issue_comments: 413279893

python import xarray as xr xr.open_dataset('http://thredds.ucar.edu/thredds/dodsC/grib/NCEP/GFS/Global_0p5deg/TwoD')

```pytb

MissingDimensionsError Traceback (most recent call last) <ipython-input-6-e2a87d803d99> in <module>() ----> 1 xr.open_dataset(gfs_cat.datasets[0].access_urls['OPENDAP'])

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/backends/api.py in open_dataset(filename_or_obj, group, decode_cf, mask_and_scale, decode_times, autoclose, concat_characters, decode_coords, engine, chunks, lock, cache, drop_variables, backend_kwargs) 344 lock = _default_lock(filename_or_obj, engine) 345 with close_on_error(store): --> 346 return maybe_decode_store(store, lock) 347 else: 348 if engine is not None and engine != 'scipy':

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/backends/api.py in maybe_decode_store(store, lock) 256 store, mask_and_scale=mask_and_scale, decode_times=decode_times, 257 concat_characters=concat_characters, decode_coords=decode_coords, --> 258 drop_variables=drop_variables) 259 260 _protect_dataset_variables_inplace(ds, cache)

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/conventions.py in decode_cf(obj, concat_characters, mask_and_scale, decode_times, decode_coords, drop_variables) 428 vars, attrs, concat_characters, mask_and_scale, decode_times, 429 decode_coords, drop_variables=drop_variables) --> 430 ds = Dataset(vars, attrs=attrs) 431 ds = ds.set_coords(coord_names.union(extra_coords).intersection(vars)) 432 ds._file_obj = file_obj

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/core/dataset.py in init(self, data_vars, coords, attrs, compat) 363 coords = {} 364 if data_vars is not None or coords is not None: --> 365 self._set_init_vars_and_dims(data_vars, coords, compat) 366 if attrs is not None: 367 self.attrs = attrs

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/core/dataset.py in _set_init_vars_and_dims(self, data_vars, coords, compat) 381 382 variables, coord_names, dims = merge_data_and_coords( --> 383 data_vars, coords, compat=compat) 384 385 self._variables = variables

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/core/merge.py in merge_data_and_coords(data, coords, compat, join) 363 indexes = dict(extract_indexes(coords)) 364 return merge_core(objs, compat, join, explicit_coords=explicit_coords, --> 365 indexes=indexes) 366 367

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/core/merge.py in merge_core(objs, compat, join, priority_arg, explicit_coords, indexes) 433 coerced = coerce_pandas_values(objs) 434 aligned = deep_align(coerced, join=join, copy=False, indexes=indexes) --> 435 expanded = expand_variable_dicts(aligned) 436 437 coord_names, noncoord_names = determine_coords(coerced)

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/core/merge.py in expand_variable_dicts(list_of_variable_dicts) 209 var_dicts.append(coords) 210 --> 211 var = as_variable(var, name=name) 212 sanitized_vars[name] = var 213

~/miniconda3/envs/py36/lib/python3.6/site-packages/xarray/core/variable.py in as_variable(obj, name) 112 'dimensions %r. xarray disallows such variables because they ' 113 'conflict with the coordinates used to label ' --> 114 'dimensions.' % (name, obj.dims)) 115 obj = obj.to_index_variable() 116

MissingDimensionsError: 'time' has more than 1-dimension and the same name as one of its dimensions ('reftime', 'time'). xarray disallows such variables because they conflict with the coordinates used to label dimensions. ```