A late Pleistocene dataset of Agulhas Current variability

Date 2020-12-11
Author(s) Simon Margit H.1, 2, Ziegler MartinORCID3, Barker StephenORCID4, Van Der Meer Marcel T. J.ORCID5, Schouten Stefan3, 5, Hall Ian R.4
Affiliation(s) 1 : NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Jahnebakken 5, 5007 Bergen, Norway
2 : SapienCE Centre for Early Sapiens Behaviour, AHKR Institute, University of Bergen, Norway
3 : Faculty of Geosciences, Utrecht University, 3584 CD Utrecht, Netherlands
4 : School of Earth and Ocean Sciences, Cardiff University, Cardiff, CF10 3AT, United Kingdom
5 : NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Organic Biogeochemistry, Den Burg, Netherlands
DOI 10.17882/70908
Publisher SEANOE
Keyword(s) Agulhas Current, Pleistocene, South African Climate
Abstract

The interoceanic transfer between the Indian and the Atlantic Oceans known as ‘Agulhas leakage’ is of global significance as it alters the Atlantic Meridional Overturning Circulation (AMOC) on different time scales. Variability in the Agulhas Current regime is key in shaping hydroclimate on the adjacent coastal areas of the African continent today as well as during the past. However, the lack of long, continuous records from the Agulhas Current core region dating beyond the last glacial cycle prevents elucidation of its role in regional and wider global climate changes. This is the first continuous record of hydrographic variability (SST; δ18Osw) from the Agulhas Current core region spanning the past 270,000 years. The data set is analytical sound and provides a solid age model. As such, it can be used by paleoclimate scientists, archaeologists, and climate modelers to evaluate e.g. linkages between the Agulhas Current system and AMOC dynamics, as well as connections between ocean heat transport and Southern African climate change in the past and its impact on human evolution.

Licence CC-BY
Acknowledgements We acknowledge funding from the European Commission 7th Framework Marie Curie People programme FP7/2007-2013 through funding of the Initial Training Network “GATEWAYS” (www.gateways itn.eu) under grant 238512 which funded the initial establishment of this data set. This work was partly supported by the Research Council of Norway, through its Centres of Excellence funding scheme, SFF Centre for Early Sapiens Behaviour (SapienCE), project number 262618. We thank Rainer Zahn, the captain, officers, and crew of RRS Charles Darwin cruise number 154, for which I.H. also gratefully acknowledge funding support from the Natural Environment Research Council. Furthermore, we acknowledge funding from the DAAD (German Academic Exchange Service) which supported the RISE (Research Internships in Science and Engineering) internship placement of Elisa Spreitzer who assisted together with Sebastian Steinig in carrying out laboratory and analytical work on core material CD154 10-06P. Alexandra Nederbragt, Lindsey Owen, and Anabel Morte-Ródenas provided technical support with the isotope and trace element analysis at Cardiff University.
Data
File Size Format Processing Access
Data file in the LiPD data format 21 KB LiPD Quality controlled data Open access
Data file in the excel template that can be converted into a LiPD file using the Python LiPD utilities 238 KB XLS, XLSX Quality controlled data Open access
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How to cite 

Simon Margit H., Ziegler Martin, Barker Stephen, Van Der Meer Marcel T. J., Schouten Stefan, Hall Ian R. (2020). A late Pleistocene dataset of Agulhas Current variability. SEANOE. https://doi.org/10.17882/70908


In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :


Simon Margit H., Ziegler Martin, Barker Stephen, van der Meer Marcel T. J., Schouten Stefan, Hall Ian R. (2020). A late Pleistocene dataset of Agulhas Current variability. Scientific Data, 7(1), -. https://doi.org/10.1038/s41597-020-00689-7