i003p00317
Related Identifier https://doi.org/10.1016/0033-5894(82)90071-0
Related Identifier https://doi.org/10.1029/92PA00420
Related Identifier https://doi.org/10.1016/S0967-0645(02)00101-7
Related Identifier https://doi.org/10.1029/2002GC000367
Related Identifier https://doi.org/10.2312/reports-sfb313.1996.61
Related Identifier https://doi.org/10.1029/2004PA001029
Related Identifier https://doi.org/10.1029/2001GC000283
Related Identifier https://doi.org/10.1029/2005GC001226
Related Identifier https://doi.org/10.1126/science.283.5404.971
Related Identifier https://doi.org/10.1111/j.1502-3885.2006.tb01112.x
Related Identifier https://doi.org/10.1016/0012-821X(85)90072-X
Related Identifier https://doi.org/10.1029/2001GB001488
Related Identifier https://doi.org/10.1029/2008PA001637
Related Identifier https://doi.org/10.1016/S0012-821X(02)00708-2
Related Identifier https://doi.org/10.1016/0012-821X(87)90183-X
Related Identifier https://doi.org/10.1029/1999PA000436
Related Identifier https://doi.org/10.1029/96PA03133
Related Identifier https://doi.org/10.1126/science.259.5098.1148
Related Identifier https://doi.org/10.2973/odp.proc.sr.175.230.2001
Related Identifier https://doi.org/10.1029/2002PA000769
Related Identifier https://doi.org/10.1029/93PA03301
Related Identifier https://doi.org/10.1016/S0921-8181(02)00197-2
Related Identifier https://doi.org/10.1029/2003PA000983
Related Identifier https://doi.org/10.1029/95PA01166
Related Identifier https://doi.org/10.2312/reports-gpi.1991.46
Related Identifier https://doi.org/10.1038/ngeo289
Related Identifier https://doi.org/10.1029/1998PA900013
Related Identifier https://doi.org/10.1007/s003820050321
Related Identifier https://doi.org/10.2312/reports-gpi.1991.45
Related Identifier https://doi.org/10.1029/1999PA000454
Related Identifier https://doi.org/10.1029/1999PA900027
Related Identifier https://doi.org/10.1016/S0012-821X(02)00613-1
Related Identifier https://doi.org/10.1029/PA001i001p00027
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.758334
Provenance
Creator Hesse, Tilman; Butzin, Martin; Bickert, Torsten; Lohmann, Gerrit
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2011
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1646 data points
Discipline Earth System Research
Spatial Coverage (-80.130W, -46.764S, 17.633E, 82.024N); Canarias Sea; North Atlantic Ocean; Benguela Current, South Atlantic Ocean; South Atlantic Ocean; Caribbean Sea/RIDGE; North Atlantic/PLATEAU; Vema Channel; Northeast Atlantic; Walvis Ridge, Southeast Atlantic Ocean; Walvis Ridge; Guinea Basin; Equatorial Atlantic; Brazil Basin; Cape Basin; Hunter Channel; Eastern Rio Grande Rise; Mid Atlantic Ridge; East Brazil Basin; Amazon Fan; Namibia Continental Margin; Namibia continental slope; South African margin; Southwest Walvis Ridge; Angola Basin; Argentine Basin; Rio Grande Rise; NE-Brazilian continental margin; Southern Cape Basin; Northern Cape Basin; Agadir Canyon; Ceara Rise; East Atlantic; Atlantic Ocean; North Atlantic; off West Africa; eastern Romanche Fracture Zone; Sierra Leone Basin/Guinea Basin; Biscaya; Arctic Ocean; Norwegian Sea; Greenland Sea; Walvis Bay/Namibia; Caribbean Sea; Porto Seamount; Providence Channel; Meteor Rise; Agulhas Basin; Yermak Plateau
Temporal Coverage Begin 1957-05-19T00:00:00Z
Temporal Coverage End 2005-06-24T01:23:00Z