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README.md

@@ -101,6 +101,7 @@ print(f"Range: {catalog['datetime'].min()} to {catalog['datetime'].max()}")
 ```python
 import json
 import fsspec
+import zarr
 import xarray as xr
 import pyarrow.parquet as pq
 
@@ -115,9 +116,10 @@ with fsspec.open(HF_PARQUET, "rb") as f:
             refs = json.loads(row["kerchunk_refs"][0])
             break
 
-# Open via fsspec reference filesystem (reads bytes from S3 on demand)
-mapper = fsspec.filesystem("reference", fo=refs).get_mapper("")
-ds = xr.open_dataset(mapper, engine="zarr", consolidated=False)
+# Open via fsspec reference filesystem → zarr.storage.FsspecStore (Zarr v3 compatible)
+fs = fsspec.filesystem("reference", fo=refs, remote_protocol="s3", remote_options={"anon": True})
+store = zarr.storage.FsspecStore(fs, read_only=True)
+ds = xr.open_dataset(store, engine="zarr", consolidated=False, zarr_format=2)
 print(ds)
 ```