Opened 3 years ago

Last modified 3 years ago

#156 new enhancement

Extension to external_variables Syntax for Masks and Area Fractions — at Initial Version

Reported by: martin.juckes Owned by: cf-conventions@…
Priority: medium Milestone:
Component: cf-conventions Version:
Keywords: Cc:

Description

Ticket #145, now accepted, proposes a new attribute, external_variables, to indicate when a variable referred to in the cell_measures attributes is in another file. This ticket relates to masks and area fractions used in the cell_methods attribute which may be associated with another variable. For instance, if we have cell_methods = area: mean where sea_ice and, in another file, a variable siconc which contains the sea ice area fraction. At present, there is no way within the convention to indicate, in the file containing the cell_methods statement, that the variable siconc is supplied separately.

The proposal is to allow the external_variables attribute to include terms of the form sea_ice:siconc to indicate that an area_type has an associated variable in an external file.

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