#156: Extension to external_variables Syntax for Masks and Area Fractions
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Reporter: martin.juckes | Owner: cf-conventions@…
Type: enhancement | Status: new
Priority: medium | Milestone:
Component: cf-conventions | Version:
Resolution: | Keywords:
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Comment (by martin.juckes):
Dear Jonathan,
The specific use-case that motivated this proposal, which I should have
included, was analysing some data which was masked by the sea_ice, and
wanting to access the appropriate variable describing the mask. The masked
area might be the same as the area of data having missing values, but it
might not, so the only way to be sure that the analysis deals with the
appropriate masked area is to have the array defining the mask. E.g. if
there are missing data in the unmaksed area you may want to fill them in.
I think this is at the same level of importance as providing the
cell_measures variable: it is a spatially varying field which is critical
to analysis of fields which are defined through it.
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Ticket URL: <http://cf-trac.llnl.gov/trac/ticket/156#comment:4>
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