Cell methods for SImon.sidmassevapsubl

[znichollscr]

Apologies if this is a duplicate of some other conversation (I read through open issues and couldn't find it).

Cell methods are currently "area: mean where sea time: mean". The area label in the branding suffix is "si", which is inconsistent.

Is the area label wrong, or should the cell methods be updated (to e.g. "area: mean where sea_ice")?

@bethdingley could you help tag the right people here please?

@taylor13 @wolfiex FYI

[znichollscr]

Branded variable name marked as provisional in DR v1.2.2 so this is a known issue (will leave it open for my own reference, but this is probably a duplicate of something)

[znichollscr]

Will be fixed by WCRP-CMIP/Variable-Registry#51