Dear Karl > Let me know if use of dB without reference is stupid.
dB could be used without a reference level if the quantity before the logarithm was taken was already dimensionless. It doesn't make sense to take the log of something which has a unit. A reference level might not be stated, I suppose, if it was assumed that the quantity before logarithm was in a certain unit. That means the reference level is implicitly one of those units. Best wishes Jonathan _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
