PNNL

The Study for Exascale Advances in a High-Resolution Ocean using ROMS Coupled to E3SM (SEAHORCE) project focuses on delivering improved representations of small-scale coastal and open-ocean processes, such as river plumes, coastal fronts, and mesoscale and sub-mesoscale eddy processes. To accomplish this, project collaborators will develop and evaluate a new component for the Energy Exascale Earth System Model (E3SM) based on the Regional Ocean Modeling System (ROMS), a community-standard coastal ocean model in use for more than 20 years.

To achieve the overarching goal to improve the ability of E3SM to model oceans with higher fidelity than currently possible, project efforts will support the following objectives:

1. Extend the resolution capabilities of MPAS-Ocean through coupling with a limited-domain, high-resolution, regional ocean model (ROMS)
2. Create a scientific and technical framework for efficient and robust two-way coupling of ROMS within MPAS-Ocean that exploits the latest high-performance computing architectures
3. Characterize and parameterize the impact of small-scale processes, unresolved in current climate models, on climate projections.

Project Leadership

The SEAHORCE project is funded by the Department of Energy Scientific Discovery through Advanced Computing program and led by Pacific Northwest National Laboratory in collaboration with Lawrence Berkeley National Laboratory, Los Alamos National Laboratory, Argonne National Laboratory, and the University of Washington Applied Physics Laboratory.

Principal Investigator
Rob Hetland, Pacific Northwest National Laboratory

Co-Principal Investigators:
Ann Almgren, Lawrence Berkeley National Laboratory
Darren Engwirda, Los Alamos National Laboratory
Iulian Grindeanu, Argonne National Laboratory
Vijay Mahadevan, Argonne National Laboratory/TechTrans International
Harper Simmons, University of Washington Applied Physics Laboratory