OK, I've worked out that the E values represent ECMWF defined values,
and N values represent NCEP definded values (GRIB values 128-254
reserved for originating centre).
________________________________
From: Comiskey, Glenn
Sent: 20 October 2011 14:45
To: 'cf-metadata at cgd.ucar.edu'
Subject: RE: Standard Name Table - GRIB column
Further to my posting, and hopefully explain a bit more why I am
querying this, can someone explain what the distinction between standard
names "land_area_fraction" and "land_binary_mask" is. I have a dataset
with a GRIB-1 variable value of 81 which would imply a standard_name of
"land_area_fraction", but the variable is named "Land_cover_land1sea0"
and only has values "1.0" and "0.0" and standard name"land_binary_mask"
would seem more appropriate - which has a GRIB variable value listed as
E172.
________________________________
From: Comiskey, Glenn
Sent: 20 October 2011 14:10
To: 'cf-metadata at cgd.ucar.edu'
Subject: Standard Name Table - GRIB column
In the standard name table what do the E numbers in the GRIB column
denote, i.e. E151 (air_pressure_at_sea_level), E130 (air_temperature). I
understand what the plain numerical values represent, i.e. 1 equals
pressure, 2 equals pressure reduced to MSL etc. Having decoded some GRIB
1 data files (Binary Viewer) I recognise the use of the plain numerals
as per GRIB tables, but haven't seen any E values and can't find
anything to explain what they are.
Regards,
Glenn
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