Presenter: James Benedict, Los Alamos National Laboratory
Title: Overview of MPAS-SI-MPM
Abstract:
The purpose of MPAS-SI-MPM is to enhance the representation of sea-ice mechanics in E3SM using an elastic-decohesive constitutive model with the goal of ultimately improving coupled climate simulations and predictions. The more descriptive physics provides a mechanism to model leads explicitly, and to account for frazil ice and dense water formation in leads, for example. The improved representation will generate more realistic coupling fluxes to the atmosphere and ocean.
The model will be implemented using the material-point method (MPM). MPM provides a Lagrangian representation of sea ice which allows transport of state variables and tracers without numerical diffusion, as well as history along trajectories for constitutive models. GPU acceleration will be achieved in the sea-ice component of E3SM through modifications to the PUMIPic library from FASTMath.
Techniques for parameter calibration and model validation (especially for leads) will be developed. These techniques depend on new metrics for analyzing
spatiotemporal data with discontinuities, and/or lower dimensional features.
Date
Time
- PT: 8:30 am
- ET: 11:30 am
Call Info
- web session: https://global.gotomeeting.com/join/570361173
- call number: (571) 317-3122 Access Code: 570-361-173, If busy, use alternate number: (773) 945-1029
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Attendees
- Mark Petersen
- Wuyin Lin
- Chris Golaz
- Jon Wolfe
- Ruby Leung
- Qi Tang
- Darin Comeau
- Michael J Prather
- Jim Benedict
Time | Title | Presenter | Presentation | Recording | Notes |
|---|---|---|---|---|---|
30 min | Improving the QBO through surrogate-accelerated parameter optimization and vertical grid modification | James Benedict |