SST gradient and reconstructed Antarctic Circumpolar Current latitude change in the Southern Indian Ocean over the last 150kyr

Dataset

DOI

We report a quantitative and continuous record of the ACC latitude over the last glacial-interglacial cycle derived from biomarker-based reconstructions of surface layer temperature gradient in the Southern Indian Ocean. The surface layer temperature gradient is calculated from two downcore surface layer temperature series reconstructed from TEX86L at sediment cores MD11-3353 and MD11-3357 from the Indian Southern Ocean. The TEX86L-temperature calibration function is revised based on the global core-top data compilation of Tierney and Tingley (2015): SST L (0-200m integrated, °C) = 55.84*TEX86L + 38.15. The past ACC latitude is derived using a quantitative framework that simulates the effect of ACC migration on Southern Ocean surface temperature gradient.

Identifier
DOI	https://doi.pangaea.de/10.1594/PANGAEA.967639
Related Identifier	IsSupplementTo https://doi.org/10.1038/s43247-024-01216-x
Metadata Access	https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.967639

Provenance
Creator	Ai, Xuyuan E ; Thöle, Lena M ; Auderset, Alexandra ; Schmitt, Mareike; Moretti, Simone ; Studer, Anja S ; Michel, Elisabeth ; Wegmann, Martin; Mazaud, Alain; Bijl, Peter K ; Sigman, Daniel M ; Martínez-García, Alfredo; Jaccard, Samuel L
Publisher	PANGAEA
Publication Year	2024
Funding Reference	European Commission https://doi.org/10.13039/501100000780 Crossref Funder ID 802835 https://cordis.europa.eu/project/id/802835 Paleoceanography of the Ice-proximal Southern Ocean during Past Warm Climates (OceaNice); National Science Foundation https://doi.org/10.13039/100000001 Crossref Funder ID PLR-1401489 ; Swiss National Science Foundation https://doi.org/10.13039/501100001711 Crossref Funder ID 144811 https://data.snf.ch/grants/grant/144811 SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphere; Swiss National Science Foundation https://doi.org/10.13039/501100001711 Crossref Funder ID 168625 https://data.snf.ch/grants/grant/168625 Southern Ocean Paleoceanography and glacial-interglacial changes in the efficiency of the biological pump; Swiss National Science Foundation https://doi.org/10.13039/501100001711 Crossref Funder ID 172915 https://data.snf.ch/grants/grant/172915 SeaO2 - Past changes in Southern Ocean overturning circulation - implications for the partitioning of carbon and oxygen between the ocean and the atmosphere
Rights	Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess	false

Representation
Resource Type	Bundled Publication of Datasets; Collection
Format	application/zip
Size	3 datasets
Discipline	Earth System Research
Spatial Coverage	(68.385W, -50.567S, 80.430E, -44.680N)
Temporal Coverage Begin	2011-01-30T00:00:00Z
Temporal Coverage End	2011-02-08T00:00:00Z