Cecilia:

I've been scanning the correspondence re the history i/o
module, requirements, etc., but have not had time to 
follow in detail. In the meantime, I have somewhat hastily
written a netcdf i/o history interface for the tiegcm, 
which I've been using on the J90's, ute, and blackforest.

I thought you might be interested in looking at it as
one example of a netcdf implementation for a GCM. It is
quite specific to the needs and user interface of this 
particular model, with a simple global 3d coordinate system, 
and not following any particular convention set. But I am 
happy with it for the time being because of the obvious
advantages of netcdf, particularly cross-platform compatability.

I will attach a few of the relevant source files to this
message. I have also put a tar file of the entire source
in ftp://ftp.hao.ucar.edu:122, with file name tgcm14.tar.
Examples of the netcdf output files are in mss:/ROBLE/tgcm14a.

--Ben