Ice Shelf Melt Rates Across Slope Angles from Direct Numerical Simulation

Direct Numerical Simulation data quantifies melt rates at the ice-ocean interface for slope angles ranging from 5 to 90 degrees. The Australian Antarctic Data Centre produced this dataset from simulations run on the HPC Raijin between March 2015 and June 2017. It includes both laminar and turbulent flow regimes for domain lengths of 1.8 meters and 20 meters.

Use Cases

• Validate analytical scaling theories for melt rate by comparing simulated 'meltrate' values against 'analytical values' columns for laminar and turbulent regimes.
• Analyze the relationship between the 'slope angle' feature and the resulting dissolution rate to understand topographic control on melting.
• Study the transition between flow regimes by examining melt rate data tagged as 'lam' (laminar) and 'turb' (turbulent) across the slope angle range.
• Incorporate the simulated melt rates for specific angles into larger-scale ice sheet models to improve basal melt projections.

Strengths

• Data covers a comprehensive range of 'slope angle' from 5 to 90 degrees.
• Simulations resolved all turbulence length scales for physically accurate heat transfer measurements.
• Includes both simulated results and corresponding analytical values for direct theory comparison.

Limitations

• The dataset size, row count, and specific column details are unknown.
• Simulations use a constant ambient temperature (2.3°C) and salinity (35 psu), limiting environmental variability.
• Temporal coverage is limited to the simulation period (2015-2017), with no ongoing updates.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC) via NASA Earthdata.

Collection Method

Generated via Direct Numerical Simulation (DNS) on the HPC Raijin at NCI, Canberra.

Time Range

Simulation period: March 2015 to June 2017.

Freshness

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Geography

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