diff --git a/changelog/38.feat.md b/changelog/38.feat.md
new file mode 100644
index 00000000..16da6c41
--- /dev/null
+++ b/changelog/38.feat.md
@@ -0,0 +1 @@
+ILAMB snc and IOMB thetao,volcello
diff --git a/pyproject.toml b/pyproject.toml
index a74c3f13..9269da08 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,9 +3,7 @@ name = "ref-sample-data"
 version = "0.6.1"
 description = "CMIP Rapid Evaluation Framework Sample Data"
 readme = "README.md"
-authors = [
-  { name= "Jared Lewis", email="jared.lewis@climate-resource.com" }
-]
+authors = [{ name = "Jared Lewis", email = "jared.lewis@climate-resource.com" }]
 requires-python = ">=3.10"
 
 [project.license]
@@ -18,7 +16,7 @@ platforms = ["osx-arm64", "linux-64", "win-64"]
 [tool.pixi.dependencies]
 python = ">=3.10"
 pooch = ">=1.8.2,<2"
-intake-esgf = ">=2025.5.9,<2026"
+intake-esgf = ">=2025.5.23,<2026"
 matplotlib = ">=3.10.3,<4"
 scipy = ">=1.15.2,<2"
 xarray = ">=2025.1.0,<2025.2"
@@ -64,18 +62,15 @@ exclude_also = [
     # Don't complain about missing type checking code:
     "if TYPE_CHECKING",
     # Exclude ... literals
-    "\\.\\.\\."
+    "\\.\\.\\.",
 ]
 
 [tool.jupytext]
 formats = "ipynb,py:percent"
 
 [tool.pytest.ini_options]
-addopts = [
-    "--import-mode=importlib",
-]
-filterwarnings = [
-]
+addopts = ["--import-mode=importlib"]
+filterwarnings = []
 
 # We currently check for GPL licensed code, but this restriction may be removed
 [tool.liccheck]
diff --git a/scripts/fetch_test_data.py b/scripts/fetch_test_data.py
index 6a438d98..43e64090 100755
--- a/scripts/fetch_test_data.py
+++ b/scripts/fetch_test_data.py
@@ -234,7 +234,7 @@ def process_sample_data_request(
         facets=dict(
             source_id="ACCESS-ESM1-5",
             frequency=["fx", "mon"],
-            variable_id=["areacella", "sftlf", "gpp", "pr", "tas", "mrro", "mrsos", "cSoil", "lai"],
+            variable_id=["areacella", "sftlf", "gpp", "pr", "tas", "mrro", "mrsos", "cSoil", "lai", "snc"],
             experiment_id=["historical"],
         ),
         remove_ensembles=True,
@@ -256,7 +256,18 @@ def process_sample_data_request(
         facets=dict(
             source_id="ACCESS-ESM1-5",
             frequency=["fx", "mon"],
-            variable_id=["areacello", "sftof", "tos", "sos", "msftmz"],
+            variable_id=["areacello", "sftof", "tos", "sos", "msftmz", "thetao"],
+            experiment_id=["historical"],
+        ),
+        remove_ensembles=True,
+        time_span=("2000", "2025"),
+    ),
+    # Sometimes models have time-dependent volcello
+    CMIP6Request(
+        facets=dict(
+            source_id="ACCESS-ESM1-5",
+            table_id="Ofx",
+            variable_id=["volcello"],
             experiment_id=["historical"],
         ),
         remove_ensembles=True,
diff --git a/src/ref_sample_data/data_request/base.py b/src/ref_sample_data/data_request/base.py
index 17e49b26..c20de7ad 100644
--- a/src/ref_sample_data/data_request/base.py
+++ b/src/ref_sample_data/data_request/base.py
@@ -80,7 +80,11 @@ def fetch_datasets(self) -> pd.DataFrame:
         """Fetch the datasets from the ESGF."""
         cat = ESGFCatalog()
 
-        cat.search(**self.facets)
+        opts = {}
+        if self.time_span:
+            opts["file_start"] = self.time_span[0]
+            opts["file_end"] = self.time_span[1]
+        cat.search(**(opts | self.facets))
         if self.remove_ensembles:
             cat.remove_ensembles()