Pushing the Limits of Global Ocean Modelling on the Trillium Supercomputer скачать в хорошем качестве

Pushing the Limits of Global Ocean Modelling on the Trillium Supercomputer

We describe our early experiences using the Trillium supercomputer to develop a next-generation Massachusetts Institute of Technology general circulation model (MITgcm) global ocean simulation. Our project will culminate in a run of the MITgcm with horizontal grid spacing of 1/96° (~1 km). It will be the highest-resolution realistic ocean model produced to date. This simulation will contain several advances relative to the widely used 1/48° MITgcm simulation (also known as LLC4320), including increased vertical and horizontal resolution, an updated global bathymetry, the use of a more accurate surface pressure solver, the addition of ice-shelf cavities around Greenland and Antarctica, hourly atmospheric forcing, realistic river discharge, and more accurate astronomical tides. These improvements directly address long-standing issues in earlier high-resolution MITgcm simulations, for example, a misplaced Gulf Stream, a crude representation of Antarctic shelf currents, and anemic tropical instability waves. The resulting model output will offer an unprecedented benchmark for studies of internal tides and internal waves, turbulence parameterization, and sea-surface height variability. All configurations, tools, and outputs will be openly released, positioning this Canada-led effort as a major global resource for oceanography and climate modelling. ------- This webinar was presented by Kayhan Momeni (U. of Toronto) on January 14, 2026, as part of the Compute Ontario Colloquia series. These colloquia cover different advanced research computing (ARC) and high performance computing (HPC) topics, are 45 to 60 minutes in length, and are delivered by experts in the relevant fields. Further details can be found at https://www.computeontario.ca/trainin... . This webinar was hosted by SciNet.