Data Description

The E3SM data is freely available through the Earth System Grid Federation (ESGF) distributed archives, which also is an official space to hold CMIP6 (Coupled Model Intercomparison Phase 6) data. E3SM is participating in CMIP6 and already had performed CMIP Diagnostic, Evaluation and Characterization of Klima (DECK) experiments and CMIP6 historical simulations. The work on publishing the data to CMIP6 in the exact data format requested by CMIP6 is underway.


The data is published to Earth System Grid Federation (ESGF) archives. All the data is published in the E3SM output format both in the native grid and some regridded to standard Cartesian grid. The CMIP6 DECK data will also be published to CMIP6 ESGF archives, it will be regridded to the CMIP6 requested grid and it will be CMOR-ized (formatted with Climate Model Output Rewriter, CMIP6 endorsed software ) to met the CMIP6 data format and metadata requirements.


In addition to publishing data in the CMIP6 format, data on native grid and regridded to standard grid are available.


E3SM output format data on ESGF:

  • Atmosphere Model Data
    • Native .h0 (monthly)
    • Regridded .h0
    • Regridded monthly and seasonal climotologies
    • Regridded time series (of select variables)
  • Land Model Data
    • Native clm2.h0
    • Regridded clm2.h0
  • Ocean Model Data (MPAS-O)
    • Native
  • Sea-Ice Model Data (MPAS-SI)
    • Native

ESGF Data Search Options

E3SM ESGF search options

ESGF E3SM home page

Data on ESGF – LLNL ESGF node (image to the right)

Use search options in ESGF to zoom in on the data you are looking for. The image on the right shows what search criteria are possible. You can also use a more detail search and look for a string in the file name for example.

The E3SM v1 data published so far falls into one of the experiments:

  • piControl – for the lower res CMIP6 DECK simulation
  • 1950-control  – for the high resolution HiResMIP-like simulation

So far the data published belongs to the Science Driver:

  • Water Cycle
 You can choose the data belonging to one of the 4 main categories roughly  aligned with model component, they are:
  • atmos – for atmosphere component related data
  • land – for the land and mosart components related data
  • ocean – for ocean component related data
  • sea-ice – for the sea ice component related data

Currently published data has version 1.0 which shown in options as “1 0” .

The data is either in as is on a native grid or is regridded

  • native grid – this is the grid that a component is using in the simulation, it is different for different components
  • regridded to 129×256 lon-lat uniform grid

The data can be in several different time frequencies:

  • 3hr – three hourly
  • 6hr – sic hourly
  • day – daily
  • mon – monthly
  • monClim – monthly climatologies
  • seasonClim  – seasonal climatologies

There are three data types possible

  • climo  – for climatologies
  • model-output  – for raw model output
  • time-series  – time-series of a particular variable for all simulated times

The currently published simulations correspond to the periods:

  • Perpetual 1850 – for the lower res CMIP6 DECK simulation
  • Perpetual 1950 – for the high resolution HiResMIP-like simulation

The atmosphere and land components grids for those simulations are:

  • 0 25deg – for the high resolution HiResMIP-like simulation
  • 1deg – for the lower res CMIP6 DECK simulation


The ocean and sea ice components grids are variable:

  • 18-6km – for the high resolution HiResMIP-like simulation
  • 60-30km – for the lower res CMIP6 DECK simulation

Published Data Statistics

The 1950-Control run with 1 year of data is:

  • Published
    • 1.3T of data
    • 135 files
  • Each month of data:
    • atmosphere data is 15G
    • land data is 1.2G
    • ocean data is 76G
    • sea-ice data is 2.1G

The piControl run with 500 years of data is:

  • Published
    • 34T of data
    • 43742 files
  • Each month of data:
    • atmosphere data is 1.022G
    • land data is 0.88G
    • ocean data is 3.7G
    • sea-ice data is 0.138G
    • Each 500yr time-series is 0.757G
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