Three new model components are included in the E3SM v1 configuration: Model for Prediction Across Scales (MPAS) Ocean, MPAS Sea Ice, and MPAS Land Ice. Pictured here is global E3SM simulation showing eddy activity.
Credit: M. Petersen, P. Wolfram and T. Ringler
Cat 5 hurricane simulated by the E3SM v0 at 13 km resolution. Precipitable water (gray scale) shows the detailed dynamical structure in the flow. Strong precipitation is overlaid in red. High resolution is necessary to simulate reasonable numbers of tropical cyclones including Cat 4 and 5 storms.
Credit: A. Scott and M. Taylor, SNL.
DOE's E3SM is a state-of-the-science Earth system model development and simulation project to investigate energy-relevant science using code optimized for DOE's advanced computers

E3SM Version V2.0 is Here

Version 2.0 of the Energy Exascale Earth System Model was formally frozen and tagged in the project repository on September 29, 2021. After this date, only maintenance and bug-fix updates will be made to this version. Project support and data from the v2 DECK and historical simulations will follow after the project documents its characteristics in journal articles.

Users of v2 are requested to delay submitting papers that use this new version until the project submits its initial v2 publication, thereby creating a citable reference.



  • E3SM MMF Paper

    E3SM’s MMF article was among AGU’s top 10% most downloaded papers in 2020 >>
  • Image of Dr. Hui Wan, PNNL.

    Wan's Work Highlighted

    Wan's work with atmospheric scientists and mathematicians garnered attention >>
  • Calvin in Livestream

    Kate Calvin participated in a Climate Roundtable hosted by Energy Secretary Jennifer Granholm >>
  • Videos Available

    The Spring All-Hands Meeting videos are available, which include project updates and future plans >>


  • Flow diagram of gradient boosting machine learning method.

    ML Improves Triggers

    A novel deep convection trigger function using XGBoost improves precipitation simulation >>
  • MJO Improved in E3SMv1

    Scientists added a mesoscale heating parameterization to E3SMv1 improving MJO representation >>
  • Hot Tropics

    A new study identifies the tropics as an area of frequent record-breaking hot years  >>
  • Tropical Cyclones in E3SM

    New analysis assesses the realism and biases of tropical cyclones at various resolutions in E3SMv1  >>


  • Illustration of how zppy uses sections of the configuration file and bash/Jinja2 templates to launch various jobs.

    Meet zppy

    This new tool will speed up post-processing of E3SM simulations by automating frequent tasks >>
  • E3SM-Unified 1.5.0

    A new version of E3SM-Unified, including recent analysis packages, has been released >>
  • Lt Rain Impacts Aerosols

    Light rain disproportionately influences aerosol burden (aerosol mass) >>
  • Aerosol Overestimation

    Biomass burning (BB) aerosols in most climate models lead to an overestimate of warming >>


  • L. Ruby Leung

    Leung Wins Medal

    Ruby Leung has won the 2022 American Meteorological Society’s Hydrologic Sciences Medal >>
  • Recent DOE Awards

    DOE's recent announcements include awards to E3SM scientists and E3SM ecosystem projects >>
  • AMS Abstracts Welcome

    Submit an abstract to the AMS Session: Security and Resilience Applications with Global ESMs >>
  • Recent E3SM Publicity

    This update includes extreme heat events, a new CICE video and other outreach by E3SM scientists >>

E3SM t-shirts and accessories, stay tuned for the next time the web store is open.

Major Research Directions

Water Cycle

Research focused on understanding and developing the capability to project changes in water within the Earth's system by more realistic portrayals of hydrologic features >>

BGC and Energy

E3SM is examining how more complete treatments of nutrient cycles, land-use/land-cover, and land disturbances such as fires affect biogeochemical cycles. >>


Next generation model development, high performance algorithms and exploration of parallel optimizations targeting upcoming exascale DOE computer facilities. >>


The project is conducting detailed modeling of the interactions between the ocean and the Antarctic ice sheet, including ocean flows under the ice shelves, to investigate the... >>


E3SM is a fully coupled, state-of-the-science Earth system model (ESM) capable of global high definition configuration (25km atmosphere, 12km river model, variable 18 to 6km ocean model, >>


Released global Coupled model simulation output data from E3SM target experiments, both the low and high definition configurations. >>


Software applications for coupled and component model diagnostic, evaluation and analysis, data transfer, manipulation, regridding and post processing. Model development tools and unit >>


Model and data help and support

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