Hi,
we're used to distribute our NWP model-data using aggregation in
thredds, either a simple 'best-estimate' aggregation or a FMRC
aggregation. The model-output for one analysis-time is usually stored
within one file which is then aggregated, e.g.
http://thredds.met.no/thredds/catalog/metno/proff4km/default/
To have the forecast_reference_time stored within the files, we use a
scalar variable as explained in
http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#scalar-coordinate-variables
In above example the scalar variable is called 'runtime'.
As soon as we use aggregation, this scalar 'runtime' variable gets only
the value of the penultimate file, and this is wrong in nearly all cases.
In FMRC, it would probably be best to remove this variable for all
aggregations except for the 'File Access', since in the other cases, the
forecast_reference_time is added automatically, but I don't know if this
is possible.
Is there a proposed way to use the forecast_reference_time together with
aggregation? What are others using?
Sorry for cross-posting - in case of aggregation, I'm not sure if this
is a thredds or netcdf-java issue.
Best regards,
Heiko
