Dear Nan > I wish my CF email archive went back a little further, because there's > nothing (since 2004) that I can find that explains the rationale for > this unit. It certainly *looks* like a compromise between a unit for a > non-dimensional variable and PPT
I think it is, but I can't remember the discussion, or whether there is a good reason not to define a dimensionless unit psu=0.001 (but perhaps that has been argued against already in the recent exchange of emails). Best wishes Jonathan _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
