Greenland climate simulations show high Eemian surface melt which could explain reduced total air content in ice cores

Abstract. This study presents simulations of Greenland surface melt for the Eemian interglacial period (∼130 000 to 115 years ago) derived from regional climate with a coupled energy balance model. Surface is high relevance due its potential effect on ice core observations, e.g., lowering preserved total air content (TAC) used infer past elevation. An investigation particularly interesting warm periods melt, such as period. Furthermore, deepest and most compressed Greenland, resulting in our inability identify layers visually. Therefore, simulating rates associated beneficial improve reconstruction Estimated TAC, based simulated during Eemian, could explain lower TAC observations. The show at all deep locations an average up ∼30 days per year Dye-3, corresponding more than 600 mm water equivalent (w.e.) annual melt. For higher sheet locations, between 60 150 mmw.e.yr-1 are simulated. At summit this yields refreezing ratio 25 % accumulation. As consequence, should be considered when interpreting fluctuations elevation changes. In addition estimating influence cores, potentially coring where best preserved.