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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 service provides access to real-time data from
Scope
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.
Please see the list of available atmospheric available atmospheric composition variables below and make sure your variables of interest are available. Please create an query Should you require any additional species, please raise a request through the ECMWF Support Portal (Charts and Data > Get our products ) if you require any additional speciesECMWF login required).
User accounts
To get access to CAMS global data, you need user accounts on the ECMWF website, and on the ECMWF FTP service.
- Log on to www.ecmwf.int. (If you do not have an account create one)
- Read the CAMS data licence and the Licence to Use Copernicus Productsand accept the license at the bottom of the page.
- Contact us by creating a ticket through the ECMWF Support Portal (Charts and Data > Get our products ), providing
- the user name you used to log into www.ecmwf.int and accept the license
- for our service planning, a brief description of how you intend to use the data, and which chemical species are most relevant for you
Data location
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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 server | ftp://disseminationaux.ecmwf.int | |
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Data directories | /DATA/CAMS_GLOBAL/${YYYYMMDDhh} | ||
/DATA/CAMS_GLOBAL_ADDITIONAL which contains individual files of surface level fields (model level 137). | |||
/DATA/CAMS_GLOBAL_TEST/ which contains test data files | |||
Retention policy | Forecast are kept for 3 days |
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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 |
| is the format of a file, GRIB or NETCDF |
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z_cams_c_ ecmf_20160704120000_prod_fc_ml_012_go3.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.
Data
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The latest model cycle based on the 00 UTC analysis is normally available by 10:00 UTC, the cycle based on 12 UTC analysis is available by 22:00 UTC.
After the data transfer to the ftp server is completed a manifest file is uploaded:
z_cams_c_ecmf_yyyymmddhhmmss_vvvv.manifest
The file is uploaded to the server only after all the data files have been successfully uploaded. The file contains a list of all the GRIB and NetCDF files in the cycle and their MD5 checksums in case you would like to verify data integrity.
List of available parameters
format
Model level fields are in GRIB2 format. All other fields are in GRIB1, except for new parameters from cycle 48r1 (more details are available here). NetCDF format is also available.
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From cycle 48R1, there are important changes to the GRIB encoding for model levels fields, relating to packing and GRIB tables. Please see this page for full details: Implementation of IFS cycle 48r1 for CAMS#ChangetoGRIBencoding The 'packingType' can be changed using ECMWF's ecCodes:
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Data availability
The latest model cycle based on the 00 UTC analysis is normally available by 10:00 UTC, the cycle based on 12 UTC analysis is available by 22:00 UTC.
After the data transfer to the ftp server is completed a manifest file is uploaded:
z_cams_c_ecmf_yyyymmddhhmmss_vvvv.manifest
The file is uploaded to the server only after all the data files have been successfully uploaded. The file contains a list of all the GRIB and NetCDF files in the cycle and their MD5 checksums in case you would like to verify data integrity.
List of available parameters
