Dear Mark > This is an explicit piece of metadata which is provided by some systems and > models and is applied to the ensemble collection, rather than statistics > derived from that collection. > > In most cases there will be no CellMethod but there will be a realization > dimension and coordinate. > > This piece of metadata could be considered to be: > 'The expected length of the realization coordinate and dimension, if the > whole ensemble collection is present.' > > This is preserved during subset operations, so that I may be looking one > ensemble member, with a realization coordinate value of 4, but I know that > this is from an ensemble of 17 members. > > This is useful metadata which is available from some models and we would like > to preserve it in a standardised way in our CF NetCDF data sets.
Do you mean "The expected length of the realization coordinate and dimension, if the whole ensemble *was* present"? I mean, is the whole ensemble present or not? I'm sorry, I'm not clear what you mean still. If the whole ensemble *is* present, then isn't the number of ensemble members equal to the size of the ensemble dimension, as Jim said? Cheers Jonathan _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
