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Dear Thomas et al. If I've understood correctly, two different solutions have been suggested to the issue of duplicated status_flag variables. * Have only one status_flag variable, with flag_values and flag_meanings attributes. This one variable will be pointed to by the ancillary_variables attribute of several data variables. This means we need a new convention for the standard_name attribute so that it can be associated with data variables that may have various standard_names. * Have a separate status_flag variable for each data variable. In that case the standard_name can be specific to the data variable. To avoid repeating the definitions of flags, introduce a new convention to allow the flag_values and flag_meanings attributes to be attached to a separate container variable that can be pointed to by all the data variables. Clearly there are use cases that need attention in some way, but it would be preferable to make no more than one change to the CF standard. Which of these approaches is preferable, or are there others that people have in mind? Cheers Jonathan
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