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Major modification in progress for this article - please DO NOT UPDATE THIS PAGE or your edits will get overwritten when the new modified article will be published. Please edit the working copy of this page in the C3S Modified CKB articles or CAMS Modified CKB articles section." |
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From 18th October at 15:00UTC, our FTP server has changed from ftp://dissemination.ecmwf.int to ftp://aux.ecmwf.int From 18th October 15:00UTC, no new data will be published on dissemination.ecmwf.int |
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Warning |
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From 18th October at 15:00UTC, our FTP server has changed from ftp://dissemination.ecmwf.int to ftp://aux.ecmwf.int From 18th October 15:00UTC, no new data will be published on dissemination.ecmwf.int |
Scope
The ECMWF FTP The ECMWF FTP service provides access to real-time data from the CAMS global atmospheric composition system. For product documentation please see here. For a description of the current global model please see here (including information on system upgrades) . For other data access options please see here.
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Please note that the default limit per user is 10 active connections to the FTP server. There is also an overall limit across all users of 2,000 active connections. |
Data location
FTP server | ftp://aux.ecmwf.int |
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Data directories | /DATA/CAMS_GLOBAL/${YYYYMMDDhh} |
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| /DATA/CAMS_GLOBAL_ADDITIONAL which contains individual files of surface level fields (model level 137). |
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| /DATA/CAMS_GLOBAL_TEST/ which contains test data files |
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Retention policy | Forecast are kept for 3 days |
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File naming convention
The file naming convention is based on WMO guidelines as follows:
z_cams_c_ecmf_yyyymmddhhmmss_vvvv_tt_lt_sss_param.[grib|nc]
Where:
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. 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, fc - forecast, an - analysis |
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 |
param | 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 or forecast), level type (surface parameter, pressure level or model level), by step or forecast range and by parameter.
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z_cams_c_ ecmf_20160704000000_prod_fc_pl_012_co.grib
contains all the pressure levels of +12 step CO fields from a forecast started on 7 July 2016 at 00:00 UTC.
z_cams_c_ ecmf ecmf_20160704120000_prod_fc_ml_012_go3.nc nc
contains all the model levels of step 12 O3 fields from a forecast which was started on 7 July 2016 at 12:00 UTC in NetCDF format.
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short name | parameter ID | name | type of variable | type of data (an,fc) | type of level (sfc,pl | ,sfc,ml) |
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aod1240 | 210216 | Total Aerosol Optical Depth at 1240nm | vertically-integrated | an + fc | sfc | aod469 | 210213 | Total Aerosol Optical Depth at 469nm | vertically-integrated | an + fc | sfc | aod550 | 210207 | Total Aerosol Optical Depth at 550nm | vertically-integrated | an + fc | sfc | aod670 | 210214 | Total Aerosol Optical Depth at 670nm | vertically-integrated | an + fc | sfc | aod865 | 210215 | Total Aerosol Optical Depth at 865nm | vertically-integrated | an + fc | sfc | bcaod550 | 210211 | Black Carbon Aerosol Optical Depth at 550nm | vertically-integrated | an + fc | sfc | duaod550 | 210209 | Dust Aerosol Optical Depth at 550nm | vertically-integrated | an + fc | sfc | omaod550 | 210210 | Organic Matter Aerosol Optical Depth at 550nm | vertically-integrated | an + fc | sfc | ssaod550 | 210208 | Sea Salt Aerosol Optical Depth at 550nm | vertically-integrated | an + fc | sfc | soaod550 | 215226 | Secondary organic aerosol optical depth at 550 nm | vertically-integrated | an + fc | sfc | suaod550 | 210212 | Sulphate Aerosol Optical Depth at 550nm | vertically-integrated | an + fc | sfc | niaod550 | 210250 | Nitrate aerosol optical depth at 550 nm | vertically-integrated | an + fc | sfc | amaod550 | 210251 | Ammonium aerosol optical depth at 550 nm | vertically-integrated | an + fc | sfc | pm1 | 210072 | Particulate matter d < 1 um | surface concentration
