Opened 4 years ago

Last modified 4 years ago

#246 new

Fix metadata for accumulation time period in grib and netcdf files

Reported by: Robin Bowen Owned by: Tan Le
Priority: major Component: BOM ACCESS
Keywords: grib metadata UtilsWG Cc: Tan Le, Yi Xiao, Lawrence Rikus, Peter Steinle, Gary Dietachmayer

Description

um2grb and g2nc produce grib and netcdf files with incorrect values for the accumulation time period for fields with accumulated data.
This is due to problem with converting um pp files to grib.
The incorrect value is a fixed one of 3 hours and was implemented as a work around in the early days of um2grb.
This needs to be revisited and proper handling of the metadata done in the conversion.
It is possible the problem is in the STASH output ?
Priority is unknown, do we want it for APS2 ? To be determined.
I think we do want it for APS3 to ensure all metadata is correct in grib and netcdf files.
Tan to evaluate effort needed to fix the issue.

Change History (3)

comment:1 Changed 4 years ago by Robin Bowen

Cc: Yi Xiao added; yix548 removed

comment:2 Changed 4 years ago by Peter Steinle

Keywords: UtilsWG added

Just added UtilsWG until found to definitely not be a Utils Working Group issue

comment:3 Changed 4 years ago by Martin Dix

Is there a sample UM output file somewhere? I can check what iris does with the time dimension.

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