Reconstruction of sea-surface temperatures from assemblages of planktonic foraminifera: multi-technique approach based on geographically constrained calibration data sets and its application to glacial Atlantic and Pacific Oceans

Kučera, Michal; Weinelt, Mara; Kiefer, Thorsten; Pflaumann, Uwe; Hayes, Angela; Weinelt, Martin; Chen, Min‐Te; Mix, Alan C; Barrows, Timothy T.; Cortijo, Elsa; Duprat, J.; Juggins, Steve; Waelbroeck, C.

doi:10.1016/j.quascirev.2004.07.014

Cited by 419 publications

(454 citation statements)

References 84 publications

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“…The reconstructions of the MARGO project [Kucera et al, 2005] provide more recent reconstructions of Atlantic SSTs at the LGM, suggesting the CLIMAP values (and our modeled values) are too cold in the northern North Atlantic and Nordic Seas. The CLIMAP LGM time slice has not been precisely defined and possibly includes Heinrich events, while the MARGO data is more accurately defined as from the 19-23 ka BP period, and therefore excludes any influence of Heinrich events.…”

Section: Climate Modelmentioning

confidence: 59%

“…However, the winter limits of near freezing ocean surface temperatures in the model between 40-50°N are still further south than in the MARGO reconstructions. The modeled sea ice distribution produces sea ice all year round in the Nordic Seas, while this area is thought to have been seasonally ice-free [Pflaumann et al, 2003;Kucera et al, 2005], which also indicates our model is too cold in the northern North Atlantic. Other coupled atmosphere-ocean models from the PMIP project have similar problems obtaining LGM-PD temperature anomalies similar to those of MARGO [Kageyama et al, 2006].…”

Section: Climate Modelmentioning

confidence: 91%

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Sensitivity of the glacial ocean to Heinrich events from different iceberg sources, as modeled by a coupled atmosphere‐iceberg‐ocean model

2008

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[1] We introduce explicit icebergs from a dynamic and thermodynamic iceberg model into an intermediate complexity climate model, which includes the coupled atmosphere-ocean system. This modeling approach allows iceberg meltwater to be injected into the ocean on the basis of thermodynamical considerations along the iceberg trajectories. Icebergs are seeded from known ice sheets in both hemispheres. Adding icebergs to the present-day climate model has a minimal impact, but during the Last Glacial Maximum (LGM), Atlantic overturning strength is reduced by a third, while producing a model state that is consistent with a steady state climate. We test the sensitivity of the model at the LGM to additional Heinrich event-scale fluxes of icebergs from three possible sources: Hudson Strait, the Gulf of Saint Lawrence, and the Norwegian Channel Ice Stream (NCIS). The sensitivity of the ocean is similar for all locations, with differences dominated by the length of the iceberg meltwater pathways to the main ocean convection region. The NCIS events result in more variability and a distinctly different, more northerly, salinity anomaly. We compare these results to a more typical modeling approach, whereby meltwater is injected directly into the ocean at the iceberg source locations, and find that these floods overestimate the oceanic response compared to the iceberg events. Our results suggest that 0.3-0.4 Sv of additional freshwater flux, either as icebergs or freshwater, is required to shut down the North Atlantic meridional overturning, a larger freshwater flux than sometimes suggested because of the localized nature of the release of the freshwater.Citation: Levine, R. C., and G. R. Bigg (2008), Sensitivity of the glacial ocean to Heinrich events from different iceberg sources, as modeled by a coupled atmosphere-iceberg-ocean model, Paleoceanography, 23, PA4213,

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Section: Climate Modelmentioning

confidence: 59%

Section: Climate Modelmentioning

confidence: 91%

Sensitivity of the glacial ocean to Heinrich events from different iceberg sources, as modeled by a coupled atmosphere‐iceberg‐ocean model

2008

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“…Records are compared from 26 sites ( Figure 1, Table 1) each of which is of a resolution appropriate for the detection of orbital variability and have astronomically calibrated age models. The SST records have been generated using the alkenone-derived proxy, U K 37 ' (Brassell et al, 1986;Müller et al, 1998;Prahl et al, 1988), Mg/Ca ratios in planktonic foraminifera Lea et al, 1999;Lea et al, 2000), or transfer function outputs from planktonic foraminifera assemblages (Imbrie and Kipp, 1971;Kucera et al, 2005;Vincent and Berger, 1981).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

“…Transfer functions seek to quantify the environmental variables that determine the assemblages of planktonic foraminifera, including SST, salinity and thermocline depth (Imbrie and Kipp, 1971;Jian et al, 2000;Kucera et al, 2005). Core-top calibrations are the preferred method of transfer function generation, as they incorporate temporal and spatial variability in production and diagenetic impacts upon initial sedimentation (Kucera et al, 2005).…”

