Monitoring atmospheric composition & climate
Data Access to GFAS 1.2 through FTP

Model description

The description of GFASv1.2 can be found here: link. A more general documentation on GFAS can also be found here : link

Data access

If you are interested in getting access to this dataset please read and accept the MACC-II data licence and then contact us.

File naming convention

We've adopted a file naming convention based on WMO guidelines as follows:



ecmf  is the WMO location indicators. The list can be found here.
yyyymmddhhmmss  is the base date and time of the forecast.
vvvv  is a version or experiment identifier. gfas is used for GFAS products, prod will be used for operational products, test (or experiment ID) will be used for testing purposes, rean for reanalysis if needed.
tt  type of data, from fc, an, ...
lt  is the type of level. pl for pressure level products, sfc for surface fields, ml for model level fields
sss  is the forecast hour time step. For accumulation and averages, it is the end time. This number must be zero padded to 3 digits, e.g. step 24 is given as 024

 is the parameter short name as defined here

grib, nc

 is the format of a file, GRIB or NETCDF

Data organisation

The dataset is grouped by type of product (analysis only here), level type (surface parameter only here), by step (always 0 here) or forecast range (always 0 here) and by parameter. Biomass burning emissions are available on a daily basis, always with time 12:00:00.


  1. z_macc_c_ecmf_20140129120000_gfas_an_sfc_000_co2fire.grib contains analysis field of biomass burning emissions of CO2 on 29th January 2014 (valid 0 UTC on 29th to 0UTC on 30th).
  1. z_macc_c_ecmf_20140129120000_gfas_an_sfc_000_tcfire.grib contains analysis field of biomass burning emissions of Carbon on 29th January 2014.

Data availability

The latest forecasts are normally available at 06:00 UTC. After the data transfer to the ftp server is completed a manifest file is uploaded:


This is a text file which contains the list of all the files and is uploaded only when all the data is available.

List of available parameters

Analysis surface parameters

short namename
co2fire Wildfire flux of Carbon Dioxide
cofire Wildfire flux of Carbon Monoxide
ch4fire Wildfire flux of Methane
nmhcfire Wildfire flux of Non-Methane Hydro-Carbons
h2fire Wildfire flux of Hydrogen
noxfire Wildfire flux of Nitrogen Oxides NOx
n2ofire Wildfire flux of Nitrous Oxide
pm2p5fire Wildfire flux of Particulate Matter PM2.5
tpmfire Wildfire flux of Total Particulate Matter
tcfire Wildfire flux of Total Carbon in Aerosols
ocfire Wildfire flux of Organic Carbon
bcfire Wildfire flux of Black Carbon
cfire Wildfire overall flux of burnt Carbon
offire Wildfire fraction of area observed
frpfire Wildfire radiative power
crfire Wildfire combustion rate
so2fire Wildfire flux of Sulfur Dioxide
ch3ohfire Wildfire Flux of Methanol (CH3OH)
c2h5ohfire Wildfire Flux of Ethanol (C2H5OH)
c3h8fire Wildfire Flux of Propane (C3H8)
c2h4fire Wildfire Flux of Ethene (C2H4)
c3h6fire Wildfire Flux of Propene (C3H6)
c5h8fire Wildfire Flux of Isoprene (C5H8)
terpenesfire Wildfire Flux of Terpenes (C5H8)n
toluenefire Wildfire Flux of Toluene_lump (C7H8+ C6H6 + C8H10)
hialkenesfire Wildfire Flux of Higher Alkenes (CnH2n, C>=4)
hialkanesfire Wildfire Flux of Higher Alkanes (CnH2n+2, C>=4)
ch2ofire Wildfire Flux of Formaldehyde (CH2O)
c2h4ofire Wildfire Flux of Acetaldehyde (C2H4O)
c3h6ofire Wildfire Flux of Acetone (C3H6O)
nh3fire Wildfire Flux of Ammonia (NH3)
c2h6sfire Wildfire Flux of Dimethyl Sulfide (DMS) (C2H6S)
c2h6fire Wildfire Flux of Ethane (C2H6)
mami Mean altitude of maximum injection
apt Altitude of plume top
c7h8fire Wildfire Flux of Toluene (C7H8)
c6h6fire Wildfire Flux of Benzene (C6H6)
c8h10fire Wildfire Flux of Xylene (C8H10)
c4h8fire Wildfire Flux of Butenes (C4H8)
c5h10fire Wildfire Flux of Pentenes (C5H10)
c6h12fire Wildfire Flux of Hexene (C6H12)
c8h16fire Wildfire Flux of Octene (C8H16)
c4h10fire Wildfire Flux of Butanes (C4H10)
c5h12fire Wildfire Flux of Pentanes (C5H12)
c6h14fire Wildfire Flux of Hexanes (C6H14)
c7h16fire Wildfire Flux of Heptane (C7H16)

Auxillary data

GFED3_dominantBurningLC_version11112010_GAPFILLED.r720x360MACC_EXTPEATOS.grb.gz 15.3 KB 2014-11-20