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Due to past versions of E3SM initializing variables to NaNs, simulations that use older restart files will still be initializing variables, like TWS_MONTH_BEGIN, to NaN which may cause runtime errors (examples of how these errors may appear in e3sm.log.* files are included below).

Solution

• Ensure that the initial fix is in your branch (here: commit with fix ).

• If your simulation uses an initial condition file for land (finidat), replace the NaNs in TWS_MONTH_BEGIN with the fill value of 1.e+36. Below are methods to perform the conversion:

  • Using NCO functions:

    Code Block
    language none
    ncatted -a _FillValue,TWS_MONTH_BEGIN,o,f,NaN ${infile.nc} ncatted -a _FillValue,TWS_MONTH_BEGIN,m,f,1.0e36 ${infile.nc}

  • Using a Python script:

    Code Block
    language py
    from netCDF4 import Dataset import numpy as np ofile = Dataset('infile.nc','r+') var_array = f.variables['TWS_MONTH_BEGIN'] var_array[:][np.isnan(var_array[:])] = 1.e+36 ofile.close()

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