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NERSC Directory Change Notice Due to project's name change at NERSC from 'ACME' to 'E3SM' and NERSC’s file system update, the directory ' |
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E3SM V1
V1 uses topography on a GLL grid with a laplacing smoothing. The smoothing reduces the effective resolution of the topography from 2dx to 6.4dx. (effective resolution is determined by the first wavelength to be damped by 50% from the unsmoothed topography, computed via spherical harmonic spectra)
V1 only needs data on the GLL grid.
Tool chain: Topography generation for GLL grids Requires cube_to_target, homme_tool, and a SCRIP file for the grid.
V1 has poor treatment of topography and compensates in part with increased divergence damping.
E3SM V2
V2 needs topography on the GLL grid, and then a consistent topography on the PG2 grid (created with the same GLL->PG2 algorithm used internally)
V2 uses the same smoothing as V1: 50% damping of the 6.4dx wavelength.
Tool chain: Special Considerations for FV Physics Grids
V2 has improved topography treatment over V1 and will not . V2 configurations do not need to run with increased divergence damping.
E3SM V3
V2 V3 needs topography on the GLL grid, and then a consistent topography on the PG2 grid (created with the same GLL->PG2 algorithm used internally)
V3 has improved pressure gradient and viscosity treatment over V2 and will be using a significantly rougher topography.
This tool chain has not been finalized yet.
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land grid descriptor file in SCRIP format
ESMF_RegridWeightGen
geographic distribution for each land surface type along with grid descriptor files for each of those surface types
mkmapdata.sh (found in components/clm/tools/shared/mkmapdata/)
mksurfdata.pl (found in components/clm/tools/clm4_5/mksurfdata_map/)
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