html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/3279#issuecomment-689508449,https://api.github.com/repos/pydata/xarray/issues/3279,689508449,MDEyOklzc3VlQ29tbWVudDY4OTUwODQ0OQ==,5637662,2020-09-09T11:46:09Z,2020-09-09T11:46:09Z,CONTRIBUTOR,"Very useful :+1: 
I would add:
```
    try:
        c.attrs[""units""] = a.attrs[""units""] + '*' + b.attrs[""units""]
    except KeyError:
        pass
```
to preserve units - but I am not sure that is in scope for xarray.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,489034521