“…We focused these efforts specifically on the Kangerlussuaq region, rather than the broader southwestern GrIS, for several reasons. First, in ice sheet regions dominated by surface mass balance (Cuzzone et al, 2019;Sole et al, 2008), the rate of ice margin change is related to climate forcing on centennial-to-millennial timescales (Kelley et al, 2015). The retreat history of land-based GrIS sectors, such as the Kangerlussuaq region, can therefore provide insight into climatic conditions over the Holocene.…”