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Since Fews versions 2016.02, new NetCdf version 4.6 is used to read grib2 files. Grib2 parameter names, provided by NetCdf 4.6, are different from those provided by the previous NetCdf version 4.2

When you install 2016.02 (or higher), then the grib2 IdMap files are no more valid, since the existing parameter names cannot be matched anymore with the parameter names provided by NetCdf 4.6 You must amend grib2 parameter names in your IdMap files. To find out new parameter names, use Fews 2016.02 or Panoply vieuwer.

How to use Fews 2016.02 to find out new grib2 parameter names:

• In ManualForecast display select your workflow that imports grib2 files
• Select “4 Select modules to include in next run…” from F12 menu and tick the check box of the grib2 import module
• Select “5 Select modules to log debug messages in next run…” from F12 menu and and tick the check box of the grib2 import module
• Run the workflow

• Search in the Logs panel the message:

  “Import

  No Format
  Import.Debug:External parameter {parameter

  _

  name} can not be mapped to FEWS parameter with id map IdMapFiles/{

  IdMap

  IdMa}

  . An

  For example:

  “Import

  No Format
  Import.Debug:External parameter Total_precipitation_surface_36_Hour_Accumulation_ens can not be mapped to FEWS parameter with id map IdMapFiles/IdMapGrid.xml

  .

  The message contains parameter name available in the grid2 file. Enter parameter name from the message in the IdMap file, for example :

  No Format
  <parameter external="Total_precipitation_surface_36_Hour_Accumulation_ens" internal="FMAP"/>.

How to use Panoply to find out new grib2 parameter names:

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