Expand title Aerosol short name parameter ID name type of variable type of data (an,fc) type of level (sfc,pl,ml) 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 Expand title Aerosol short name parameter ID name type of variable type of data (an,fc) type of level (pl,sfc,ml) 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 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 - 0.5um) Mixing Ratio concentration in air an + fc ml + fcpl aermr02 aermr05 210002210005 Sea SaltDust Aerosol (0. 555 - 50.9 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr03 aermr06 210003210006 Sea SaltDust Aerosol ( 50.9 - 20 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr04 aermr07 210004210007 Dust Aerosol (0.03 - 0.55 um)Hydrophilic Organic Matter Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr05 aermr08 210005210008 Dust Aerosol (0.55 - 0.9 um)Hydrophobic Organic Matter Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr06 aermr09 210006210009 Dust Aerosol (0.9 - 20 um)Hydrophilic Black Carbon Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr07 aermr10 210007 Hydrophilic Organic Matter210010 Hydrophobic Black Carbon Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr08 aermr11 210008210011 Hydrophobic Organic MatterSulphate Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr09 aermr16 210009 Hydrophilic Black Carbon Aerosol Mixing Ratio210247 Nitrate fine mode aerosol mass mixing ratio concentration in air an + fc ml + pl aermr10 aermr17 210010 Hydrophobic Black Carbon Aerosol Mixing Ratio210248 Nitrate coarse mode aerosol mass mixing ratio concentration in air an + fc ml + pl aermr11 aermr18 210011 Sulphate Aerosol Mixing Ratio210249 Ammonium aerosol mass mixing ratio concentration in air an + fc ml + pl aermr16 aermr19 210247 Nitrate fine mode210252 Biogenic secondary organic aerosol mass mixing ratio concentration in air an + fc ml + pl aermr17 aermr20 210248 Nitrate coarse mode210253 Anthropogenic secondary organic aerosol mass mixing ratio concentration in air an + fc ml + pl aermr18 210249 Ammonium aerosol mass mixing ratio concentration in air an + fc pl aermr01 210001 Sea Salt Aerosol (0.03 - 0.5 um) Mixing Ratio concentration in air an + fc ml aermr02 210002 Sea Salt Aerosol (0.5 - 5 um) Mixing Ratio concentration in air an + fc ml aermr03 210003 Sea Salt Aerosol (5 - 20 um) Mixing Ratio concentration in air an + fc ml aermr04 210004 Dust Aerosol (0.03 - 0.55 um) Mixing Ratio concentration in air an + fc ml aermr05 210005 Dust Aerosol (0.55 - 0.9 um) Mixing Ratio concentration in air an + fc ml aermr06 210006 Dust Aerosol (0.9 - 20 um) Mixing Ratio concentration in air an + fc ml aermr07 210007 Hydrophilic Organic Matter Aerosol Mixing Ratio concentration in air an + fc ml aermr08 210008 Hydrophobic Organic Matter Aerosol Mixing Ratio concentration in air an + fc ml aermr09 210009 Hydrophilic Black Carbon Aerosol Mixing Ratio concentration in air an + fc ml aermr10 210010 Hydrophobic Black Carbon Aerosol Mixing Ratio concentration in air an + fc ml aermr11 210011 Sulphate Aerosol Mixing Ratio concentration in air an + fc ml aermr16 210247 Nitrate fine mode aerosol mass mixing ratio concentration in air an + fc ml aermr17 210248 Nitrate coarse mode aerosol mass mixing ratio concentration in air an + fc ml aermr18 210249 Ammonium aerosol mass mixing ratio concentration in air an + fc ml Expand title Gases short name parameter ID name type of variable type of data (an,fc) type of level (pl,sfc,ml) 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 tc_glyoxal 218107 Total column of glyoxal vertically-integrated an + fc sfc tc_clo 218174 Total column of chlorine monoxide vertically-integrated an + fc sfc tc_clono2 218064 Total column of chlorine nitrate vertically-integrated an + fc sfc tc_hcl 218200 Total column hydrogen chloride vertically-integrated an + fc sfc tc_HCN 218226 Total column hydrogen cyanide vertically-integrated an + fc sfc 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 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 Expand title Gases short name parameter ID name type of variable type of data (an,fc) type of level (pl,sfc,ml) 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 c2h6 217045 Ethaneconcentration in air an +fc ml + pl c3h8so2 217047210122 PropaneSulphur dioxide concentration in air an + fc ml + pl c5h8 h2o2 217016217003 IsopreneHydrogen Peroxide concentration in air an + fc ml + pl ch4_c c2h6 217004 Methane (chemistry)217045 Ethane concentration in air an + fc ml + pl co c3h8 210123217047 Carbon monoxidePropane concentration in air an + fc ml + pl go3c5h8 210203217016 GEMS OzoneIsoprene concentration in air an + fc ml + pl hchoch4_c 210124 217004 Methane (chemistry)Formaldehyde concentration in air an + fc ml + pl hno3co 217006210123 Nitric acidCarbon monoxide concentration in air an + fc ml + pl nogo3 217027210203 Nitrogen