Sea surface temperature estimates from several sediment cores in the North Atlantic ...

Here, we have calculated new sea-surface temperature estimates over Dansgaard-Oeschger (DO) events 5-8 (c. 30-40 ka) from 14 sites in the North Atlantic, based on previously published planktic foraminifera relative abundance datasets. These proxy records suggest a large variability in North Atlantic...

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Bibliographic Details
Main Authors: Jensen, Mari F, Nummelin, Aleksi, Nielsen, Søren B, Sadatzki, Henrik, Sessford, Evangeline, Risebrobakken, Bjørg, Andersson, Carin, Voelker, Antje H L, Roberts, William H G, Pedro, Joel B, Born, Andreas
Format: Dataset
Language:English
Published: PANGAEA 2017
Subjects:
Event label
Sample code/label
DEPTH, sediment/rock
Depth, composite
Depth, top/min
Depth, bottom/max
AGE
Sea surface temperature
Composite Core
Drilling/drill rig
Gravity corer
Piston corer Kiel type
Gravity corer Kiel type
Calypso Corer
Calypso Square Core System
Kasten corer
Piston corer
DSDP/ODP/IODP sample designation
Maximum-likelihood estimation MLE
Reconstructed from the percentage of Neogloboquadrina pachyderma sinistral
Leg94
Leg162
M57
M17/2
JM96
MD123
MD141
MD101
MD114
SO82
PALEOCINAT
SU92
Glomar Challenger
Joides Resolution
Meteor 1964
Meteor 1986
Jan Mayen
Marion Dufresne 1995
Sonne
Le Suroît
Neogloboquadrina pachyderma
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.882403
https://doi.pangaea.de/10.1594/PANGAEA.882403
Description
Summary:Here, we have calculated new sea-surface temperature estimates over Dansgaard-Oeschger (DO) events 5-8 (c. 30-40 ka) from 14 sites in the North Atlantic, based on previously published planktic foraminifera relative abundance datasets. These proxy records suggest a large variability in North Atlantic sea-surface temperatures during DO-events of the last glacial period. However, proxy data availability is limited and cannot provide a full spatial picture of the oceanic changes. Therefore, we combine fully coupled, general circulation model simulations with the planktic foraminifera based sea-surface temperature reconstructions to obtain a broader spatial picture of the ocean state during DO-events 5-8. The resulting spatial sea-surface temperature patterns agree over a number of different general circulation models and simulations. We find that sea-surface temperature variability over the DO-events is characterized by colder conditions in the subpolar North Atlantic during stadials than during interstadials, ... : The SST calculations build on previously published foraminifera data (see 'Related to'). Where no sample interval is given, this information was not available. Mbsf and mcd depths are the same for all cores except the ODP and DSDP cores, where composite depth scales exist. The other sites are continuous cores and hence there is no need for composite depths. ...

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