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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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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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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
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 (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 sfcaermr01 210001 Sea Salt Aerosol (0.03 - 0.5 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr02 210002 Sea Salt Aerosol (0.5 - 5 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr03 210003 Sea Salt Aerosol (5 - 20 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr04 210004 Dust Aerosol (0.03 - 0.55 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr05 210005 Dust Aerosol (0.55 - 0.9 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr06 210006 Dust Aerosol (0.9 - 20 um) Mixing Ratio concentration in air an + fcfc ml + pl aermr07 210007 Hydrophilic Organic Matter Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr08 210008 Hydrophobic Organic Matter Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr09 210009 Hydrophilic Black Carbon Aerosol Mixing Ratio concentration in air an + fc ml + fcpl aermr10 210010 Hydrophobic Black Carbon Aerosol Mixing Ratio concentration in air an + fcfc ml + pl aermr11 210011 Sulphate Aerosol Mixing Ratio concentration in air an + fcfc 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 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 RatioNitrate coarse mode aerosol mass mixing ratio concentration in air an + fcfc ml + pl aermr02 aermr18 210002 Sea Salt Aerosol (0.5 - 5 um) Mixing Ratio210249 Ammonium aerosol mass mixing ratio concentration in air an + fcfc ml + pl aermr03 aermr19 210003 Sea Salt Aerosol (5 - 20 um) Mixing Ratio210252 Biogenic secondary organic aerosol mass mixing ratio concentration in air an + fcfc ml + pl aermr04 aermr20 210004 Dust Aerosol (0.03 - 0.55 um) Mixing Ratio210253 Anthropogenic secondary organic aerosol mass mixing ratio concentration in air an + fcml 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 fc ml + pl 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 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_c2h6tcno2 218045210125 Total column ethaneNitrogen dioxide vertically-integrated an +fc sfc tc_c3h8tcso2 218047210126 Total column propaneSulphur dioxide vertically-integrated an +fc sfc tc_ c5h8h2o2 218016218003 Total column isopreneColumn Hydrogen Peroxide vertically-integrated an + fcfc sfc tc_ ch4glyoxal 218004218107 Total column methaneof glyoxal vertically-integrated an + fcfc sfc tc_ hno3clo 218006218174 Total column nitric acidof chlorine monoxide vertically-integrated an + fcfc sfc tc_ noclono2 218027218064 Total column nitrogen monoxideof chlorine nitrate vertically-integrated an + fcfc sfc tc_ ohhcl 218030218200 Total column hydroxyl radicalhydrogen chloride vertically-integrated an + fcfc sfc tc_ panHCN 218013218226 Total column peroxyacetyl nitratehydrogen cyanide vertically-integrated an + fcfc sfc tccoc2h6 210127 Total column Carbon monoxide 217045 Ethane concentration in airvertically-integrated an +fc sfcml + pl tchchoc3h8 210128217047 Total column Formaldehyde Propane concentration in airvertically-integrated an +fc sfcml + pl tcno2c5h8 210125 Total column Nitrogen dioxide 217016 Isoprene concentration in airvertically-integrated an +fc sfc tcso2 210126 Total column Sulphur dioxide ml + pl ch4_c 217004 Methane (chemistry) concentration in airvertically-integrated an +fc sfc tc_h2o2 218003 Total Column Hydrogen Peroxide vertically-integratedml + pl co 210123 Carbon monoxide concentration in air an + fcfc sfcml + pl c2h6 go3 217045210203 EthaneGEMS Ozone concentration in air an +fc ml + pl c3h8 hcho 217047210124 PropaneFormaldehyde concentration in air an +fc ml + pl c5h8 hno3 217016217006 IsopreneNitric acid concentration in air an +fc ml + pl ch4_c no 217004 Methane (chemistry)217027 Nitrogen monoxide concentration in air an +fc ml + pl co no2 210123210121 Carbon monoxideNitrogen dioxide concentration in air an +fc ml + pl go3oh 210203217030 GEMS OzoneHydroxyl radical concentration in air an +fc ml + pl hchopan 210124217013 FormaldehydePeroxyacetyl nitrate concentration in air an +fc ml + pl hno3so2 217006210122 Nitric acidSulphur dioxide concentration in air an + fc ml + pl noh2o2 217027217003 Nitrogen monoxideHydrogen Peroxide concentration in air an + fc ml + pl no2c2h6 210121217045 Nitrogen dioxideEthane concentration in air an + fc ml + pl ohc3h8 217030217047 Hydroxyl radicalPropane concentration in air an + fc ml + pl panc5h8 217013217016 Peroxyacetyl nitrateIsoprene concentration in air an + fc ml + pl so2ch4_c 210122 217004 Methane (chemistry)Sulphur dioxide concentration in air an + fc ml + pl h2o2 co 217003210123 Hydrogen PeroxideCarbon monoxide concentration in air an + fc plml + pl c2h6 go3 217045210203 EthaneGEMS Ozone concentration in air an + fc ml + pl c3h8 hcho 217047210124 PropaneFormaldehyde concentration in air an + fc ml + pl c5h8 glyoxal 217016217107 IsopreneGlyoxal concentration in air an + fc ml + pl ch4_c hno3 217004 Methane (chemistry)217006 Nitric acid concentration in air an + fc ml + pl co no 210123217027 CarbonNitrogen monoxide concentration in air an + fc ml + pl go3 no2 210203210121 GEMS OzoneNitrogen dioxide concentration in air an + fc ml + pl hchooh 210124217030 FormaldehydeHydroxyl radical concentration in air an + fc ml + pl hno3pan 217006217013 Nitric acidPeroxyacetyl nitrate concentration in air an + fc ml + pl no so2 217027210122 Nitrogen monoxideSulphur dioxide concentration in air an + fc ml + pl no2h2o2 210121217003 Nitrogen dioxideHydrogen Peroxide concentration in air an + fc ml + pl ohclo 217030217174 Hydroxyl radicalChlorine monoxide concentration in air an + fc ml + pl panclono2 217013217064 Peroxyacetyl Chlorine nitrate concentration in air an + fc ml + pl so2hcl 210122217200 Sulphur dioxideHydrogen chloride concentration in air an + fc ml + pl h2o2 HCN 217003217226 Hydrogen Peroxidecyanide concentration in air an + fc mlml + 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 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
Data volumes per model cycle
The data volumes are based on the current CAMS experiment (link).
135 Vertical velocity 3D parameter fc ml
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. 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 Atmosphere 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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