Stap, Lennert Bastiaan; Knorr, Gregor; Barker, Stephen; Zhang, Xu; Lohmann, Gerrit; Gong, Xun; Gierz, Paul; Stepanek, Christian (2021): Basal melt rates in equilibrium simulations of the Antarctic ice sheet under pre-industrial, 40 ka, and Last Glacial Maximum ocean conditions using the Parallel Ice Sheet Model (PISM 1.1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.927126
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Abstract:
We present basal melt rates for the ice shelves in equilibrium simulations of the Antarctic ice sheet (AIS), using the 3D thermodynamical Parallel Ice Sheet Model (PISM) version 1.1 with PICO as ocean component.
The applied climate forcing consists of yearly mean present-day temperature and precipitation fields from RACMO2.3 (RACMO2 ANT27), and 400-800 m depth average ocean temperature and salinity, obtained from simulations using the atmosphere-ocean general circulation model COSMOS (ocean model MPIOM). COSMOS was run using pre-industrial settings (PID; 278 ppm CO2), settings from 40 kyr ago (40ka; 195 ppm CO2), and Last Glacial Maximum settings (LGM; 185 ppm CO2).
All simulations are started with present-day bedrock conditions, and a present-day AIS size (Bedmap2). The steady state simulations are conducted by applying the same climate forcing over 200 kyr, after a thermodynamical spin-up (no mass changes) of 200,100 yr.
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Related to:
Knorr, Gregor; Barker, Stephen; Zhang, Xu; Lohmann, Gerrit; Gong, Xun; Gierz, Paul; Stepanek, Christian; Stap, Lennert Bastiaan (2021): A salty deep ocean as a prerequisite for glacial termination. Nature Geoscience, 14(12), 930-936, https://doi.org/10.1038/s41561-021-00857-3
Coverage:
Latitude: -90.000000 * Longitude: 0.000000
Comment:
ID: reference pre-industrial simulation
40ka: 40ka simulation with applied sea level change of -64 meter
40ka_no_delta_sealevel: 40ka simulation without sea level change
LGM: LGM simulation with applied sea level change of -123 meter
LGM_no_delta_sealevel: LGM simulation without sea level change
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
164.5 kBytes