issue_comments: 235443620

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https://github.com/pydata/xarray/issues/919#issuecomment-235443620 https://api.github.com/repos/pydata/xarray/issues/919 235443620 MDEyOklzc3VlQ29tbWVudDIzNTQ0MzYyMA== 1217238 2016-07-27T00:06:31Z 2016-07-27T00:06:31Z MEMBER

The problem appears to be that these datasets are inconsistent: some have an nbnds variables, and some don't. Xarray doesn't know what to do in this situation, so it raises an error. You'll need to add some custom processing logic to make the datasets consistent before you merge them.

In principle, we could handle missing variables by adding NaNs, possibly by adding a flag allow_missing_variables to concat. But this doesn't exist yet.

 
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