PP11B-1359:
A Transient Simulation of the Last 800 Thousand Years
Monday, 15 December 2014
Tobias Friedrich1, Axel Timmermann1, Andrey Ganopolski2 and Oliver Elison Timm3, (1)IPRC-SOEST, Honolulu, HI, United States, (2)Potsdam Institute for Climate Impact Research, Potsdam, Germany, (3)State University of New York, Department of Atmospheric and Environmental Sciences, Albany, NY, United States
Abstract:
Using the earth system model of intermediate complexity LOVECLIM with time-varying greenhouse gas concentrations, orbitally-induced insolation changes and a model-based reconstruction of Northern Hemisphere ice volume, a transient simulation of the last 784 thousand years is conducted. The modeling results are compared to numerous marine and terrestrial paleo-datasets and exhibit good agreement for many records. Furthermore it is shown how simulated orbital-scale variations in Southern Hemispheric wind stress and sea-ice extent drive changes in Southern Ocean upwelling and meridional overturning and thus in global ocean ventilation. The simulation results are being made available for the paleo-community and provide a unique opportunity to help understand and interpret the temporal evolution of paleo-records.
