Abstract
The Energy Exascale Earth System Model (E3SM) project was borne of a desire to create a high-resolution climate model which runs well on DOE’s Leadership-Class machines. In this presentation, we will describe some of the characteristics of a multi-decadal simulation comprised of atmosphere and land components using a 25km grid, and ocean and sea ice on a grid that varies from 18km at the equator to 6km near the poles. The latter two components are based on the MPAS (Model for Prediction Across Scales) framework and are represented here for the first time in a fully coupled eddying simulation. The simulation exhibits tropical cyclones with realistic structure and dynamics, ocean eddy energy levels, and current transports. On the other hand, Arctic sea ice appears to be too thin, Arctic winters are too warm, and ocean mixed layers show significant regional biases. We will present preliminary analyses from this run with comparisons to observations and previous simulations.
This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. It is supported by the Energy Exascale Earth System Model (E3SM) project, funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research. IM Release LLNL-ABS- 758598.