Enable Lazy Execution for Sentinel-1 GRD Analysis Mode

CHANGES.md

@@ -1,9 +1,16 @@
+## Changes in 0.2.10 (in development)
+
+- Sentinel-1 GRD analysis mode is now fully lazy, enabling seamless execution on 
+  local and distributed Dask clusters.
+
+
 ## Changes in 0.2.9 (from 2026-06-03)
 
 - Added support for Sentinel-1 Level-2 OCN analysis mode.
 - Fixed an issue in Sentinel-1 GRD analysis mode that could produce NaN values along 
   the edges of the bounding box.
 
+
 ## Changes in 0.2.8 (from 2026-05-08)
 
 - Fix package discovery in `pyproject.toml` to ensure only `xarray_eopf` 

docs/guide.md

@@ -110,7 +110,11 @@ Sentinel-1 Level-1 GRD data is provided in radar geometry, defined by the coordi
   `nearest`, `bilinear`.
 - `footprint_scale_factor`: Defines how radar pixels contribute to the output grid.
   Default: `(3.0, 3.0)`, accounting for resolution differences (e.g., ~10 m GRD
-  vs. ~30 m DEM).
+  vs. ~30 m DEM). 
+- `cache_uri`: Temporary path used to store intermediate results from the
+  backward geocoding step in the Sentinel-1 processing workflow. The cache is 
+  automatically removed when the Python process exits. If None, a temporary 
+  directory with a unique UUID-based name is created.
 
 Examples:  
 

integration/test_sen1_analysis.py

@@ -15,7 +15,7 @@
 show_chunking = False
 
 
-class Sentinel2AnalysisTest(TestCase):
+class Sentinel1AnalysisTest(TestCase):
     def test_open_dataset_sen1_grd(self):
         dem_path = Path(__file__).resolve().parent / "test_data" / "dem_small.zarr.zip"
         store = zarr.ZipStore(str(dem_path), mode="r")
@@ -28,9 +28,9 @@ def test_open_dataset_sen1_grd(self):
         dem = dem.dem
 
         url = (
-            "https://objects.eodc.eu/e05ab01a9d56408d82ac32d69a5aae2a:202603-"
-            "s01siwgrh-global/19/products/cpm_v262/S1A_IW_GRDH_1SDV_20260319"
-            "T102725_20260319T102758_063695_0801D3_2EC6.zarr"
+            "https://objects.eodc.eu/e05ab01a9d56408d82ac32d69a5aae2a:202606"
+            "-s01siwgrh-global/23/products/cpm_v270/S1D_IW_GRDH_1SDV_20260623"
+            "T225558_20260623T225623_003369_005EC5_B4C2.zarr"
         )
         with timeit("open " + url) as result:
             # noinspection PyTypeChecker

integration/test_sen1_native.py

@@ -10,19 +10,19 @@
 class Sentinel1NativeTest(TestCase):
     def test_open_datatree_sen1_grd(self):
         path = (
-            "https://objects.eodc.eu/e05ab01a9d56408d82ac32d69a5aae2a:202603-"
-            "s01siwgrh-global/19/products/cpm_v262/S1A_IW_GRDH_1SDV_20260319"
-            "T102725_20260319T102758_063695_0801D3_2EC6.zarr"
+            "https://objects.eodc.eu/e05ab01a9d56408d82ac32d69a5aae2a:202606"
+            "-s01siwgrh-global/23/products/cpm_v270/S1D_IW_GRDH_1SDV_20260623"
+            "T225558_20260623T225623_003369_005EC5_B4C2.zarr"
         )
         # noinspection PyTypeChecker
         dt = xr.open_datatree(path, engine="eopf-zarr", op_mode="native")
         self.assertEqual(25, len(dt.groups))
         self.assertIn(
-            "/S01SIWGRD_20260319T102725_0033_A364_2EC6_0801D3_VH/measurements",
+            "/S01SIWGRD_20260623T225558_0025_D019_B4C2_005EC5_VH/measurements",
             dt.groups,
         )
-        ds = dt.S01SIWGRD_20260319T102725_0033_A364_2EC6_0801D3_VH.measurements
-        self.assertEqual({"azimuth_time": 22290, "ground_range": 25223}, ds.sizes)
+        ds = dt.S01SIWGRD_20260623T225558_0025_D019_B4C2_005EC5_VH.measurements
+        self.assertEqual({"azimuth_time": 16802, "ground_range": 25319}, ds.sizes)
 
     def test_open_datatree_sen1_slc(self):
         path = (