issue_comments: 1439056693

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https://github.com/pydata/xarray/issues/7542#issuecomment-1439056693 https://api.github.com/repos/pydata/xarray/issues/7542 1439056693 IC_kwDOAMm_X85VxkM1 5797727 2023-02-21T20:33:29Z 2023-02-21T20:33:29Z NONE

It might be related to the issue, but the code below is for a different GES DISC dataset from a different server goldsmr5 and the code also break for parallel=True. The same code works well for parallel=False.

```python import xarray as xr import pandas as pd

list daily timestamps from a starting date to an end date

dts = pd.date_range(start = "2013-01-01", end = "2022-12-01", freq = "D")

base url for the files

base = "https://goldsmr5.gesdisc.eosdis.nasa.gov/opendap/MERRA2/M2I3NPASM.5.12.4/"

prefix of the files

prefix = "MERRA2_400.inst3_3d_asm_Np"

function to construct the url of the files

url = lambda d: f"{base}{d.year}/{d.month:02d}/{prefix}.{d.year}{d.month:02d}{d.day:02d}.nc4"

list of urls for the files

fnames = [url(dti) for dti in dts]

lets try to load the first 5 files

ds = xr.open_mfdataset(fnames[:5], parallel=True) ```

The error:

python OSError: [Errno -51] NetCDF: Unknown file format: b'https://goldsmr5.gesdisc.eosdis.nasa.gov/opendap/MERRA2/M2I3NPASM.5.12.4/2013/01/MERRA2_400.inst3_3d_asm_Np.20130105.nc4'

 
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