issues with `IDL-FCUL.WRF451Q`

[larsbuntemeyer]

See, e.g.,

• /mnt/CORDEX_CMIP6_tmp/sim_data/CORDEX-CMIP6/DD/EUR-12/IDL-FCUL/ERA5/evaluation/r1i1p1f1/WRF451Q/v1/fx/orog/v20240630/orog_EUR-12_ERA5_evaluation_r1i1p1f1_IDL-FCUL_WRF451Q_v1-r1_fx.nc

There are different attribute values in the filepath than from the filename for the version_realization (v1 vs v1-r1).

[larsbuntemeyer]

pinging @ritamcardoso

[larsbuntemeyer]

Also a quick heads up here from the compliance checker log:

--------------------------------------------------------------------------------
                         IOOS Compliance Checker Report                         
                          Version 5.3.1.dev16+gd68f73e                          
                     Report generated 2025-06-03T16:11:10Z                      
                                    cf:1.11                                     
http://cfconventions.org/Data/cf-conventions/cf-conventions-1.11/cf-conventions.html
--------------------------------------------------------------------------------
                               Corrective Actions                               
orog_EUR-12_ERA5_evaluation_r1i1p1f1_IDL-FCUL_WRF451Q_v1-r1_fx.nc has 5 potential issues


                                     Errors                                     
--------------------------------------------------------------------------------
§5 Coordinate Systems
* orog's auxiliary coordinate specified by the coordinates attribute, height, is not a variable in this dataset

§5.6 Horizontal Coordinate Reference Systems, Grid Mappings, Projections
* grid mapping variable rotated_pole must exist in this dataset

§7.3 Cell Methods
* "fx" is not a valid format for cell_methods attribute of "orog"


                                    Warnings                                    
--------------------------------------------------------------------------------
§2.3 Naming Conventions
* global attribute west-east_grid_dimension should begin with a letter and be composed of letters, digits, and underscores
* global attribute south-north_grid_dimension should begin with a letter and be composed of letters, digits, and underscores
* global attribute bottom-top_grid_dimension should begin with a letter and be composed of letters, digits, and underscores

§2.6 Attributes
* §2.6.2 global attribute title should exist and be a non-empty string
* §2.6.2 global attribute history should exist and be a non-empty string
* §2.6.1 Conventions global attribute does not contain "CF-1.11"

There is an inconsistency between the grid mapping variable name (crs) and the grid mapping attribute value orog:grid_mapping = "rotated_pole" (There is no rotated_pole variable but rather it should be orog:grid_mapping = "rotated_pole").

[ritamcardoso]

corrected and uploaded the new files

[larsbuntemeyer]

Thanks @ritamcardoso for taking this up! There seem to be many other datasets with the same grid mapping issue including the recently uploaded datasets, this is an arbitrary example file:

/mnt/CORDEX_CMIP6_tmp/sim_data/CORDEX-CMIP6/DD/EUR-12/IDL-FCUL/ERA5/evaluation/r1i1p1f1/WRF451Q/v1-r1/6hr/va700/v20240630/va700_EUR-12_ERA5_evaluation_r1i1p1f1_IDL-FCUL_WRF451Q_v1-r1_6hr_1980010100-1980123123.nc

This file also has the variables grid mapping attribute referring to rotated_latitude_longitude although it should be crs. See also: https://github.com/euro-cordex/jsc-compliance-check/issues?q=IDL-FCUL

UPDATE:
Please also note that

• the attribute institute_id is now called institution_id
• variables on pressure levels require a scalar coordinate the defines the pressure coordinate.

There is also another common issue in the datasets of WRF451Q in which the rotated pole coordinates have wrong attributes for the standard name, e.g., in this file

/mnt/CORDEX_CMIP6_tmp/sim_data/CORDEX-CMIP6/DD/EUR-12/IDL-FCUL/ERA5/evaluation/r1i1p1f1/WRF451Q/v1-r1/day/hurs/v20240630/hurs_EUR-12_ERA5_evaluation_r1i1p1f1_IDL-FCUL_WRF451Q_v1-r1_day_1980010100-1980123123.nc

See also (just one example): euro-cordex/jsc-compliance-check#4033

[larsbuntemeyer]

@ritamcardoso There is one more thing: There is a corrupt file

• /mnt/CORDEX_CMIP6_tmp/sim_data/CORDEX-CMIP6/DD/EUR-12/IDL-FCUL/ERA5/evaluation/r1i1p1f1/WRF451Q/v1-r1/6hr/ua1000_EUR-12_ERA5_evaluation_r1i1p1f1_IDL-FCUL_WRF451Q_v1-r1_6hr_1980010100-1980123123.nc

It can happen that it crashes the catalog. Could you remove that? It seems that there was synching interrupted, i guess? Thanks a lot!

[ritamcardoso]

Thank you Lars.
Replaced the offending file. I'm also adding the pressure coordinate to the files