Simulations of the response of the Miocene Antarctic ice sheet to CO2-driven climate variability ...

• Main Authors: Stap, Lennert Bastiaan, Sutter, Johannes, Knorr, Gregor, Stärz, Michael, Lohmann, Gerrit
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Antarc*; Antarctic; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.889802; https://doi.pangaea.de/10.1594/PANGAEA.889802

We present ice thickness and bedrock height from simulations of the Miocene Antarctic ice sheet (AIS), using the 3D thermodynamical Parallel Ice Sheet Model (PISM) version 0.7.3. The applied climate forcing consists of temperature and precipitation anomalies with respect to a preindustrial reference simulation, obtained from simulations using the atmosphere-ocean general circulation model COSMOS. These anomalies are added to an ERA-40/WOD-09 base climate. COSMOS was run using preindustrial settings, and Miocene settings with CO2 levels of 278 ppm (low), 450 ppm (medium), and 600 ppm (high). The steady state simulations using PISM are started with present-day bedrock conditions, with a present-day AIS (Bedmap2), and isostatically rebounded after removal of the ice. Additional simulations are started with the Wilson et al. (2012) late-Eocene bedrock topography reconstruction. The steady state simulations are conducted by applying the same climate forcing over 200 kyr. The transient simulations are performed by ... : The zip folder contains four files: 1. 2019_Stap_PISM_transient.xlsx, 2. 2019_Stap_steadystate_startfrom_Wilson_noice.nc, 3. 2019_Stap_steadystate_startfrom_noice.nc, 4. 2019_Stap_steadystate_startfrom_presentdayAIS.nc4. lonlatfile.nc. ...