Dear list,
I have not come across any mention of netCDF4 groups (and other netCDF4
features) in the CF conventions. I was wondering if there are nevertheless
standard ways to use groups.
For example, I have repackaged some statistics data (csv files) from met
masts in netCDF4. I've been trying to apply the CF conventions, but bump
into issues, e.g., of duplication.
Currently, the structure I use is:
root level:
* time dimension/variable
* per-instrument-type groups
instrument level:
* height (of instrument) dimension/variable
* instrument metadata attributes (not covered by CF conventions)
* signal groups (some instruments measure more than one signal)
signal level:
* signal specific metadata, e.g., units (covered by CF conventions, but
for variables)
* signal statistics variables
statistics variables:
* data
* some statistic-specific attributes like cell_methods
* should I duplicate the signal metadata such as unit here?
The group structure is helpful, because its structure improves
self-descriptiveness, I feel. I guess the structure is also a form of
metadata. But perhaps it is considered out-of-scope for the CF conventions?
Best,
Erik
--
https://ac.erikquaeghebeur.name
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