Metadata details

AAS_4537_Law_Dome_2k_SST_Reconstruction

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Citation
Jong, L.M., Roberts, J.L., Moy, A. and Curran, M. (2026) A 2000 year reconstruction of sea surface temperatures and AMOC index using ice cores from Law Dome, East Antarctica, Ver. 1, Australian Antarctic Data Centre - doi:10.26179/rntw-f239, (Unreleased data)
Title
A 2000 year reconstruction of sea surface temperatures and AMOC index using ice cores from Law Dome, East Antarctica
Data Centre
Australian Antarctic Data Centre, Australia
DOI
doi:10.26179/rntw-f239
Created Date
2025-11-10
Revision Date
2025-11-11
Parent record
DSS_2k_data_compilation

Datasets and documents

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    Description

    This dataset contains a 2000 year sea surface reconstruction and Atlantic Meridional Overturning Circulation (AMOC) index reconstruction based on proxy records from the Law Dome ice core record (see https://data.aad.gov.au/metadata/DSS_2k_data_compilation).

    The calibration target for the sea surface reconstruction is the ERSSTv5 reanalysis sea surface temperature anomaly for the period 1854-2015CE, with the anomalies calculated relative to the 1971-2000 climatology. The monthly SSTA data were averaged over the calendar year (January- December) to give an annual value used in the reconstruction. For reconstructing the AMOC, the HadISST reanalysis was used.

    The sea surface temperature reconstruction for each two degree of longitude and latitude cell has been calculated using a multi-variate linear regression including sea salt and snow accumulation records from the Law Dome ice core. The 95% confidence interval was constructed using a circular bootstrapping method. The SST dataset comprises the reconstructed SSTA value, and upper and lower confidence interval values over the last 2000 years for each two degree by two degree cell. The AMOC reconstruction dataset consists of the calculated AMOC index with a 2-year and 50-year Gaussian smooth applied over the 2000 years

    More information on the reconstructions can be found in the accompanying publication: L.M. Jong, J. L. Roberts, A. D. Moy, M. A. J. Curran,: Reconstructing 2000 years of sea surface temperatures from an East Antarctic ice core: A volcanic end to the Medieval Climate Anomaly Law Dome, East Antarctica [submitted], Geophysical Research Letters

    The two files in this dataset are:
    sst_reconstruction_2000years.nc
    AMOC_reconstruction_2000years.csv

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    Access

    These data are not yet publicly available for download.

    Temporal Coverages

    Spatial Coverages

    Latitude

    Northernmost:
    -66.7697
    Southernmost:
    -66.7739

    Longitude

    Westernmost:
    112.8069
    Easternmost:
    112.8116

    Data Resolution

    Latitude Resolution:
    2 Degree(s)
    Longitude Resolution:
    2 Degree(s)
    Temporal Resolution:
    365 Day(s)

    Science Keywords

    Additional Keywords

    • ICE CORES
    • LAW DOME, EAST ANTARCTICA
    • AMOC

    Locations

    • GEOGRAPHIC REGION > POLAR
    • CONTINENT > ANTARCTICA > LAW DOME

    Platforms

    • NOT APPLICABLE

    Instruments

    • Computer

    Researchers

    • jong, lenneke (INVESTIGATOR,TECHNICAL CONTACT,DIF AUTHOR)
    • roberts, jason (INVESTIGATOR,TECHNICAL CONTACT)
    • moy, andrew (INVESTIGATOR)
    • curran, mark (INVESTIGATOR)

    Use Constraints

    This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

    Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4537_Law_Dome_2k_SST_Reconstruction when using these data.

    Creative Commons License