621cf434-1517-4b36-887d-4285315af695 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 2023-02-21 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 Reconstructed temperature and tephra deposit age data from Yanou Lake, Fildes Peninsula, South Shetland Islands, northern Antarctic Peninsula 2023-02-21 creation 2023-02-21 revision 2023-02-21 publication 2023-02-21 released 1 https://doi.org/10.5285/621cf434-1517-4b36-887d-4285315af695 doi GB/NERC/BAS/PDC/01716 https://data.bas.ac.uk/ Please cite this item as: Short doi: 10/jzr5 The dataset comprises reconstructed temperature and tephra deposits age data from Yanou Lake, Fildes Peninsula, King George Island, South Shetland Islands. Data are calibrated to the 2020 radiocarbon calibration curves. The Antarctic and global glycerol dialkyl glycerol tetraether (GDGT) lipid biomarker temperature calibration are included. GDGT MSAT (mean summer air temperature) data was obtained by recalibrating the Pearson et al. (2011) global and Foster et al. (2016) Antarctic lake surface GDGT MSAT datasets. This dataset includes updates with new calibration of data originally published in Roberts et al. (2017). These revisions were funded as part of the IMCONet (FP7 IRSES, action no. 318718) program led by Doris Abele (AWI); the Natural Environment Research Council (NERC/BAS-CGS Grant no.81); the NERC/BAS science programmes CACHE-PEP: Natural climate variability - extending the Americas palaeoclimate transect through the Antarctic Peninsula to the pole and GRADES-QWAD: Quaternary West Antarctic Deglaciations. No credit. completed Roberts, Stephen British Antarctic Survey Researcher author Pearson, Emma Newcastle University Researcher author Gabriel, Imogen Royal Holloway University of London Researcher author Blockley, Simon Royal Holloway University of London Researcher author Foster, Louise British Antarctic Survey 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 > Stratigraphic Sequence EARTH SCIENCE > Paleoclimate > Ocean/Lake Records > Radiocarbon EARTH SCIENCE > Paleoclimate > Paleoclimate Reconstructions > Air Temperature Reconstruction 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 South Shetland islands radiocarbon dating stratigraphy temperature reconstruction tephra theme Fildes Peninsula, South Shetland Islands South Shetland Islands 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., Pearson, E., Gabriel, I., Blockley, S., Foster, L.(2023). Reconstructed temperature and tephra deposit age data from Yanou Lake, Fildes Peninsula, South Shetland Islands, northern Antarctic Peninsula. (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/621cf434-1517-4b36-887d-4285315af695 otherRestrictions No restrictions apply url url crossReference url url crossReference textTable eng utf8 geoscientificInformation -58.95985 -58.95985 -62.22072 -62.22072 2007-11-01 2016-11-30 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/plain text/csv application/pdf bytes 7759462 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=621cf434-1517-4b36-887d-4285315af695 WWW:LINK-1.0-http--link Get Data Download data download bytes 7759462 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=621cf434-1517-4b36-887d-4285315af695 WWW:LINK-1.0-http--link Get Data Download data download bytes 7759462 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=621cf434-1517-4b36-887d-4285315af695 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Glycerol dialkyl glycerol tetraether (GDGT) analysis of freshwater-brackish sediments from Yanou Lake dating to c. 6 ka was used to reconstruct mean summer air temperature (MSAT) and MSAT anomaly profiles (relative to the pre-industrial mean 1-0.25 cal. ka BP; RMSE = 2.45 degrees C; Pearson et al., 2011; Foster et al., 2016; Roberts et al., 2017). The published GDGT palaeotemperature reconstructions for Yanou Lake in Roberts et al. (2017) overestimated MSAT for data older than 2000 years due to a lack of data at the upper end of the Foster et al. (2016) Antarctic calibration dataset. Therefore, we constructed a new MSAT anomaly profile by combining GDGT-MSAT data from the global (Pearson et al., 2011) and Antarctic (Foster et al., 2016) GDGT calibration datasets and applied a new regression model based on the same compounds used in both (Juggins pers. comm). This produced a revised mean MSAT anomaly of 0.06 +/- 1.50 degrees C for the last 6,000 years of the Yanou Lake record, which is of a similar magnitude to the James Ross Island ice core mean annual temperature anomaly of 0.01 plus/minus 0.35 degrees C in the same period. Revised modelled ages for tephra deposits in the Yanou Lake record were produced using 2020 calibration curves and Bayesian age-depth modelling in BACON v. 2.5 in R (Blaauw and Christen, 2011). Data quality: RMSE = 2.45±1.44 °C and 1.74±1.44 °C for global calibration temperature reconstructions and Antarctic/revised global+Antarctic calibration temperature reconstructions asNeeded completed