CF Standard Names - Construction of Atmospheric Chemistry and Aerosol Terms

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This page provides our ideas on how to construct new names for chemistry and aerosols in the future.

Comments to ChristianeTextor or directly on our discussion page are highly welcome!

You can directly modify the tables here, all versions are stored under 'history'. However, in order to keep track of the changes, please send an email to ChristianeTextor.

The ideas in these table are based on work in the PRISM project (Peter van Velthoven) see PRISM Standard Name Tables, latest Version, V 1.3

Table 1 provides the name-components and terms to be used in constructing CF names for Atmospheric Chemistry and Aerosol purposes.

Tables 2 add a list of chemical and aerosol species to be used together with the name components given in table 1.

Tables 3 provide a list of most often used standard names, constructed solely from name components and species already mentioned in tables 1 and 2.

Table 1: Components to construct full CF standard names

Several types of Name-components exist: 1) Compartments; 2) Interface or Origin information; 3) Concentration/mixing ratio/column burden; 4) Fluxes; 5) Optical properties

Missing:

Remarks:

  • articles and prepositions should be avoided
  • try to use SI units (e.g. not hours but seconds)
  • atmosphere_optical_thickness_due_to_X is defined by CF, however: 1) very long name, 2) does not fit with cloud_optical_depth, 3) is there any opt. depth not in the atmosphere? therefore suggestion of this new name/alias"
Construction
Large Scale compartement explanation unit further remark
atmosphere atmosphere, in all phases, if no phase (e.g. in air, in clouds) is given large-scale property, prefix
below_chemical_tropopause from surface to chemical tropopause (150 ppb O3 isosurfac), in all phases, if no phase (e.g. in air, in clouds) is given large-scale property but very long, so not prefix
Medium explanation unit further remark
in_air in humid air locally measurable
in_cloudy_air in cloudy air locally measurable
in_cloud_water within cloud-water or cloud-ice locally measurable
in_rain_water within precipitating rain water locally measurable
in_sea_water in sea water locally measurable
in_stomata in stomata of leaves locally measurable
Horizontal position (surface): Interface or Origin information
from_stratosphere origin in stratosphere
from_troposphere origin of tracer in troposphere
surface at surface level, prefix
xx_tropopause tropopause level (xx: chemical (150 ppv O3 isosurface), more definitions??)
toa top of atmosphere level, prefix
Concentration/mixing ratio/column unit
mass_content vertically integrated mass kg m-2
mole_content vertically integrated moles mole m-2
number_content vertically integrated number 1 m-2
mole_fraction for gases mole mole-1, 1
mass_fraction for gases and aerosols kg kg-1, 1
mass_concentration aerosols mass kg m-3
number_concentration aerosols number 1 m-3


