The stratosphere GDT netCDF conventions 12. Physical quantity of a variable These conventions standardise three string attributes for specifying the physical quantity of data and coordinate variables.
Case is significant in the units .
This attribute is optional. The purpose of defining a list is to allow users of data from different sources to decide which quantities are comparable. Case is not significant in the quantity . The quantity table defines the quantity and a permissible unit for each quantity. Any legal and physically equivalent unit would be an acceptable units attribute.