Add sample data for sea ice sensitivity

Author: bouweandela

scripts/fetch_test_data.py

@@ -336,6 +336,29 @@ def process_sample_data_request(
         remove_ensembles=True,
         time_span=("1979", "2014"),
     ),
+    # ESMValTool Sea Ice Sensitivity data
+    CMIP6Request(
+        id="esmvaltool-sea-ice-sensitivity",
+        facets=dict(
+            source_id=["ACCESS-ESM1-5", "CanESM5", "HadGEM3-GC31-LL"],
+            frequency=["fx", "mon"],
+            variable_id=["areacella", "areacello", "siconc", "tas"],
+            experiment_id=["historical"],
+        ),
+        remove_ensembles=True,
+        time_span=("1979", "2014"),
+    ),
+    CMIP6Request(
+        id="esmvaltool-sea-ice-sensitivity",
+        facets=dict(
+            source_id=["HadGEM3-GC31-LL"],
+            frequency=["fx"],
+            variable_id=["areacella", "areacello"],
+            experiment_id=["piControl"],
+        ),
+        remove_ensembles=False,
+        time_span=None,
+    ),
     # ILAMB data
     CMIP6Request(
         id="ilamb-data",

src/ref_sample_data/data_request/base.py

@@ -64,8 +64,10 @@ def _deduplicate_datasets(datasets: pd.DataFrame) -> pd.DataFrame:
 
     def _deduplicate_group(group: pd.DataFrame) -> pd.DataFrame:
         first = group.iloc[0].copy()
-        first.time_start = group.time_start.min()
-        first.time_end = group.time_end.max()
+        if hasattr(first, "time_start"):
+            first.time_start = group.time_start.min()
+        if hasattr(first, "time_end"):
+            first.time_end = group.time_end.max()
 
         return first