Fluxes [species-unit second-1]
dry_deposition_mass_flux_due_to_turbulence turbulent dry deposition kg m-2 s-1
dry_deposition_mole_flux_due_to_turbulence turbulent dry deposition mole m-2 s-1
dry_deposition_number_flux_due_to_turbulence turbulent dry deposition 1 m-2 s-1
dry_deposition_mass_flux_due_to_sedimentation sedimentation/gravitational settling kg m-2 s-1
dry_deposition_mole_flux_due_to_sedimentation sedimentation/gravitational settling mole m-2 s-1
dry_deposition_number_flux_due_to_sedimentation sedimentation/gravitational settling 1 m-2 s-1
dry_deposition_mass_flux dry deposition due to turbulence and sedimentation kg m-2 s-1
dry_deposition_mole_flux dry deposition due to turbulence and sedimentation mole m-2 s-1
dry_deposition_number_flux dry deposition due to turbulence and sedimentation 1 m-2 s-1
emission_mass_flux emission kg m-2 s-1
emission_mole_flux emission mole m-2 s-1
emission_number_flux emission 1 m-2 s-1
chemical_gross_X_production_rate chemical production rate, X can be mole, mole fraction, mass, etc. [unit of X] s-1
chemical_net_X_production_rate net chemical production rate of X, X can be mole, mole fraction, mass, etc. [unit of X] s-1
chemical_X_destruction_rate chemical destruction rate of X, X can be mole, mole fraction, mass, etc. [unit of X] s-1
chemical_gross_X_production chemical production, X can be mole, mole fraction, mass, etc., time period of production provided by cell method [unit of X]
chemical_net_X_production net chemical production of X, X can be mole, mole fraction, mass, etc., time period of production provided by cell method [unit of X]
chemical_X_destruction chemical destruction of X, X can be mole, mole fraction, mass, etc., time period of production provided by cell method [unit of X]
gases G
chemical_gross_mole_production chemical production mole m-3
chemical_net_mole_production net chemical production mole m-3
chemical_mole_destruction chemical destruction mole m-3
emission_mole_flux_of_G mole m-2 s-1
surface_dry_deposition_mole_flux_of_G mole m-2 s-1
surface_wet_deposition_mole_flux_of_G mole m-2 s-1
chemical_gross_mole_fraction_production_rate_of_G_in_air s-1=mole mole-1 s-1
chemical_net_mole_fraction_production_rate_of_G_in_air s-1=mole mole-1 s-1
chemical_mole_fraction_destruction_rate_of_G_in_air? s-1=mole mole-1 s-1
chemical_gross_mole_fraction_production_G_in_air s-1=mole mole-1
chemical_net_mole_fraction_production_of_G_in_air s-1=mole mole-1
chemical_mole_fraction_destruction_of_G_in_air? s-1=mole mole-1
aerosols A
surface_emission_mass_flux_of_A kg m-2 s-1
surface_dry_deposition_mass_flux_due_to_turbulence_of_A kg m-2 s-1
surface_dry_deposition_mass_flux_due_to_sedimentation_of_A kg m-2 s-1
surface_dry_deposition_mass_flux_of_A kg m-2 s-1
surface_wet_deposition_mass_flux_of_A kg m-2 s-1
chemical_gross_mass_concentration_production_rate_of_A_in_air kg m-3 s-1
chemical_net_mass_concentration_production_rate_of_A_in_air kg m-3 s-1
chemical_mass_concentration_destruction_rate_of_A_in_air kg m-3 s-1
chemical_gross_mass_concentration_production_of_A_in_air kg m-3
chemical_net_mass_concentration_production_of_A_in_air kg m-3
chemical_mass_concentration_destruction_of_A_in_air kg m-3
Velocities
dry_deposition_velocity_due_to_turbulence turbulent dry deposition velocity m s-1
Optical properties / forcing
optical_depth_at_XX_nm aerosol optical depth at wavelength XX nm 1 equivalent to atmosphere_optical_thickness_due_to_X ?
Existing terms for Radiative Forcing forcing specified per species W m-2 to be used with species name (X_forcing)
Others
flash_frequency_due_to_lightning flash frequency due to lightning s-1=flashes s-1
grid_box_area model grid box area m2

Table 2: Species names

Table 2.1: Chemicals

Gas Species
CF species_name Species Chemical formula Remarks
gases
nitrogen_monoxide Nitrogen monoxide NO
hydrogen_peroxide Hydrogen peroxide H2O2
methane Methane CH4
carbon_monoxide Carbon monoxide CO
nitric_acid Nitric acid HNO3
methyl_hydrogen_peroxide Methyl hydrogen peroxide CH3O2H
formaldehyde Formaldehyde CH2O
peroxyacetyl_nitrate Peroxyacetyl nitrate (PAN) CH3C(O)O2NO2
sulfur_dioxide Sulfur dioxide SO2
dimethyl_sulfide Dimethyl sulfide (DMS) ** CH3SCH3
ammonia Ammonia NH3
ammonium Ammonium NH4
methane_sulfonic_acid Methane sulfonic acid (MSA) CH3SO2OH
hydroperoxy_radical Hydroperoxy radical HO2
methyl_peroxy_radical Methyl peroxy radical CH3O2
hydroxyl_radical Hydroxyl radical (hydroxy radical) OH
nitrogen_dioxide Nitrogen dioxide NO2
nitrate_radical Nitrate radical NO3
dinitrogen_pentoxide Dinitrogen pentoxide N2O5
noy NOy NOy NOy is the sum of all simulated oxidized nitrogen species, out of NO, NO2, HNO3, HNO4, NO3aerosol, NO3(radical), N2O5, PAN, other organic nitrates


nitric_acid Nitric acid HNO3
peroxy_nitric_acid Peroxy nitric acid HNO4
peroxyacetyl_radical Peroxy acetyl radical C2O3
oxygen_radical_in_1D_state Oxygen radical in the 1D (excited) state O(1-D)
ethane ethane C2H6
ethylene ethylene or ethene C2H4
acetylene acetylene C2H2
propane propane C3H8
propene propene C3H6
acetone acetone C3H6O
butane butane C4H10
methyl_glyoxal Methyl glyoxal CH3C(O)C(O)H
isoprene Isoprene, 2-methyl-1,3-butadiene C5H8
lead lead Pb
radon radon Rn
lumped species (modified CBMiv) Species
paraffinic_carbon_bonds paraffinic (alkanic) carbon bonds
olefinic_carbon_bonds olefinic (alkenic) carbon bonds
aldehydes_higher_than_2 acetaldehyde and higher aldehydes,
organic_peroxides lumped higher organic peroxides, ROOH
organic_nitrates lumped alkyl nitrates, organic nitrates, RNO3
secondary_organic_oxy_radical the secondary_organic_oxy_radical, ROR
alkyl_peroxy_radical alkyl peroxy radicals, XO2
intermediate_product_of_isoprene_oxidation XO2N (intermediate product of isoprene oxidation)
families
nox NOx=NO NO2
hox HOx=OH HO2

