Build up of ice sheets
Funding programm: Bundesministerium für Bildung und Forschung
Funding identification number (FZK): 01LP2317A
Cost (Kostenstelle): DM 87011019
Project duration: January 01 2024 - December 31 2026
Applicants: Dr. Gregor Knorr | Prof. Dr. Gerrit Lohmann
PhD student: Pengyang Song
The main goal of this Project is the simulation of the massive ice volume build-up in MIS 4 in transient simulations starting in MIS 5 with the coupled ESMs. First, we will extend the simulations of the Last Glacial Inception performed in PalMod phase II, which end in MIS 5d (110 ka) or MIS 5b (86 ka), and continue those runs into MIS 4 and a little further until 45 ka in order to have an overlapping interval with the transient WP1.2 simulations. Model results will be compared/validated not only against sea level and ice sheet reconstructions, but also against marine and terrestrial climate proxy data in collaboration with CC2 and CC3.
Figure: Simulated surface mass balance in the initial stages of the last glaciation. Centers of mass accumulation are show by blue shades.
References
Barker, S., & Knorr, G. (2023): A systematic role for extreme ocean-atmosphere oscillations in the development of glacial conditions since the Mid Pleistocene Transition. Paleoceanography and Paleoclimatology, 38, e2023PA004690. https://doi.org/10.1029/2023PA004690
Hasenclever, J., Knorr, G., Rüpke, L. H., Köhler, P., Morgan, J., Garofalo, K., Barker, S., Lohmann, G. and I. R. Hall (2017): Sea level fall during glaciation stabilized atmospheric CO2 by enhanced volcanic degassing, Nature Commun., 8, doi: 10.1038/ncomms15867
Niu, L., Lohmann, G., Gierz, P., Gowan, E. J. and Knorr, G. (2021): Coupled climate-ice sheet modeling of MIS-13 reveals a sensitive Cordilleran Ice Sheet. Global and Planetary Change, 200. Art.Nr. 103474. DOI 10.1016/j.gloplacha.2021.103474