Iceberg restarts trigger bug in some versions of netCDF

[russfiedler]

Just a heads up for people.

The iceberg restarts trigger a subtle bug mentioned here Unidata/netcdf-c#1496

We can see this from the unlimited dimension and variable i

[raf599@gadi-login-02 runDir]$ ncdump -hs INPUT/icebergs.res.nc

netcdf icebergs.res {
dimensions:
i = UNLIMITED ; // (193312 currently)
variables:
int i ;

Fixed in netCDF 4.7.3

https://github.com/Unidata/netcdf-c/releases/tag/v4.7.3

[thomas-robinson]

Thanks for the info @russfiedler . Since this is fixed in netcdf 4.7.3, do you think we need to do anything about it?

@nikizadehgfdl do you think we need to notify anyone of this issue?

[russfiedler]

Looks like the problem was noticed a couple of years ago but the cause couldn't be found
NOAA-GFDL/icebergs#44

Probably worth putting a note in the README