monoxideGEMS Ozone concentration in air an + fc ml + pl no2hcho 210121210124 Nitrogen dioxideFormaldehyde concentration in air an + fc ml + pl ohglyoxal 217030217107 Hydroxyl radicalGlyoxal concentration in air an + fc ml + pl panhno3 217013217006 Peroxyacetyl nitrateNitric acid concentration in air an + fc ml + pl so2no 210122217027 Sulphur dioxideNitrogen monoxide concentration in air an + fc ml + pl h2o2 no2 217003210121 Hydrogen PeroxideNitrogen dioxide concentration in air an + fc plml + pl c2h6 oh 217045217030 EthaneHydroxyl radical concentration in air an + fc ml + pl c3h8 pan 217047217013 PropanePeroxyacetyl nitrate concentration in air an + fc ml + pl c5h8 so2 217016210122 IsopreneSulphur dioxide concentration in air an + fc ml + pl ch4_c h2o2 217004 Methane (chemistry)217003 Hydrogen Peroxide concentration in air an + fc ml + pl co clo 210123217174 CarbonChlorine monoxide concentration in air an + fc ml + pl go3 clono2 210203217064 GEMS OzoneChlorine nitrate concentration in air an + fc ml + pl hchohcl 210124217200 FormaldehydeHydrogen chloride concentration in air an + fc ml + pl hno3HCN 217006217226 Nitric acidHydrogen cyanide concentration in air an + fc ml no 217027 Nitrogen monoxide concentration in air an + fc ml no2 210121 Nitrogen dioxide concentration in air an + fc ml oh 217030 Hydroxyl radical concentration in air an + fc ml pan 217013 Peroxyacetyl nitrate concentration in air an + fc ml so2 210122 Sulphur dioxide concentration in air an + fc ml h2o2 217003 Hydrogen Peroxide concentration in air an + fc ml + pl Expand title Other (lsm, z, density, uvbed, uvbedcs) short name parameter ID name type of variable type of data (an,fc) type of level (pl,sfc,ml) 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 Expand title Other (lsm, z, density, uvbed, uvbedcs) short name parameter ID name type of variable type of data (an,fc) type of level (pl,sfc,ml) lsm 172 Land-sea mask 2D parameter an sfc
anz 129 Geopotential 2D parameter
sfcfc
uvbedml q 214002 UV biologically effective dose
2D133 Specific humidity 3D
sfcparameter fc
uvbedcsml t 214003 UV biologically effective dose clear-sky
2D130 Temperature 3D
sfcparameter fc
denml u 3089 Density
an +131 U-component of wind 3D parameter
plfc
denml v 3089 Density
an +132 V-component of wind 3D parameter
lnspfc ml w 152 Logarithm of surface pressure
2D135 Vertical velocity 3D
an +parameter fc ml
Data volumes per model cycle
The data volumes are based on the current CAMS experiment (link).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. In this table the numbers are averages. * Please be aware that, the total volume will vary from one model run to the next one. |
average | file size (GRIB / NC) | No. of fields | per file | No. of variables | No. of files (GRIB or NC) | Total size (GRIB) | Total size (NC) | ||||
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an_ | sfc1.2ml | ~ 82 MB/ | 800 kB144 MB | 1137 | 1533 | 15 | 18 MB | 12 MB33 | ~ 3 GB | 4.6 GB | |
an_pl | 30~ 28 MB/ | 2028 MB | 25 | 1632 | 2432 | 697~ 881 MB | 465899 MB | ||||
an_ | mlsfc | 70~ 1 MB/ | 471.3 MB | 601 | 1630 | 25 | 1,7 GB | 1,1 GB30 | ~ 33 MB | 38 MB | |
fc_ | sfc1.2ml | ~ 77 MB/ | 800 kB44 MB | 1137 | 2639 | 3388 | 3,91599 | ~ 120 GB | 2,668 GB | ||
fc_pl | 30~ 28 MB/ | 208.3 MB | 25 | 2432 | 9841312 | 28~ 35 GB | 1910.7 GB | ||||
fc_ | mlsfc | 70~ 1 MB/ | 47 MB435 kB | 601 | 2533 | 10253993 | 68~ 4 GB | 451.7 GB | |||
Totals | Total | 5461 | 102 GB | 686999 | 163 GB* | 87 GB |
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This document has been produced in the context of theCopernicus AtmosphereAtmosphere Monitoring Service (CAMS). The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, operator of CAMS on behalf of the European Union (Delegation Agreement signed on 11/11/2014 and Contribution Agreement signed on 22/07/2021). All information in this document is provided "as is" and no guarantee or warranty is given that the information is fit for any particular purpose. The users thereof use the information at their sole risk and liability. For the avoidance of all doubt , the European Commission and the European Centre for Medium - Range Weather Forecasts have no liability in respect of this document, which is merely representing the author's view. |
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