Release notes 1.0.0rc12

docs/source/release-notes/version_1.0.0rc_updates.rst

@@ -2,6 +2,57 @@ Version 1.0.0 Release Candidate Updates
 ///////////////////////////////////////
 
 
+Version 1.0.0rc12
+==================
+
+Xarray engine changes
+-------------------------
+
+- Four new built-in dimensions were added to the Xarray engine (:pr:`1008`):
+
+    - chem_variable
+    - wavelength
+    - wave_direction
+    - wave_frequency
+
+  See :ref:`xr_dim` and the following examples for more details:
+
+    - :ref:`/how-tos/xr_engine/xarray_engine_chem.ipynb`
+    - :ref:`/how-tos/xr_engine/xarray_engine_wave_spectra.ipynb`
+
+- Represented the ``_earthkit`` attribute as a JSON string instead of a dict  (:pr:`1021`). With this Xarrays generated by earthkit-data can be serialised into NetCDF without removing the ``_earthkit`` attribute.
+
+Other changes
+-------------------------
+
+- Added more keys to the ``parameter`` component of a Field and replaced the existing  ``chem_variable`` key with ``chem`` (:pr:`1008`).  The following keys were added:
+
+    .. code-block:: python
+
+        chem: Optional[str] (replaces chem_variable)
+        chem_long_name : Optional[str]
+        wavelength: Optional[Union[int, float]]
+        wavelength_bounds: Optional[Union[tuple[int, int], tuple[float, float]]]
+        wavelength_units: Optional["Units"]
+        wave_direction: Optional[float]
+        wave_direction_index: Optional[int]
+        wave_direction_bounds: Optional[tuple[float, float]]
+        wave_direction_units: Optional["Units"]
+        wave_frequency: Optional[float]
+        wave_frequency_index: Optional[int]
+        wave_frequency_bounds: Optional[tuple[float, float]]
+        wave_frequency_units: Optional["Units"]
+
+
+
+- Added support for hybrid level coefficients in the ``vertical`` component of Field (:pr:`1016`).  The following keys were added:
+
+   - number_of_levels
+   - coefficients
+   - coefficient_names
+   - parametric
+
+
 Version 1.0.0rc11
 ==================