B05. Eddy-driven diffusivity using Lagrangian particles in global ocean simulations
| Poster Title | Eddy-driven diffusivity using Lagrangian particles in global ocean simulations |
|---|---|
| First Author | Amrapalli Garanaik (Unlicensed) |
| Topic | ocean/ice model development |
| Affiliation | Los Alamos National Laboratory |
| Link to document |
Title
Eddy-driven diffusivity using Lagrangian particles in global ocean simulations
Authors
Amrapalli Garanaik, Mark R. Petersen and Phillip J. Wolfram
Abstract
The understanding and accurate representation of tracer transport and mixing due to eddies is still an outstanding problem in the field of large-scale ocean dynamics. Lagrangian particles provide a unique and powerful tool to characterize turbulent mixing and dispersion, as well as track the sources, pathways, and sinks of heat and water masses in global ocean models. In this study, the Energy Exascale Earth System Model (E3SM) is used in conjunction with Lagrangian in Situ Global High-Performance Particle Tracking (LIGHT) module for analyzing turbulence statistics in high-resolution ocean models. The focus of the work is to develop a better parameterization of isopycnal diffusivity using LIGHT data and evaluate improved nonlinear closure models that are based on the relationship between mixing lengths and nonlinear eddy parameters.