Seasonal Antarctic Sea Ice Extent Reconstructions, 1905-2020, Version 1

These data are reconstructed seasonal Antarctic sea ice extent (SIE) for 1905 through 2020. They are provided along with uncertainty estimates and metadata that describe aspects of the reconstruction process that produced the SIE data. Reconstructed SIE ensembles are given for the entire Southern Ocean. The data files are available in comma-separated values format (.csv) and NetCDF-3 format (.nc).