Technical test data is available from 1 May 2022 onwards from the MARS archive. A daily updated test dataset is also available for the most recent 3 days on the FTP server.
MARS
If you have access to ECMWF systems you can retrieve test data from MARS archive using keywords:
class=mc expver=0077
You can use this link to directly access the data in the MARS catalogue.
Please note that ecCodes version 2.22.1 or later is required to handle the full range of parameters from this cycle
FTP dissemination
The test dataset is available through new ECPDS FTP dissemination server diss.ecmwf.int in these directories:
/DATA/CAMS_GLOBAL_TEST /DATA/CAMS_GLOBAL_ADDITIONAL_TEST /DATA/CAMS_EUROPE_BC_TEST
You can use your normal FTP account to access the data.
If everything else fails ...
... you can always contact us through the ECMWF Support Portal.