Session: Warm Climates (Mid-Holocene, Last interglacial, Deep-time, Pliocene)
Author: Joy Singarayer / firstname.lastname@example.org / University of Reading
Co-author: Paul Valdes, University of Bristol;
Emma Stone, University of Bristol;
Judy Allen, University of Durham;
Brian Huntley, University of Durham;
Previous simulations (e.g. PMIP3) of the early Last Interglacial (LIG) were unable to reproduce the asynchrony in temperature response between northern and southern hemisphere suggested by ocean core reconstructions (Capron et al. 2014) when solely forced with known orbital and greenhouse gas forcings. More recent sensitivity experiments with realistic freshwater forcing representing melting of northern hemisphere ice sheets (Stone et al., 2016) provided a possible mechanism to account for a colder than present North Atlantic and warmer than present Southern Ocean. Such simulations have been primarily compared to available high latitude ice core and ocean data, partly due to sparsity of terrestrial palaeodata. Here, we expand these early LIG sensitivity simulations to consider orbital, greenhouse gas, freshwater hosing, modified ice sheets, and vegetation in their impact over Europe, and compare climate changes to terrestrial palaeodata including pollen-based climatic variables.