Change in xarray default causing large number of warnings

[marc-white]

Description

When trying to open datasets using intake-esm, the following warning keeps being printed:

[/g/data/xp65/public/apps/med_conda/envs/analysis3-25.02/lib/python3.11/site-packages/intake_esm/source.py:82](https://are.nci.org.au/g/data/xp65/public/apps/med_conda/envs/analysis3-25.02/lib/python3.11/site-packages/intake_esm/source.py#line=81): FutureWarning: In a future version of xarray decode_timedelta will default to False rather than None. To silence this warning, set decode_timedelta to True, False, or a 'CFTimedeltaCoder' instance.
  ds = xr.open_dataset(url, **xarray_open_kwargs)

What I Did

A command to to_dask an existing intake_esm datastore (data not publicly available).

Version information: output of intake_esm.show_versions()

INSTALLED VERSIONS
------------------

cftime: 1.6.4
dask: 2025.1.0
fastprogress: 1.0.3
fsspec: 2025.2.0
gcsfs: 2025.2.0
intake: 2.0.8
intake_esm: 2025.2.3
netCDF4: 1.7.2
pandas: 2.2.3
requests: 2.32.3
s3fs: 2025.2.0
xarray: 2025.1.2
zarr: 2.18.4

[marc-white]

Pinging @charles-turner-1 , who mentioned he may already have a fix in mind?