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The purpose of this page is to document the procedure for adding support for new atmosphere grids. The process should be the same for new uniform resolutions as well as for new regionally-refined meshes, although some settings will need to be changed for new regionally-refined mesh configurations. This page is a work in progress, and will be updated as this process is refined and (eventually) made more automated. This documentation is an update of a document written by Mark Taylor and Colin Zarzycki, available as a Google Doc here. Linking to a related page: 

Table of Contents

Table of Contents

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Useful Example Pages:

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File

Tool

Type

Note


ncks, ncremap

NCO


mapping files and mesh template files

TempestRemap

C++

GenerateCSMesh:  make cubed sphere  Exodus (.g) files (spectral element "np" grid)
GenerateVolumetricMesh  create a FV "pg" from a spectral element "np" grid
ConvertExodusToSCRIP convert a FV "pg" Exodus file into a SCRIP file
GenerateOverlapMesh:  used in making mapping files
GenerateOfflineMap:  generate mapping files.  Only tool which can make mapping files directly from SE Exodus files.  

RRM Exodus (.g)  mesh files

SquadGen

C++


topo files

homme_tool

Fortran

Included with E3SM.  Should build and run on any system which can run the HOMME_P24.f19_g16_rx1.A test

Generate (obsolete) SCRIP files for the spectral element "np" dual grid

Used for topo smoothing for both FV "pg" and SE "np" grids. 

Can also do parallel interpolation from SE np4 grid to any SCRIP grid

topo files

cube_to_target

Fortran

NCAR utility for generating unsmoothed topography from high-res USGF data, and generating surface roughness fields from smoothed topography

mapping files

ESMF_Regridweightgen


Make FV->FV mapping files from SCRIP grid template files

Only tool which supports the montone 2nd order "bilin" map


gen_domain_files 

CIME and ELM tools


land surface dataset 

mksurfdata.pl, mksurfdata_map,

Perl and Fortran


ELM initial condition

interpinic

Fortran

4 options:

  1. cold start: (no IC file).  only suitable for testing functionality in other components.

  2. Run long spinup with prescribed atmosphere 

  3. Interpolate from a spunup IC file from a different simulation, via "interpinc" utility

  4. Inline interpolation for land initial condition is available in E3SM code, but this capability might get broken with the new land subgrid structure



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