无法使用 xarray.open_mfdataset() 调用打开多个 .nc 文件！！因为单个文件中没有时间维度文件中只有纬度和经度暗淡

如何解决无法使用 xarray.open_mfdataset() 调用打开多个 .nc 文件！！因为单个文件中没有时间维度文件中只有纬度和经度暗淡

`import xarray as xr`
`import glob`
`path=glob.glob('E:\\PAR\\*.nc')`
`par_data=xr.open_mfdataset(path)`

---

ValueError                              
<ipython-input-6-c56ae2cc2cce> in <module>
      2 import glob
      3 path=glob.glob("E:\\PAR\\*.nc")
----> 4 par=xr.open_mfdataset(path)

~\anaconda3\lib\site-packages\xarray\backends\api.py in open_mfdataset(paths,chunks,concat_dim,compat,preprocess,engine,lock,data_vars,coords,combine,autoclose,parallel,join,attrs_file,**kwargs)
    944             # Redo ordering from coordinates,ignoring how they were ordered
    945             # prevIoUsly
--> 946             combined = combine_by_coords(
    947                 datasets,948                 compat=compat,~\anaconda3\lib\site-packages\xarray\core\combine.py in combine_by_coords(datasets,fill_value,combine_attrs)
    757     concatenated_grouped_by_data_vars = []
    758     for vars,datasets_with_same_vars in grouped_by_vars:
--> 759         combined_ids,concat_dims = _infer_concat_order_from_coords(
    760             list(datasets_with_same_vars)
    761         )

~\anaconda3\lib\site-packages\xarray\core\combine.py in _infer_concat_order_from_coords(datasets)
    104 
    105     if len(datasets) > 1 and not concat_dims:
--> 106         raise ValueError(
    107             "Could not find any dimension coordinates to use to "
    108             "order the datasets for concatenation"

ValueError: Could not find any dimension coordinates to use to order the datasets for concatenation