PANGAEA_993811 A 13,000-year reconstruction of Southern Hemisphere Westerlies using South Atlantic pollen and plant wax isotopes Spoth-Ascencao, Meghan; Hall, Brenda L; Diefendorf, Aaron F; Lowell, Thomas V; Russell, Joellen; Corcoran, Megan C; Brickle, Paul; Gill, Jacquelyn A 13,000-year reconstruction of Southern Hemisphere Westerlies using South Atlantic pollen and plant wax isotopes 2026-04-27 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993811 Earth Science geoscientificInformation alkanes Biomarker Lake sediment core Long-chain n-alkanes Pollen South Altantic south westerly wind Vegetation change Vegetation composition Complete -51.696367 -51.696367 -58.826867 -58.826867 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 7 datasets application/zip Spoth-Ascencao, Meghan; Hall, Brenda L; Gill, Jacquelyn; et al. (accepted): A 13,000-year record of the Southern Hemisphere Westerlies inferred from pollen and plant wax isotopes from the South Atlantic. Paleoceanography and Paleoclimatology Spoth-Ascencao, Meghan; Hall, Brenda L; Lowell, Thomas V; Diefendorf, Aaron F; Corcoran, Megan C; Brickle, Paul (2023): Tracking the southern hemisphere westerlies during and since the last glacial maximum with multiproxy lake records from the Falkland Islands (52 °S). Quaternary Science Reviews, 311, 108135, https://doi.org/10.1016/j.quascirev.2023.108135

The pollen assemblage record from Tarn 2 (600 m asl), East Falkland spans 2,300 to 12,700 cal BP. Samples were processed, IDed, and counted with quantitative black ceramic microspheres at the University of Maine. The assemblage has 17 taxa identified with Nothofagus, Podocarpus, and Ephedra noted as non-native to the local island ecology. Data is presented as raw counts per slide, percentage (%) of the upland sum, pollen concentration (grains/cm3), and pollen accumulation rates (grains/cm2/yr). The upland sum includes all taxa except trilete, monolete, and Cyperaceae (due to aquatic). The plant wax biomarkers (long chain n-alkanes) from Tarn 2 also spans 2,300 to 12,700 cal BP. Samples were processed at the University of Cincinnati. Alkanes were isolated by chain length with concentration measured as ug/g of sediment. For each chain length, stable isotopes were measure then reported as VSMOW for hydrogen (dD) and VDPB (d13C) isotopes. The age model for Tarn 2 is constrained by seven macrofossil radiocarbon dates. The associated age model for the pollen assemblage accumulation rates was constructed with INTCAL20 under R.Bacon. The age model is published in Spoth, M., Hall, B., Lowell, T., Diefendorf, A.F., Corcoran, M.C. and Brickle, P., 2023. Tracking the southern hemisphere westerlies during and since the last glacial maximum with multiproxy lake records from the Falkland Islands (52 S). Quaternary Science Reviews, 311, p.108135 (doi:10.1016/j.quascirev.2023.108135). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993811"!

https://doi.org/10.1016/j.quascirev.2023.108135 Tracking the southern hemisphere westerlies during and since the last glacial maximum with multiproxy lake records from the Falkland Islands (52 °S) DIF 9.4 2026-04-27 2026-04-27