[RESCHEDULE] [Info] Removing Sentinel-5p *.cdl from product download 

Dear Customer,

Following consolidated user feedback, and to streamline the delivery of Sentinel-5P data within the Creodias/CDSE please be informed that the delivery package (.zip) for Sentinel-5p products downloaded via the Creodias/CDSE will be changed starting from 19 November 2024. The *.cdl file that is currently within the Sentinel-5p download .zip products is planned to be permanently removed for all Sentinel-5p archive.  

Importantly, once the change is implemented, the product download service will provide to users directly the S-5p products in the native format (*.nc) instead of the concatenated *.zip file as currently.  This will start with the fresh products and will gradually apply to downloads for the entire S-5p repository as the *cdl is gradually removed. 

Removing *.cdl will start on 19 November 2024 and will last several weeks. As a part of this activity all traces and checksums as published via the catalogue and in the traceability service will be recalculated.  

The rationale for this change is that the *.cdl content is redundant to internal metadata of the NetCDF file and therefore unnecessary. If needed this file can be re-produced with the ncdump tool which is part of NetCDF package (https://www.unidata.ucar.edu/software/netcdf/). Command to extract NetCDF header into .cdl file: 

ncdump –h filename.nc > filename.cdl 

Providing direct access to the data through the http download will facilitate online processing e.g. via STAC interfaces. 

A follow-up notification will be published once the removal of files is completed. 

Thank you for your patience and understanding in this matter. If you have any questions or require further assistance, please do not hesitate to contact our support team.

Best regards,
CREODIAS Support Team