Section: Transfer Functions In Planktonic Foraminiferamentioning

confidence: 99%

Pleistocene sea-surface temperature evolution: Early cooling, delayed glacial intensification, and implications for the mid-Pleistocene climate transition

McClymont

Sosdian

Rosell-Melé

et al. 2013

Earth-Science Reviews

177

172

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Citation for published item:w glymontD iFvF nd osdi nD FwF nd osellEwel¡ e D eF nd osenth lD F @PHIQA 9i rly leisto ene se Esurf e temper ture trends X e rly oolingD gl i l intensi( tionD nd impli tions for the midE leisto ene lim te tr nsitionF9D i rthEs ien e reviewsFD IPQ F ppF IUQEIWQF Further information on publisher's website:httpXGGdxFdoiForgGIHFIHITGjFe rs irevFPHIQFHRFHHT Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Earth-science reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this document. Changes may have been made to this work since it was submitted for publication. A de nitive version was subsequently published in Earth-science reviews. 123, 2013, 10.1016/j.earscirev.2013.04.006 Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.A C C E P T E D M A N U S C R I P T A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT2 AbstractThe mid-Pleistocene climate transition (MPT) is defined by the emergence of high amplitude, quasi-100 ka glacial-interglacial cycles from a prior regime of more subtle 41 ka cycles. This change in periodicity and amplitude cannot be explained by a change in 'external' astronomical forcing. Here, we review and integrate published records of sea-surface temperatures (SSTs) to assess whether a common global expression of the MPT in the surface ocean can be recognized, and examine our findings in light of mechanisms proposed to explain climate system reorganization across the MPT. Weshow that glacial-interglacial variability in SSTs is superimposed upon a longer-term cooling trend in oceanographic systems spanning the low-to high-latitudes. Regional Alongside the long-term SST cooling trends, quasi-100 ka cycles begin to emerge in both the SST and  18 O records at 1.2 Ma, and become dominant with the expansion of the ice-sheets at 0.9 Ma. We show that the intensified glacial-stage cooling is accompanied by...

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“…To reconstruct SSTs at Sites 975 and 958 and their Holocene reference cores (MD95-2043 and 658, respectively) a combined set of 279 samples from the Mediterranean Sea (Kucera et al, 2005 and references therein) and from the Iberian margin (Salgueiro et al, 2008) was added to the aforementioned data base. To reach consistency between foraminiferal counts produced by different researchers pink and white forms of Globigerinoides ruber, as well as Globigerinoides sacculifer and Globigerinoides trilobus, were grouped together.…”

Section: Planktic Foraminiferal Census Counts and Foraminiferal Sst Cmentioning

confidence: 99%

The meridional temperature gradient in the eastern North Atlantic during MIS 11 and its link to the ocean–atmosphere system

Kandiano

Bauch

Fahl

et al. 2012

Palaeogeography, Palaeoclimatology, Palaeoecology

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Temporal and spatial patterns in eastern North Atlantic sea-surface temperatures (SST) were reconstructed for marine isotope stage (MIS) 11c using a submeridional transect of five sediment cores. The SST reconstructions are based on planktic foraminiferal abundances and alkenone indices, and are supported by benthic and planktic stable isotope measurements, as well as by ice-rafted debris content in polar and middle latitudes. Additionally, the larger-scale dynamics of the precipitation regime over northern Africa and the western Mediterranean region was evaluated from iron concentrations in marine sediments off NW Africa and planktic δ 13 C in combination with analysis of planktic foraminiferal abundances down to the species level in the Mediterranean Sea. Compared to the modern situation, it is revealed that during entire MIS 11c sensu stricto (ss), i.e., between 420 and 398 ka according to our age models, a cold SST anomaly in the Nordic seas co-existed with a warm SST anomaly in the middle latitudes and the subtropics, resulting in steeper meridional SST gradients than during the Holocene. Such a SST pattern correlates well with a prevalence of a negative mode of the modern North Atlantic Oscillation. We suggest that our scenario might partly explain the longer duration of wet conditions in the northern Africa during MIS 11c compared to the Holocene.

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Reconstruction of sea-surface temperatures from assemblages of planktonic foraminifera: multi-technique approach based on geographically constrained calibration data sets and its application to glacial Atlantic and Pacific Oceans

Cited by 419 publications

References 84 publications

Sensitivity of the glacial ocean to Heinrich events from different iceberg sources, as modeled by a coupled atmosphere‐iceberg‐ocean model

Sensitivity of the glacial ocean to Heinrich events from different iceberg sources, as modeled by a coupled atmosphere‐iceberg‐ocean model

Pleistocene sea-surface temperature evolution: Early cooling, delayed glacial intensification, and implications for the mid-Pleistocene climate transition

The meridional temperature gradient in the eastern North Atlantic during MIS 11 and its link to the ocean–atmosphere system

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