Community Talk: Himadri Saini (UNSW)
Role of distinct glacial boundary conditions in simulating a glacial climate state
Abstract
Earth’s climate history has oscillated through several glacial and interglacial cycles. Among these, the Marine Isotope Stage 3 (MIS 3), spanning from 65,000 to 27,000 years ago, exhibited distinct millennial-scale variability. This study presents the simulation of the glacial climate at around 49,000 years ago (49ka), within MIS 3, using the Australian Earth System Model (ACCESS-ESM1.5). In a first step, only orbital parameters and greenhouse gases consistent with 49ka conditions were modified. In a second step, the continental ice-sheet topography and extent as well as associated changes in vegetation and land-sea mask were included. Here we will present the impact of the combined 49ka boundary conditions on climate as well as the separate impacts of orbital parameters plus greenhouse gases, and continental ice-sheets.
Please use this thread for further discussion on this talk.