Hmmm, I was wondering what happened to this group.... Heres a belated comment on the problem of 2d coordinate varibales: > > I was wondering if there was any way in the netCDF standard to have a 2-d dim- > > ension grid, ie, N "coordinates" each of which is a lat-lon pair, and then each > > field is defined on that grid. > > Yes, I did something like this for the UWM/COADS data set (see CDL > below). The problem is that no software appear able to read it > directly. In retrospect, I believe it was a mistake, we should have > adopted something like the COARDS conventions (which I don't whether it > existed back in 1990). I dont see anything in COARDS that deals with this. I have the May 1995 doc. Is there something more recent? > Actually, this idea goes back quite a way. The concept of "referential > attributes" was laid out in a report from the NetCDF Users Working > Group (NUWG) back in 1992.... A more obvious generalization of coordinate variables to the 2D case I think is: float mydata(time, lev, lat, lon); // coordinate system float lev(lev); float lat(lat, lon); float lon(lat, lon); I would like to hear any arguments against this idea, other than the obvious that its not (yet) a convention.