evidence: Thus, as with most palaeoceanographic proxies, the δ18O method is best used as a complement to existing multi-proxy efforts based on diatom assemblages, HBIs and opal fluxes for unambiguous assessment of sea-ice conditions. [...] In an effort to evaluate what a future warmer world might look like, researchers have focused on past warmer-than-present intervals. The most studied warmer-than-PI period is the LIG (129–116 ka BP) when global mean annual temperatures were ∼1–2 ∘C above PI and atmospheric CO2 concentration was similar to PI (Burke et al., 2018; Fischer et al., 2018). Reconstructions of LIG sea ice from marine sediment cores are hampered by the scarcity of records south of 60∘ S that contain LIG sediments, well-preserved sea-ice proxies and well-constrained age models. Most existing records are located north of the modern WSI extent and they show an extended period when no sea ice was present at the core sites (Chadwick et al., 2020, 2022a). It is therefore clear that the WSI extent during the LIG was substantially reduced when compared with modern conditions. Aerosol sea-ice proxies in ice cores similarly have been qualitatively interpreted as indicative of a reduced WSI cover during the LIG (Wolff et al., 2006; Spolaor et al., 2013). Due to this reduced LIG sea-ice extent, it has been difficult to accurately reconstruct the position of the WSI edge using marine core evidence alone.