diff --git a/resources/xios_defs/file_def_diags_climate.xml b/resources/xios_defs/file_def_diags_climate.xml
new file mode 100644
index 0000000..108381f
--- /dev/null
+++ b/resources/xios_defs/file_def_diags_climate.xml
@@ -0,0 +1,16 @@
+<file_definition>
+
+  <file id="lfric_averages" name="lfric_averages" output_freq="100d" convention="UGRID" enabled=".TRUE.">
+    <field_group operation="average" freq_op="1ts">
+      <field field_ref="theta" operation="average" />
+      <field field_ref="u_in_w3" operation="average" />
+      <field field_ref="v_in_w3" operation="average" />
+      <field field_ref="w_in_w3" operation="average" />
+      <field field_ref="forcing__dtheta_force" operation="average" />
+      <field field_ref="forcing__du_force" operation="average" />
+      <field field_ref="forcing__dv_force" operation="average" />
+      <field field_ref="exner_in_wth" operation="average" />
+    </field_group>
+  </file>
+
+</file_definition>