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
373742432,MDExOlB1bGxSZXF1ZXN0MjI1NjAwOTU0,2509,Remove .T as shortcut for transpose(),2448579,closed,0,,,12,2018-10-25T01:58:03Z,2019-08-15T15:33:12Z,2018-10-26T02:04:32Z,MEMBER,,0,pydata/xarray/pulls/2509," - [x] Closes #1232
 - [x] Fully documented, including `whats-new.rst` for all changes and `api.rst` for new API (remove if this change should not be visible to users, e.g., if it is an internal clean-up, or if this is part of a larger project that will be documented later)
","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/2509/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull
373955021,MDU6SXNzdWUzNzM5NTUwMjE=,2510,Dataset-wide _FillValue,2448579,closed,0,,,4,2018-10-25T13:44:46Z,2018-10-25T17:39:35Z,2018-10-25T17:37:26Z,MEMBER,,,,"I'm looking at a netCDF file that has the variable
```
	float T_20(time, depth, lat, lon) ;
		T_20:name = ""T"" ;
		T_20:long_name = ""TEMPERATURE (C)"" ;
		T_20:generic_name = ""temp"" ;
		T_20:FORTRAN_format = ""f10.2"" ;
		T_20:units = ""C"" ;
		T_20:epic_code = 20 ;
```

and global attributes
```
// global attributes:
		:platform_code = ""8n90e"" ;
		:site_code = ""8n90e"" ;
		:wmo_platform_code = 23007 ;
		:array = ""RAMA"" ;
		:Request_for_acknowledgement = ""If you use these data in publications or presentations, please acknowledge the GTMBA Project Office of NOAA/PMEL. Also, we would appreciate receiving a preprint and/or reprint of publications utilizing the data for inclusion in our bibliography. Relevant publications should be sent to: GTMBA Project Office, NOAA/Pacific Marine Environmental Laboratory, 7600 Sand Point Way NE, Seattle, WA 98115"" ;
		:Data_Source = ""Global Tropical Moored Buoy Array Project Office/NOAA/PMEL"" ;
		:File_info = ""Contact: Dai.C.McClurg@noaa.gov"" ;
		:missing_value = 1.e+35f ;
		:_FillValue = 1.e+35f ;
		:CREATION_DATE = ""13:05 28-JUL-2017"" ;
		:_Format = ""classic"" ;

```

#### Problem description

In this case the `_FillValue` and `missing_value` attributes are set for the entire dataset and not each individual variable. `decode_cf_variable` thus fails to insert NaNs.

I'm not sure that this is standards-compliant but is this something we could support?","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/2510/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed,13221727,issue