First of all, I want to start acknowledging the huge effort and challenge that this migration must be.
Our services deeply depend on CDS data, therefore smooth transition to the Beta system it’s critical for us.
The file size of a month reduced drastically (2GB instead of 10GB), which we are really happy about.
However, we noticed that the new ERA 5 Land has a new variable, valid_time, while leaving a non used variable, time, there.
Is there any reason for it? Is this change permanent, or will be rolled back to a unique, useful, variable called time?