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Due to historical reason analysis date and time values are currently encoded incorrectly in MACC_GFAS file and directory names so dates :

  • Date in directory

...

  • name does not match

...

  • date in file name.
  • Step value is encoded incorrectly in current GRIB files.

Here is

...

a file name and content of

...

recent GFAS analysis: 

Code Block
languagebash
themeMidnight
titleMACC_GFAS
/DATA/MACC_GFAS/20170913> ls *frpfire.grib
-rw-r--r--    1 anonymou ec         25920120 Sep 13 05:30 z_macc_c_ecmf_20170912120000_gfas_an_sfc_frpfire.grib

/DATA/MACC_GFAS/20170913> grib_ls -p date,time,step z_macc_c_ecmf_20170912120000_gfas_an_sfc_frpfire.grib
date        time        step        
20170912    1200        0          

This file contains 00:00 - 23:59 analysis from the 12 Sep.

To make fix the incorrect directory and file names more compliant with ECMWF practices, we've created a new parallel stream called CAMS_GFAS with The new stream contains exactly the same GFAS data but using uses a more consistent logical file naming and date convention.

The same data from the above example is available in this file in the new stream under new file name:

Code Block
languagebash
themeMidnight
titleCAMS_GFAS
/DATA/CAMS_GFAS/20170912> ls *frpfire.grib
-rw-r--r--    1 anonymou ec         25920120 Sep 13 05:29 z_cams_c_ecmf_20170912000000_gfas_an_sfc_frpfire.grib

/DATA/CAMS_GFAS/20170912> grib_ls -p date,time,step z_cams_c_ecmf_20170912000000_gfas_an_sfc_frpfire.grib
date        time        step        
20170912    0           0-24       

The data will become available in the new stream at the same time as in the existing MACC_GFAS stream until December 2017 July 2018, when old MACC_GFAS stream will be phased discontinued out.