add logic to force correct standard_name asignment for lat/lon coords in final variable dataset before writing to netcdf

Author: wrongkindofdoctor

src/preprocessor.py

@@ -1544,6 +1544,12 @@ def write_dataset(self, var: varlist_util.VarlistEntry, ds: xr.Dataset):
                         v_dataset = ds[v].to_dataset()
                         var_ds = xr.merge([var_ds, v_dataset])
 
+        # assign lat/lon coordinate standard_name if not defined or incorrect
+        for v in var_ds.variables:
+            if 'lat' in v.lower() and 'lat' not in var_ds[v].standard_name.lower():
+                var_ds[v]['standard_name'] = var.Y.standard_name
+            elif 'lon' in v.lower() and 'lon' not in var_ds[v].standard_name.lower():
+                var_ds[v]['standard_name'] = var.X.standard_name
 
         # The following block is retained for time comparison with dask delayed write procedure
         # var_ds.to_netcdf(