id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
558455147,MDU6SXNzdWU1NTg0NTUxNDc=,3740,Error during slicing of a dataarray,16163706,closed,0,,,1,2020-02-01T01:26:55Z,2022-04-09T15:52:32Z,2022-04-09T15:52:31Z,NONE,,,,"#### MCVE Code Sample
<!-- In order for the maintainers to efficiently understand and prioritize issues, we ask you post a ""Minimal, Complete and Verifiable Example"" (MCVE): http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports -->

```python
# Your code here

```
loaded the dataset using 
ds = xr.open_mfdataset(in_fns, decode_times=False, decode_cf=False, concat_dim='time')
#### Expected Output


#### Problem Description
this my data array (da)
<xarray.DataArray 'QAP' (time: 5184, lev: 30, lat: 64, lon: 128)>
dask.array<concatenate, shape=(5184, 30, 64, 128), dtype=float32, chunksize=(48, 30, 64, 128), chunktype=numpy.ndarray>
Coordinates:
  * lev      (lev) float64 3.643 7.595 14.36 ... 957.5 976.3 992.6
  * lon      (lon) float64 0.0 2.812 5.625 8.438 ... 351.6 354.4 357.2
  * lat      (lat) float64 -87.86 -85.1 -82.31 ... 82.31 85.1 87.86
  * time     (time) float64 365.0 365.0 365.0 ... 707.9 708.0 708.0
Attributes:
    units:      kg/kg
    long_name:  Q after physics

when I am trying to slice it via da[1:]
it throws an error saying 
conflicting sizes for dimension 'time': length 96 on 'this-array' and length 5183 on 'time'

#### Output of ``xr.show_versions()``
version = 0.14.0
<details>
# Paste the output here xr.show_versions() here

</details>
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