| fc | sfc | pm10 | 210074 | Particulate matter d < 10 um | surface concentration
| fc | sfc | pm2p5 | 210073 | Particulate matter d < 2.5 um | surface concentration
| fc | sfc | aermr01 | 210001 | Sea Salt Aerosol (0.03 - 0.5 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr02 | 210002 | Sea Salt Aerosol (0.5 - 5 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr03 | 210003 | Sea Salt Aerosol (5 - 20 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr04 | 210004 | Dust Aerosol (0.03 - 0.55 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr05 | 210005 | Dust Aerosol (0.55 - 0.9 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr06 | 210006 | Dust Aerosol (0.9 - 20 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr07 | 210007 | Hydrophilic Organic Matter Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr08 | 210008 | Hydrophobic Organic Matter Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr09 | 210009 | Hydrophilic Black Carbon Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr10 | 210010 | Hydrophobic Black Carbon Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr11 | 210011 | Sulphate Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr16 | 210247 | Nitrate fine mode aerosol mass mixing ratio | concentration in air | an + fc | ml + pl | aermr17 | 210248 | Nitrate coarse mode aerosol mass mixing ratio | concentration in air | an + fc | ml + pl | aermr18 | 210249 | Ammonium aerosol mass mixing ratio | concentration in air | an + fc | ml + pl | aermr01 | 210001 | Sea Salt Aerosol (0.03 - 0.5 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr02 | 210002 | Sea Salt Aerosol (0.5 - 5 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr03 | 210003 | Sea Salt Aerosol (5 - 20 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr04 | 210004 | Dust Aerosol (0.03 - 0.55 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr05 | 210005 | Dust Aerosol (0.55 - 0.9 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr06 | 210006 | Dust Aerosol (0.9 - 20 um) Mixing Ratio | concentration in air | an + fc | ml + pl | aermr07 | 210007 | Hydrophilic Organic Matter Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr08 | 210008 | Hydrophobic Organic Matter Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr09 | 210009 | Hydrophilic Black Carbon Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr10 | 210010 | Hydrophobic Black Carbon Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr11 | 210011 | Sulphate Aerosol Mixing Ratio | concentration in air | an + fc | ml + pl | aermr16 | 210247 | Nitrate fine mode aerosol mass mixing ratio | concentration in air | an + fc | ml + pl | aermr17 | 210248 | Nitrate coarse mode aerosol mass mixing ratio | concentration in air | an + fc | ml + pl | aermr18 | 210249 | Ammonium aerosol mass mixing ratio | concentration in air | an + fc | ml + pl |
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expandaermr19 | 210252 | Biogenic secondary organic aerosol mass mixing ratio | concentration in air | an + fc | ml + pl | aermr20 | 210253 | Anthropogenic secondary organic aerosol mass mixing ratio | concentration in air | an + fc | ml + pl |
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short name | parameter ID | name | type of variable | type of data ( |
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short name | parameter ID | name | type of variable | type of data (an,fc) | type of level (pl,sfc,ml) |
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gtco3 | 210206 | GEMS Total column ozone | vertically-integrated | an +fc | sfc | tc_c2h6 | 218045 | Total column ethane | vertically-integrated | an +fc | sfc | tc_c3h8 | 218047 | Total column propane | vertically-integrated | an +fc | sfc | tc_c5h8 | 218016 | Total column isoprene | vertically-integrated | an +fc | sfc | tc_ch4 | 218004 | Total column methane | vertically-integrated | an +fc | sfc | tc_hno3 | 218006 | Total column nitric acid | vertically-integrated | an +fc | sfc | tc_no | 218027 | Total column nitrogen monoxide | vertically-integrated | an +fc | sfc | tc_oh | 218030 | Total column hydroxyl radical | vertically-integrated | an +fc | sfc | tc_pan | 218013 | Total column peroxyacetyl nitrate | vertically-integrated | an +fc | sfc | tcco | 210127 | Total column Carbon monoxide | vertically-integrated | an +fc | sfc | tchcho | 210128 | Total column Formaldehyde | vertically-integrated | an +fc | sfc | tcno2 | 210125 | Total column Nitrogen dioxide | vertically-integrated | an +fc | sfc | tcso2 | 210126 | Total