E3SM Model Description
Figure 1. Components of the E3SM Model.
E3SM model consists of several model components, that can be run in stand-alone mode or in a coupled system with Coupler communicating between the models, as shown in Fig 1.
E3SM v3 Components
- cpl7 – Coupler
- EAM: E3SM Atmosphere Model
- ELM: E3SM Land Model
- MOSART – Model for Scale Adaptive River Transport
- MPAS-SI: Model for Prediction Across Scales (MPAS) – Sea Ice
- MPAS-O: MPAS – Ocean
- GCAM: Global Change Assessment Model – Human Earth System
- MALI: MPAS-Albany Land Ice Model.
- WAVEWATCH III® – Wave model
Expected Changes in E3SM v4
- EAM -> EAMxx (SCREAM) – C++/Kokkos code for E3SM Atmosphere Model
- MPAS -> OMEGA – C++/Kokkos code for Ocean Model for E3SM Global Applications
Modeling Across Scales
E3SM model can be configured to support several horizontal resolutions.
E3SM model supports configurations with several resolutions to support modeling across scales.
E3SM Centralized Documentation
The E3SM Project centralized documentation can be found at
An example of a Category 5 hurricane simulated by the E3SM at 13 km resolution.E3SM
E3SM Model Versions
Starting with a version of the Community Earth System Model (CESM1) that we labeled E3SM v0, the team developed the E3SM v1 (in 2018) and E3SM v2 (in 2021) model to execute the simulation campaign designed to answer our v1 and v2 science questions.
Details on different model versions and planned development can be found in
