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🐞 xarray fails with downloading GFS data #16

@jamal919

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@jamal919

Xarray DAP access seems to be failing, for not reproducible reason with an "OSError [Errno -73] NetCDF: Malinformed or inaccessible DAP2 DATADDS or DAP4 DAP response". Running the script multiple times, often fix it, but that is a hit or miss. For example, during writing this issue, I had run the script 5 times to get it work finally!

Previously I have experimented with pydap to download the data, and my experience is it always works, or throws Error that are legible. However, one issue with pydap is I could not find a way to download a subset, rather I had to download the full data and make a subset afterwards. Needs further investigation, and potentially a backup backend function based on pydap to download the data if xarry fails a preselected (say 3) times.

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