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
1138440632,PR_kwDOAMm_X84y2G8-,6276,Allow to parse more backend kwargs to pydap backend,12813228,closed,0,,,5,2022-02-15T09:50:41Z,2022-02-17T12:51:50Z,2022-02-17T12:51:50Z,CONTRIBUTOR,,0,pydata/xarray/pulls/6276,"<!-- Feel free to remove check-list items aren't relevant to your change -->

- [x] Closes #6274
- [x] Tests added
- [x] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
- [x] New functions/methods are listed in `api.rst`
","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/6276/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull
1137148310,I_kwDOAMm_X85Dx4GW,6274,Enable to parse more backend_kwargs when opening via PydapDataStore (e.g. output_grid),12813228,closed,0,,,2,2022-02-14T11:15:15Z,2022-02-17T12:51:49Z,2022-02-17T12:51:49Z,CONTRIBUTOR,,,,"### Is your feature request related to a problem?

I am planning to use xarray to access netcdf data from a thredds server. For my particular application, I need to be able to set pydap client option `output_grid=False`, to avoid some issues that I have experienced with a particular dataset on the server I am downloading from. 

I use `xarray.open_dataset` to access the data via pydap backend, which currently only allows to specify ""session"" as a keyword in `backend_kwargs`. 

https://github.com/pydata/xarray/blob/8c5c230881d616af32c5a42cca261eb11fce3916/xarray/backends/pydap_.py#L89

It would be helpful to be able to provide additional `backend_kwargs` accepted by the pydap client (such as `output_grid`).

https://github.com/pydap/pydap/blob/dbe9b8d15831f21c28b97ed5661b2708faec45f2/src/pydap/client.py#L58



### Describe the solution you'd like

It could be perhaps as simple as extending the signature of [PydapDataStore.open](https://github.com/pydata/xarray/blob/8c5c230881d616af32c5a42cca261eb11fce3916/xarray/backends/pydap_.py#L89) from:

```python
@classmethod
def open(cls, url, session=None):

    ds = pydap.client.open_url(url, session=session)
    return cls(ds)
```

to, e.g.:

```python
@classmethod
def open(cls, url, **kwargs):

    ds = pydap.client.open_url(url, **kwargs)
    return cls(ds)
```

### Describe alternatives you've considered

_No response_

### Additional context

_No response_","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/6274/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed,13221727,issue