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NameUnitsVariable name in CDS APIShortnameParam IDAccess typefcanNote
Ammonium aerosol mass mixing ratiokg kg-1ammonium_aerosol_mass_mixing_ratioaermr18210249Fast accessXX
Carbon monoxidekg kg-1carbon_monoxideco210123Fast accessXX
Dust Aerosol (0.03 - 0.55 um) Mixing Ratiokg kg-1dust_aerosol_0.03-0.55um_mixing_ratioaermr04210004Fast accessXX
Dust Aerosol (0.55 - 0.9 um) Mixing Ratiokg kg-1dust_aerosol_0.55-0.9um_mixing_ratioaermr05210005Fast accessXX
Dust Aerosol (0.9 - 20 um) Mixing Ratiokg kg-1dust_aerosol_0.9-20um_mixing_ratioaermr06210006Fast accessXX
Ethanekg kg-1ethanec2h6217045Fast accessXX
Formaldehydekg kg-1formaldehydehcho210124Fast accessXX
Hydrogen peroxidekg kg-1hydrogen_peroxideh2o2217003Fast accessXX
Hydrophilic Black Carbon Aerosol Mixing Ratiokg kg-1hydrophilic_black_carbon_aerosol_mixing_ratioaermr09210009Fast accessXX
Hydrophilic Organic Matter Aerosol Mixing Ratiokg kg-1hydrophilic_organic_matter_aerosol_mixing_ratioaermr07210007Fast accessXX
Hydrophobic Black Carbon Aerosol Mixing Ratiokg kg-1hydrophobic_black_carbon_aerosol_mixing_ratioaermr10210010Fast accessXX
Hydrophobic Organic Matter Aerosol Mixing Ratiokg kg-1hydrophobic_organic_matter_aerosol_mixing_ratioaermr08210008Fast accessXX
Hydroxyl radicalkg kg-1hydroxyl_radicaloh217030Fast accessXX
Isoprenekg kg-1isoprenec5h8217016Fast accessXX
Methanekg kg-1methanech4_c217004Fast accessXX

Differences between CH4 and CH4_C

Nitrate coarse mode aerosol mass mixing ratiokg kg-1nitrate_coarse_mode_aerosol_mass_mixing_ratioaermr17210248Fast accessXX
Nitrate fine mode aerosol mass mixing ratiokg kg-1nitrate_fine_mode_aerosol_mass_mixing_ratioaermr16210247Fast accessXX
Nitric acidkg kg-1nitric_acidhno3217006Fast accessXX
Nitrogen dioxidekg kg-1nitrogen_dioxideno2210121Fast accessXX
Nitrogen monoxidekg kg-1nitrogen_monoxideno217027Fast accessXX
Ozonekg kg-1ozonego3210203Fast accessXX
Peroxyacetyl nitratekg kg-1peroxyacetyl_nitratepan217013Fast accessXX
Propanekg kg-1propanec3h8217047Fast accessXX
Sea Salt Aerosol (0.03 - 0.5 um) Mixing Ratiokg kg-1sea_salt_aerosol_0.03-0.5um_mixing_ratioaermr01210001Fast accessXXCAMS global sea salt aerosol mixing ratios
Sea Salt Aerosol (0.5 - 5 um) Mixing Ratiokg kg-1sea_salt_aerosol_0.5-5um_mixing_ratioaermr02210002Fast accessXXCAMS global sea salt aerosol mixing ratios
Sea Salt Aerosol (5 - 20 um) Mixing Ratiokg kg-1sea_salt_aerosol_5-20um_mixing_ratioaermr03210003Fast accessXXCAMS global sea salt aerosol mixing ratios
Specific humiditykg kg-1specific_humidityq133Fast accessXX
Sulphate Aerosol Mixing Ratiokg kg-1sulphate_aerosol_mixing_ratioaermr11210011Fast accessXX
Sulphur dioxidekg kg-1sulphur_dioxideso2210122Fast accessXX
TemperatureKtemperaturet130Fast accessXX
U component of windm s-1u_component_of_windu131Fast accessXX
V component of windm s-1v_component_of_windv132Fast accessXX

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  1. Convert mass mixing ratio (MMR) to mass concentration or to volume mixing ratio (VMR)

  2. Representations of SO2 and SO4 in CAMS reanalysis

  3. CAMS global sea salt aerosol mixing ratios
  4. For details on how convert from mixing ratio (kg per kg dry air) to concentration (kg/m3): CAMS Surface concentration of a given species

  5. Anchor
    uv_index
    uv_index

    Expand
    titleUV Index definition and computation

    CAMS provides a global solar UV index forecast (from the ADS), conforming to the WHO definition.

    UV Index data is available as:

    To generate this data, we compute the surface down-welling spectral solar irradiance in the range 280-340nm at 5nm resolution taking into account local surface albedo, aerosol, clouds and ozone in the model profile. This is then convoluted with the erythema spectrum, resulting in the biologically active UV radiation. For more details please have a look here.

    UV Index plots are available showing:

    corresponding to the two UV index parameters described above. To create the plots we divide the UV biologically effective dose rate by 0.025 W/m2 (i.e. multiplied by 40), resulting in the dimensionless UV index where one unit of measurement (ie the difference between UV Index X and X+1) represents 25mW/m2 of UVA and UVB radiation absorbed by the human skin.

    UV Index values are instantaneous, not cumulated.



  6. Expand
    titleWeb charts of biomass-burning AOD

    The actual aerosol species represented in the model are defined more according to their chemical composition (e.g. sulphate, black carbon, organic matter) rather than their source type (e.g. biomass burning or fossil fuels).

    What is presented on the web charts as "biomass-burning AOD" is the sum of organic matter AOD (omaod550) and black carbon AOD (bcaod550). Organic matter is almost always the dominant component out of these.

    Historically, biomass-burning was the main source of such aerosols in the model, apart from a much lower background of primary OM+BC from fossil fuels and of OM from biogenic secondary organic aerosol (SOA).

    However, since a representation of anthropogenic SOA as a source of OM was added (in cycle 43r1, implemented in January 2017), the model also captures the relatively high levels of this OM around polluted cities.

    To sum up, if you want the data used for those web charts, take omaod550+bcaod550 (which will usually be fairly close to omaod550 alone). However, note that this will also show significant aerosol plumes from anthropogenic pollution as well as biomass burning.


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