Struve, Torben; Lamy, Frank; Gäng, Frederik; Klages, Johann Philipp; Kuhn, Gerhard; Esper, Oliver; Lembke-Jene, Lester; Winckler, Gisela (2025): Diatom-based summer sea surface temperatures (SSST) and winter sea ice cover (WSI) reconstructions for sediment core PS58/270-5 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983060 (DOI registration in progress), In: Struve, T et al. (2025): Sediment composition and particle flux reconstructions for the Southeast Pacific Antarctic Zone [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.982690
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Published: 2025-12-19
Abstract:
This dataset contains summer sea surface temperatures (SSST) and winter sea ice cover (WSI) reconstructions for core PS58/270-5 collected during R/V Polarstern expedition ANT-XVIII/5a in 2001 (Miller, 2001). The SSST and WSI were calculated using transfer functions for diatom assemblages based on the Imbrie and Kipp method (IKM) (Esper and Gersonde, 2014a) and the modern analogue technique (MAT) (Esper and Gersonde, 2014b), respectively. The reported age model is derived from diatom-based stratigraphy and correlation of the SSST and Fe content with EDC ice core data (doi:10.1594/PANGAEA.983158). This dataset uses a revised stratigraphy as section 1995-2095 cm was curated in reverse order.
Keyword(s):
Related to:
Struve, Torben; et al. (accepted): South Pacific carbon uptake controlled by West Antarctic Ice Sheet dynamics.
Struve, Torben; Lamy, Frank; Gäng, Frederik; Klages, Johann Philipp; Kuhn, Gerhard; Esper, Oliver; Lembke-Jene, Lester; Winckler, Gisela (2025): Age model for sediment core PS58/270-5 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983158
Source:
Benz, Verena; Esper, Oliver; Gersonde, Rainer; Lamy, Frank; Tiedemann, Ralf (2016): Last Glacial Maximum sea surface temperature and sea-ice extent in the Pacific sector of the Southern Ocean. Quaternary Science Reviews, 146, 216-237, https://doi.org/10.1016/j.quascirev.2016.06.006
Esper, Oliver; Benz, Verena; Gersonde, Rainer (2016): Diatoms abundance in sediment core PS58/270-5 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.860926
References:
Esper, Oliver; Gersonde, Rainer (2014): New tools for the reconstruction of Pleistocene Antarctic sea ice. Palaeogeography, Palaeoclimatology, Palaeoecology, 399, 260-283, https://doi.org/10.1016/j.palaeo.2014.01.019 (2014b)
Esper, Oliver; Gersonde, Rainer (2014): Quaternary surface water temperature estimations: New diatom transfer functions for the Southern Ocean. Palaeogeography, Palaeoclimatology, Palaeoecology, 414, 1-19, https://doi.org/10.1016/j.palaeo.2014.08.008 (2014a)
Miller, Heinrich (2001): Expedition Programme No. 59. RV POLARSTERN. ANT XVIII/5a. ANT XVII1/5b. Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung Bremerhaven (in German), hdl:10013/epic.37242.d001
Funding:
German Research Foundation (DFG), grant/award no. 412785502: Glacial - Interglacial Changes in Dust Supply to the Pacific Southern Ocean
Coverage:
Latitude: -62.028000 * Longitude: -116.123000
Date/Time Start: 2001-03-19T18:34:00 * Date/Time End: 2001-03-19T20:01:00
Minimum DEPTH, sediment/rock: 0.02 m * Maximum DEPTH, sediment/rock: 22.82 m
Event(s):
PS58/270-5 * Latitude: -62.028000 * Longitude: -116.123000 * Date/Time Start: 2001-03-19T18:34:00 * Date/Time End: 2001-03-19T20:01:00 * Elevation: -4981.0 m * Recovery: 22.95 m * Location: Southeast Pacific * Campaign: ANT-XVIII/5a (PS58) * Basis: Polarstern * Method/Device: Piston corer (BGR type) (KL) * Comment: 23 core sections: 0-0.95, 0.95-1.95, 1.95-2.95, 2.95-3.97, 3.97-4.97, 4.97-5.97, 5.97-6.97, 6.97-7.97, 7.97-8.97, 8.97-9.97, 9.97-10.97, 10.97-11.97, 11.97-12.97, 12.97-13.95, 13.95-14.95, 14.95-15.95, 15.95-16.95, 16.95-17.95, 17.95-18.95, 18.95-19.95, 19.95-20.95, 21.95-22.95 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Esper, Oliver | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Esper, Oliver | Geocode | |
| 3 | AGE | Age | ka BP | Struve, Torben | Correlation | Geocode – See also doi:10.1594/PANGAEA.983158 and Struve et al. (under review) |
| 4 | Sea surface temperature, summer | SST sum | °C | Esper, Oliver | Transfer function, IKM – D336/29/3q | Diatom dataset: Esper et. al (2016) and Benz et al. (2016); calibration: Esper and Gersonde (2014a) |
| 5 | Sea surface temperature, summer, uncertainty | SST sum unc | ± | Esper, Oliver | Transfer function, IKM – D336/29/3q | RMSEP: Root Mean Square Error of Prediction; Esper and Gersonde (2014a) |
| 6 | Communality | Commun | Esper, Oliver | Analogue quality measure | <0.5 = non-analogue between reference dataset and downcore assemblage; Esper and Gersonde (2014a) | |
| 7 | Sea ice concentration, winter | Sea ice con winter | % | Esper, Oliver | Transfer function, MAT-D274/28/4an | MAT, 4 analogues; Diatom dataset: Esper et. al (2016) and Esper and Benz et al. (2016); calibration: Esper and Gersonde (2014b) |
| 8 | Sea ice concentration, winter, standard deviation | Sea ice con winter std dev | ± | Esper, Oliver | Transfer function, MAT-D274/28/4an | 1SD; RMSEP of calibration = 5.5%; RMSEP: Root Mean Square Error of Prediction; Esper and Gersonde (2014b) |
| 9 | Dissimilarity index | DISS | Esper, Oliver | Analogue quality measure | threshold = 4.58, good analogues when <2.29; Esper and Gersonde (2014b) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1374 data points