Alicja B.

This comment is invalid due to wrong url: ~~I see different errors:~~ ~~All three approaches result in the same error message (using zarr, xarray and xcube) with anonymous access:~~ ~~`ClientConnectorError:...

When opening BIOMASS with newest xcube, it works fine with `open_dataset`: `from xcube.core.dsio import open_dataset, open_cube` `ds = open_dataset("https://cci-ke-o.s3-ext.jc.rl.ac.uk:8443/esacci/ESACCI-SOILMOISTURE-L3S-SSMV-COMBINED-1978-2020-fv05.3.zarr", s3_kwargs=dict(anon=True))`  When opening it with `open_cube` an error occurs: 

@santilland The datasets are now available: https://api.earthsystemdatalab.net/api/ogc/collections/datacubes/items/smos-sm https://api.earthsystemdatalab.net/api/ogc/collections/datacubes/items/smos-os