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Cristina, > I work for National research center in roma, in a oceanographic group. > I'm creating a netcdf for Chlorophyll data. Usually oceanographic file > were in hdf and chlorophyll is expressed in "micro gram" that is 1e-06 > kg. "micro" is a prefix rather than a word, so the unit should be "microgram" or "micrograms". A microgram is not 1e-6 kilograms; it is 1e-9 kilograms. A milligram is 1e-6 kilograms. > As I must be compliant with CF convention, > I need to be sure to put the right name for "micro gram" into the netcdf file. > > I installed the UDUNITS-2 package our workstation and using udunits2 I obtain: > > 1 microkg = 1e-06 kg > > So....the question is: > > 1) Is it correct to use "microKg" for 1e-06 kg "microKg" mixes a spelled-out prefix (micro) with a symbol (Kg) -- which is not good. "Kg" doesn't mean anything. The symbol for kilogram is "kg". > 2) does it exist any alias? I suggest using "microgram" or "milligram" for your unit attribute -- depending on what unit you actually use. > Thanks in advance > > Cristina tronconi > > ------------------------------------------------------------------- > Cristina Tronconi > Istituto di Scienze dell'Atmosfera e del Clima - sezione di Roma > Consiglio Nazionale delle Ricerche > Via Fosso del Cavaliere 100 > 00133 Roma, Italy > Tel: +39 06 49934342 > cell: '39 349 1242954 > Fax: +39 06 20660291 > e-mail: address@hidden Regards, Steve Emmerson Ticket Details =================== Ticket ID: UVU-592022 Department: Support UDUNITS Priority: Normal Status: Closed