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The following will be submitted to CMIP6 to register E3SM-2-0 model by submitting an issue in github https://github.com/WCRP-CMIP/CMIP6_CVs/issues/new . 

See the table with all registered model versions and activities (experiment types): https://wcrp-cmip.github.io/CMIP6_CVs/docs/CMIP6_source_id.html

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 There is an issue with the size of the string our description creates. All the info is concatenated and becomes a part of the NetCDF attribute string, that has currently (in CMOR) a limit of 1024 characters. We need to cut 105 characters to fit within the limit, below is the original string and my proposition on shortening it out. I also noticed that we did not have any info on vertical layers so added it to the atmos specifications as a sting: "2 vertical layers w/ top at 60 km". See below for changes - old text in red, shortened in green, or added in teal


Registration GitHub issue: https://github.com/WCRP-CMIP/CMIP6_CVs/issues/1127

Original (current) string:

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ocean:
description = MPAS-Ocean (E3SMv2.0, EC30to60E2r2 unstructured SVTs mesh with 236853 cells and 719506 edges, variable resolution 60 km to 30 km; 60 levels; top grid cell 0-10 m)
nominal_resolution = 50 km  none  


ocnBgchem:
description = none
nominal_resolution = none


seaIce:
description = MPAS-Seaice  (E3SMv2.0, MPAS-Ocean grid; 5 ice categories, 7 ice layers, 5 snow layers)
nominal_resolution = 50 km none