diff --git a/pyproject.toml b/pyproject.toml
index 3b92193..7a59460 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,9 @@ dev = [
     "pre-commit>=4.0.0",
     "ipython>=9.11.0",
     "pytest>=9.0.2",
+    "pooch>=1.9.0",
 ]
 test = [
     "mxalign",
+    "pooch",
 ]
diff --git a/src/mlwp_data_loaders/loaders/harp/obstable.py b/src/mlwp_data_loaders/loaders/harp/obstable.py
index fe54367..fc1cd76 100644
--- a/src/mlwp_data_loaders/loaders/harp/obstable.py
+++ b/src/mlwp_data_loaders/loaders/harp/obstable.py
@@ -92,6 +92,14 @@ def load_dataset(
         altitude=("code", alt_values),
     )
 
+    ds.coords["valid_time"].attrs["standard_name"] = "time"
+    ds.coords["latitude"].attrs.update(
+        {"standard_name": "latitude", "units": "degrees_north"}
+    )
+    ds.coords["longitude"].attrs.update(
+        {"standard_name": "longitude", "units": "degrees_east"}
+    )
+
     return ds.rename_dims({"code": "point_index"}).transpose(
         "valid_time", "point_index"
     )
diff --git a/tests/test_harp_obstable_integration.py b/tests/test_harp_obstable_integration.py
new file mode 100644
index 0000000..43d6616
--- /dev/null
+++ b/tests/test_harp_obstable_integration.py
@@ -0,0 +1,54 @@
+"""Integration tests for the built-in ``harp.obstable`` loader."""
+
+from __future__ import annotations
+
+import pooch
+import pytest
+from mlwp_data_specs import validate_dataset
+
+from mlwp_data_loaders.api import load_dataset
+from mlwp_data_loaders.core import get_dataset_traits_from_loader
+from mlwp_data_loaders.mxalign_api import validate_dataset_with_mxalign
+
+HARP_DATA_URL = "https://raw.githubusercontent.com/harphub/harpData/master/inst/OBSTABLE/OBSTABLE_2019.sqlite"
+HARP_DATA_HASH = "bdab991c287a41871488456d1a9d697942aa3a612800a88264defa312a9d637b"
+LOADER = "mlwp_data_loaders.loaders.harp.obstable"
+
+
+@pytest.fixture(scope="module")
+def obstable_path() -> str:
+    """Download and cache the test SQLite dataset."""
+    return pooch.retrieve(
+        url=HARP_DATA_URL,
+        known_hash=HARP_DATA_HASH,
+    )
+
+
+def test_load_dataset_opens_harp_obstable(obstable_path: str) -> None:
+    """The harp.obstable loader can open and validate the sample SQLite file."""
+    ds = load_dataset(
+        obstable_path,
+        loader=LOADER,
+    )
+
+    traits = get_dataset_traits_from_loader(LOADER)
+
+    report_mxalign = validate_dataset_with_mxalign(
+        ds,
+        time=traits.get("time_profile"),
+        space=traits.get("space_profile"),
+        uncertainty=traits.get("uncertainty_profile"),
+    )
+    if report_mxalign.has_fails():
+        report_mxalign.console_print()
+    assert not report_mxalign.has_fails()
+
+    report_specs = validate_dataset(
+        ds,
+        time=traits.get("time_profile"),
+        space=traits.get("space_profile"),
+        uncertainty=traits.get("uncertainty_profile"),
+    )
+    if report_specs.has_fails():
+        report_specs.console_print()
+    assert not report_specs.has_fails()
diff --git a/uv.lock b/uv.lock
index 9e19733..addea55 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1435,11 +1435,13 @@ test = [
 [package.dev-dependencies]
 dev = [
     { name = "ipython" },
+    { name = "pooch" },
     { name = "pre-commit" },
     { name = "pytest" },
 ]
 test = [
     { name = "mxalign" },
+    { name = "pooch" },
 ]
 
 [package.metadata]
@@ -1459,10 +1461,14 @@ provides-extras = ["test"]
 [package.metadata.requires-dev]
 dev = [
     { name = "ipython", specifier = ">=9.11.0" },
+    { name = "pooch", specifier = ">=1.9.0" },
     { name = "pre-commit", specifier = ">=4.0.0" },
     { name = "pytest", specifier = ">=9.0.2" },
 ]
-test = [{ name = "mxalign", git = "https://github.com/mlwp-tools/mxalign?rev=e2232d93275c7508897a7ddb0cce8b508665f24c" }]
+test = [
+    { name = "mxalign", git = "https://github.com/mlwp-tools/mxalign?rev=e2232d93275c7508897a7ddb0cce8b508665f24c" },
+    { name = "pooch" },
+]
 
 [[package]]
 name = "mlwp-data-specs"
@@ -1994,6 +2000,20 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/54/20/4d324d65cc6d9205fabedc306948156824eb9f0ee1633355a8f7ec5c66bf/pluggy-1.6.0-py3-none-any.whl", hash = "sha256:e920276dd6813095e9377c0bc5566d94c932c33b27a3e3945d8389c374dd4746", size = 20538, upload-time = "2025-05-15T12:30:06.134Z" },
 ]
 
+[[package]]
+name = "pooch"
+version = "1.9.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "packaging" },
+    { name = "platformdirs" },
+    { name = "requests" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/83/43/85ef45e8b36c6a48546af7b266592dc32d7f67837a6514d111bced6d7d75/pooch-1.9.0.tar.gz", hash = "sha256:de46729579b9857ffd3e741987a2f6d5e0e03219892c167c6578c0091fb511ed", size = 61788, upload-time = "2026-01-30T19:15:09.649Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/2a/2d/d4bf65e47cea8ff2c794a600c4fd1273a7902f268757c531e0ee9f18aa58/pooch-1.9.0-py3-none-any.whl", hash = "sha256:f265597baa9f760d25ceb29d0beb8186c243d6607b0f60b83ecf14078dbc703b", size = 67175, upload-time = "2026-01-30T19:15:08.36Z" },
+]
+
 [[package]]
 name = "pre-commit"
 version = "4.5.1"