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/6805#issuecomment-1187922418,https://api.github.com/repos/pydata/xarray/issues/6805,1187922418,IC_kwDOAMm_X85GzkHy,13301940,2022-07-18T17:47:18Z,2022-07-18T17:47:18Z,MEMBER,"@lassiterdc, in your example above, `f_in_ncs` is just a string and you are passing this string to `xr.open_mfdataset()` which i don't think knows what to do with it. ```python f_in_ncs = ""data/"" ``` have you tried retrieving the list of all files under ""data/"" via the `glob` module? ```python import glob f_in_ncs = sorted(glob.glob(""data/*.nc"")) mf_ds = xr.open_mfdataset(f_in_ncs, concat_dim = ""time"", chunks={'outlat':3500, 'outlon':7000, 'time':50}, combine = ""nested"", engine = 'netcdf4') ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1308176241