Miocene Antarctic Ice Sheet Simulations Under Precipitation and Melt Forcing

Simulation outputs from the IMAU-ICE ice sheet model investigating Antarctic ice sheet variability during the Miocene epoch. The dataset includes equilibrium experiments at various CO2 levels and sensitivity experiments with a fixed 25% precipitation increase and extreme sub-shelf melt rates of 400 m/yr. The work was conducted by Lennert B. Stap of Utrecht University.

Use Cases

• Analyze ice sheet volume-to-area ratio changes based on the described precipitation regime change experiments.
• Study ice sheet sensitivity to CO2 levels based on equilibrium experiments between preindustrial and 3x preindustrial values.
• Model Antarctic ice sheet response to extreme melt forcing based on the 400 m/yr sub-shelf melt rate experiments.
• Validate ice sheet model behavior under transient climate forcing calculated from prescribed CO2 and ice sheet size.

Strengths

• Experiments apply a specific, quantified precipitation increase of 25% of warm snapshot fields.
• Sensitivity tests use an extreme and defined sub-shelf melt rate of 400 meters per year.
• Model experiments are initiated from a defined ice-free Miocene Antarctic topography (Hochmuth et al., 2020).
• Equilibrium experiments cover a range of CO2 levels between preindustrial and 3x preindustrial values.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Utrecht University

Collection Method

Outputs from the 3D thermodynamical ice sheet/shelf model IMAU-ICE v1.1.1, using climate forcing from pre-run snapshot simulations and a matrix interpolation method.

Time Range

Miocene epoch

Geography

Antarctica