Remove _add_cf_attrs_to_z_axes

- Bug is fixed in xcdat v0.7.3

auxiliary_tools/cdat_regression_testing/863-z-bounds-fix/run_script.py

@@ -0,0 +1,22 @@
+import os
+from e3sm_diags.parameter.core_parameter import CoreParameter
+from e3sm_diags.run import runner
+
+param = CoreParameter()
+
+# param.reference_data_path = '/global/cfs/cdirs/e3sm/diagnostics/observations/Atm/climatology'
+# param.test_data_path = '/global/cfs/cdirs/e3sm/zhang40/e3sm_diags_for_EAMxx/data/Cess'
+param.reference_data_path = (
+    "/global/cfs/cdirs/e3sm/diagnostics/observations/Atm/climatology"
+)
+param.test_data_path = "/global/cfs/cdirs/e3sm/chengzhu/eamxx/post/data/rgr"
+param.test_name = "eamxx_decadal"
+param.seasons = ["ANN"]
+# param.save_netcdf = True
+
+prefix = "/global/cfs/cdirs/e3sm/www/cdat-migration-fy24"
+param.results_dir = os.path.join(prefix, "889-z-axis-bnds")
+
+runner.sets_to_run = ["zonal_mean_2d"]
+
+runner.run_diags([param])

e3sm_diags/driver/utils/dataset_xr.py

@@ -419,11 +419,6 @@ def _get_climo_dataset(self, season: str) -> xr.Dataset:
         filepath = self._get_climo_filepath(season)
         ds = self._open_climo_dataset(filepath)
 
-        # Add CF attributes to Z axes if they are missing.
-        # NOTE: This is a temporary workaround for xCDAT.
-        # Refer to https://github.com/xCDAT/xcdat/pull/708
-        ds = self._add_cf_attrs_to_z_axes(ds)
-
         if self.var in self.derived_vars_map:
             ds = self._get_dataset_with_derived_climo_var(ds)
         elif self.var in ds.data_vars.keys():
@@ -439,35 +434,6 @@ def _get_climo_dataset(self, season: str) -> xr.Dataset:
 
         return ds
 
-    def _add_cf_attrs_to_z_axes(self, ds: xr.Dataset) -> xr.Dataset:
-        """Add CF attributes to the Z axis of the dataset if the Z axis exists.
-
-        This method is a temporary solution to enable xCDAT to properly
-        retrieve bounds for Z axes that do not have CF attributes, which
-        is required for downstream regridding operations.
-
-        Parameters
-        ----------
-        ds : xr.Dataset
-            The dataset.
-
-        Returns
-        -------
-        xr.Dataset
-            The dataset with CF attributes added to the Z axes.
-        """
-        try:
-            dim = xc.get_dim_keys(ds, axis="Z")
-        except KeyError:
-            pass
-        else:
-            axis_attr = ds[dim].attrs.get("axis")
-
-            if axis_attr is None:
-                ds[dim].attrs["axis"] = "Z"
-
-        return ds
-
     def _open_climo_dataset(self, filepath: str) -> xr.Dataset:
         """Open a climatology dataset.