diff --git a/notebooks/wp5/greenland_ice_velocity.ipynb b/notebooks/wp5/greenland_ice_velocity.ipynb
index df9e825..ffad46d 100644
--- a/notebooks/wp5/greenland_ice_velocity.ipynb
+++ b/notebooks/wp5/greenland_ice_velocity.ipynb
@@ -25,6 +25,7 @@
    "source": [
     "import matplotlib.colors\n",
     "import matplotlib.pyplot as plt\n",
+    "import xarray as xr\n",
     "from c3s_eqc_automatic_quality_control import download\n",
     "\n",
     "plt.style.use(\"seaborn-v0_8-notebook\")"
@@ -140,22 +141,18 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "ds = download.download_and_transform(\n",
-    "    collection_id,\n",
-    "    request,\n",
-    "    chunks={\"period\": 1},\n",
-    "    transform_func=mask_high_vel_and_compute_std,\n",
-    ")\n",
+    "datasets = []\n",
+    "for period in request[\"period\"]:\n",
+    "    ds = download.download_and_transform(\n",
+    "        collection_id,\n",
+    "        request | {\"period\": period},\n",
+    "    )\n",
+    "    datasets.append(\n",
+    "        ds.squeeze(\"source\", drop=True).expand_dims(period=[period.replace(\"_\", \"-\")])\n",
+    "    )\n",
+    "ds = xr.concat(datasets, \"period\")\n",
     "ds = ds.chunk(y=1351, x=748)\n",
     "\n",
-    "# Rename source dim\n",
-    "periods = []\n",
-    "for source in ds[\"source\"].values.tolist():\n",
-    "    start, stop = source.split(\"_\")[5:7]\n",
-    "    periods.append(f\"{start[:4]}-{stop[:4]}\")\n",
-    "ds[\"source\"] = periods\n",
-    "ds = ds.rename(source=\"period\")\n",
-    "\n",
     "# Add attributes\n",
     "for name, da in ds.data_vars.items():\n",
     "    if name == \"land_ice_surface_measurement_count\":\n",
@@ -344,7 +341,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -358,7 +355,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.13"
+   "version": "3.11.9"
   }
  },
  "nbformat": 4,