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A new production suite will replace experiment g6ek as provider of GFAS products on 30 April 2018. The major benefit should be a generally improved availability and timeless of GFAS products. Additionally, these changes will be noticed by users:

Old dissemination stream MACC_GFAS (linked to experiment version g6ek) will be phase out (see Service change September 2017).
Experiment g6ek will be eventually stopped and its data might not be archived in mars after 30 April 2018.
The dissemination stream CAMS_GFAS (linked to experiment version 0001) directory will contain new files, for additional parameters "Altitude of plume bottom" and "Injection heigh", in grib and NetCDF format.

filename	param/name	Long Name	units
z_cams_c_ecmf_YYYYMMDD00_gfas_an_sfc_apb.nc	apb	Altitude of plume bottom	m
z_cams_c_ecmf_YYYYMMDD00_gfas_an_sfc_apb.grib	242.210	Altitude of plume bottom	m
z_cams_c_ecmf_YYYYMMDD00_gfas_an_sfc_injh.nc	injh	Injection heigh (from IS4FIRES)	m
z_cams_c_ecmf_YYYYMMDD00_gfas_an_sfc_injh.grib	60.210	Injection heigh (from IS4FIRES)	m

"Injection heigh" (parameter 60.210) is only defined for ecCodes package, version 2.7.0. You will need this version of the package to decode a grib file containing this parameter.
Public dataset cams-gfas web interface will show additional parameters "Altitude of plume bottom" and "Injection heigh".

If you are interested in getting new production suite's test data, please see Accessing GFAS test data (expver 9601).