This field is very large and is stored as a set of files, I am working on getting features to work. Operations on this field will take a long time, more than one hour.
You will have to register to use this feauture of the Climate Explorer.
usage: describefield infile.[ctl|nc] [file2 ...]
The associated land/sea mask
is available for some operations
Construct a statistical forecast model from this field
Contains modified Copernicus Climate Change Service information.
Please read and agree to the Copernicus license
Please consider downloading this field from the authoritative site.
If you really want to get it here,
ERA5 Z500 is available as