85c30cc3-6ce6-4a3d-be60-0bddbe69e5bb eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2022-12-21 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Proxy data from the Emerald Lake sediment record on Macquarie Island 2022-12-21 creation 2022-12-21 revision 2022-12-21 publication 2022-12-21 released 1 https://doi.org/10.5285/85c30cc3-6ce6-4a3d-be60-0bddbe69e5bb doi GB/NERC/BAS/PDC/01699 https://data.bas.ac.uk/ NE/K004514/1 award Please cite this item as: short doi:10/jzr3 The dataset comprises of proxy data from the Emerald Lake sediment record dating back to 12.1ka BP were extracted on Macquarie Island. Three independent methods to reconstruct past changes in Southern Hemisphere Westerly wind (SHW) intensity. Core scanning (ITRAX XRF) and multispectral data (SPECIM) originally published in Saunders et al. (2018) have been updated to the 2020 radiocarbon calibration curve. This research was funded by NERC Standard grant NE/K004514/1 (D.A.H., S.J.R., L.S.), Swiss National Science Foundation Ambizione Postdoctoral Research Fellowship PZ00P2_136835/1 (K.M.S.), Swiss National Science Foundation Grant 200021_172586 (M.G.) and Australian Antarctic Science grants 3117 and 4156 (K.M.S.). K.M.S. was also supported by PhD funding as part of grant 2663 to A. McMinn, an Australian Postgraduate Award (2004-2008) and an Australian Institute of Nuclear Science and Engineering Postgraduate Research Award. No credit. completed Roberts, Stephen British Antarctic Survey Researcher author Saunders, Krystyna University of Bern Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Paleoclimate > Land Records > Radiocarbon EARTH SCIENCE > Paleoclimate > Land Records > Sediments theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Lake sediments Macquarie Island Radiocarbon dating theme Emerald Lake, Macquarie Island Macquarie Island place Geology theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions Roberts, S., & Saunders, K. (2023). Proxy data from the Emerald Lake sediment record on Macquarie Island (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/85C30CC3-6CE6-4A3D-BE60-0BDDBE69E5BB otherRestrictions No restrictions apply url url crossReference url url crossReference textTable eng utf8 geoscientificInformation 158.8809 158.8809 -54.54653 -54.54653 2006-11-01 2013-11-30 It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor text/csv text/plain application/pdf bytes 2411725 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=85c30cc3-6ce6-4a3d-be60-0bddbe69e5bb WWW:LINK-1.0-http--link Get Data Download data download bytes 2411725 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=85c30cc3-6ce6-4a3d-be60-0bddbe69e5bb WWW:LINK-1.0-http--link Get Data Download data download bytes 2411725 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=85c30cc3-6ce6-4a3d-be60-0bddbe69e5bb WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: A series of lake sediment cores dating back to c. 12.1 ka BP were extracted from Emerald Lake on the west coast of sub-Antarctic Macquarie Island. We applied three independent methods to reconstruct past changes in Southern Hemisphere Westerly wind (SHW) intensity. 1) To reconstruct past sea salt aerosol inputs, we developed a method to track past changes in lake water conductivity (a function of sea salt aerosol input) using diatom-based inference models. 2) ITRAX XRF core scanning (XRFCS) analysis was used to track inputs of minerogenic aerosols into the lake, focusing on Ti as the most widely used indicator of allochthonous inputs 3) Cores were scanned using a Specim hyperspectral camera, which measures reflected optical properties between wavelengths from 400-1000 nm. The ratio of reflectance between 850 and 900 nm (R850/R900) was used as an additional indicator of minerogenic inputs We have updated the age depth model in Saunders et al. (2018) and applied this update to these datasets. Recalibration and age depth models have been updated to 2020 calibration curves (Sh20) in the R package BACON v. 2.5 for Bayesian age-depth modelling (Blaauw and Christen, 2011). Data quality: Age data includes minimum and maximum 95% confidence interval ranges. asNeeded completed