column Sulphur dioxide | vertically-integrated | an +fc | sfc | tc_h2o2 | 218003 | Total Column Hydrogen Peroxide | vertically-integrated | an + fc | sfc | c2h6tc_glyoxal | 218107 | Total column of glyoxal | vertically-integrated | an + fc | sfc | c2h6 | 217045 | Ethane | concentration in air | an +fc | ml + | 217045 | Ethane | concentration in air | an +fc | pl | c3h8 | 217047 | Propane | concentration in air | an +fc | ml + pl | c5h8 | 217016 | Isoprene | concentration in air | an +fc | ml + pl | ch4_c | 217004 | Methane (chemistry) | concentration in air | an +fc | ml + pl | co | 210123 | Carbon monoxide | concentration in air | an +fc | ml + pl | go3 | 210203 | GEMS Ozone | concentration in air | an +fc | ml + pl | hcho | 210124 | Formaldehyde | concentration in air | an +fc | ml + pl | hno3 | 217006 | Nitric acid | concentration in air | an +fc | ml + pl | no | 217027 | Nitrogen monoxide | concentration in air | an +fc | ml + pl | no2 | 210121 | Nitrogen dioxide | concentration in air | an +fc | ml + pl | oh | 217030 | Hydroxyl radical | concentration in air | an +fc | ml + pl | pan | 217013 | Peroxyacetyl nitrate | concentration in air | an +fc | ml + pl | so2 | 210122 | Sulphur dioxide | concentration in air | an + fc | ml + pl | h2o2 | 217003 | Hydrogen Peroxide | concentration in air | an + fc | pl ml + pl | c2h6 | 217045 | Ethane | concentration in air | an + fc | ml + pl | c3h8 | 217047 | Propane | concentration in air | an + fc | ml + pl | c5h8 | 217016 | Isoprene | concentration in air | an + fc | ml + pl | ch4_c | 217004 | Methane (chemistry) | concentration in air | an + fc | ml + pl | co | 210123 | Carbon monoxide | concentration in air | an + fc | ml + pl | go3 | 210203 | GEMS Ozone | concentration in air | an + fc | ml + pl | hcho | 210124 | Formaldehyde | concentration in air | an + fc | ml + pl | glyoxal | 217107 | Glyoxal | concentration in air | an + fc | ml + pl | hno3 | 217006 | Nitric acid | concentration in air | an + fc | ml + pl | no | 217027 | Nitrogen monoxide | concentration in air | an + fc | ml + pl | no2 | 210121 | Nitrogen dioxide | concentration in air | an + fc | ml + pl | oh | 217030 | Hydroxyl radical | concentration in air | an + fc | ml + pl | pan | 217013 | Peroxyacetyl nitrate | concentration in air | an + fc | ml + pl | so2 | 210122 | Sulphur dioxide | concentration in air | an + fc | ml + pl | h2o2 | 217003 | Hydrogen Peroxide | concentration in air | an + fc | ml ml + pl |
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title | Other (lsm, z, density, uvbed, uvbedcs) |
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short name | parameter ID | name | type of variable | type of data (an,fc) | type of level (pl,sfc,ml) |
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lsm | 172 | Land-sea mask | 2D parameter | an | sfc | z | 129 | Geopotential | 2D parameter | an | sfc | uvbed | 214002 | UV biologically effective dose | 2D parameter | fc | sfc | uvbedcs | 214003 | UV biologically effective dose clear-sky | 2D parameter | fc | sfc | den | 3089 | Density | 3D parameter | an + fc | pl | den | 3089 | Density | 3D parameter | an + fc | ml | lnsp | 152 | Logarithm of surface pressure | 2D parameter | an + fc | ml | z | 129 | Geopotential | 2D parameter | fc | ml | q | 133 | Specific humidity | 3D parameter | fc | ml | t | 130 | Temperature | 3D parameter | fc | ml | u | 131 | U-component of wind | 3D parameter | fc | ml | v | 132 | V-component of wind | 3D parameter | fc | ml | w | 135 | Vertical velocity | 3D parameter | fc | ml |
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Data volumes per model cycle
The data volumes are based on the current CAMS experiment (link).
Data volumes per model cycle
The data volumes are based on the current CAMS experiment (link) and for guidance only.
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Due to the new compression method used, the GRIB file sizes vary much more than before. I this table the numbers are averages. * Please be aware that, the total volume will vary from one model run to the next one. |
file size (GRIB / NC) | No. of fields |
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per file | No. of variables | No. of files (GRIB or NC) | Total size (GRIB) | Total size (NC) |
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sfc1.2 800 kB11515 | 18 MB | 12 MB30 20 1624697 465 ml70 47 601625 | 1,7 GB | 1,1 GBsfc1.2 800 kB1263388 | 3,9 2,6 30 20 2498428 19 ml70 47 MB6025102568 45 | Total | | 5461 | 102 GB | 68
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