Table 2.2: Aerosols

Aerosol Species
CF species_name Species Chemical formula Remarks
aerosols
dust_dry_aerosol dry aerosol dust
seasalt_dry_aerosol dry aerosol seasalt
black_carbon_dry_aerosol dry aerosol black carbon BC
hydrophilic_black_carbon_dry_aerosol dry aerosol hydrophilic black carbon BC
hydrophobic_black_carbon_dry_aerosol dry aerosol hydrophobic black carbon BC
organic_carbon_aerosol_from_terpenes_as_particulate_organic_matter_dry_aerosol dry aerosol organic carbon aerosol from terpenes ?
organic_carbon_as_particulate_organic_matter_dry_aerosol dry aerosol organic carbon OM (organic matter)
hydrophilic_organic_carbon_as_particulate_organic_matter_dry_aerosol dry aerosol hydrophilic organic carbon OM (organic matter)
hydrophobic_organic_carbon_as_particulate_organic_matter_dry_aerosol dry aerosol hydrophobic organic carbon OM (organic matter)
sulfate_as_sulfate_dry_aerosol dry aerosol sulfate SO4
nitrate_as_nitrate_dry_aerosol dry aerosol nitrate NO3
ammonium_as_ammonium_dry_aerosol dry aerosol ammonium NH4
ammonium_sulfate_dry_aerosol dry aerosol ammonium sulfate (NH4)2SO4
dry_aerosol dry aerosol total aerosol
aerosol_water water (H2O) associated with aerosol
conversion_factor_OC_POM_aerosol conversion factor organic carbon to particulate organic carbon
pm10_aerosol particles of ambient aerodynamic diameter of 10um or less
pm2p5_aerosol particles of ambient aerodynamic diameter of 2.5um or less
pm1_aerosol particles of ambient aerodynamic diameter of 1um or less
pm0p1_aerosol particles of ambient aerodynamic diameter of 0.1um or less
nucleation_mode_aerosol particles of ambient aerodynamic diamater of 0.01um or less
aitken_mode_aerosol particles of ambient aerodynamic diamater between 0.01 and 0.1um
accumulation_mode_aerosol particles of ambient aerodynamic diamater between 0.1 and 1um
coarse_aerosol particles of ambient aerodynamic diamater between 2.5 and 10um

Table 3: Future names

Table 3.1: Future names for chemicals

Proposed Standard names
CF Standard_name Canonical unit
gas phase species
mole_fraction_of_methane_in_air volume mixing ratio of methane, CH4 1 (mole mole-1)
mole_fraction_of_methyl_hydrogen_peroxide_in_air volume mixing ratio of methyl hydrogen peroxide, CH3O2H 1 (mole mole-1)
mole_fraction_of_dimethyl_sulfide_in_air volume mixing ratio of dimethyl sulfide, DMS, CH3SCH3 1 (mole mole-1)
mole_fraction_of_ammonia_in_air volume mixing ratio of ammonia, NH3 1 (mole mole-1)
mole_fraction_of_ammonium_in_air volume mixing ratio of ammonium, NH4 1 (mole mole-1)
mole_fraction_of_methane_sulfonic_acid_in_air volume mixing ratio of methane sulfonic acid, MSA, CH3SO2OH 1 (mole mole-1)
mole_fraction_of_methyl_peroxy_radical_in_air volume mixing ratio of the methyl peroxy radical, CH3O2 1 (mole mole-1)
mole_fraction_of_nitrate_radical_in_air volume mixing ratio of the nitrate radical, NO3 1 (mole mole-1)
mole_fraction_of_dinitrogen_pentoxide_in_air volume mixing ratio of dinitrogen pentoxide, N2O5 1 (mole mole-1)
mole_fraction_of_peroxy_nitric_acid_in_air volume mixing ratio of peroxy nitric acid, HNO4 1 (mole mole-1)
mole_fraction_of_peroxy_acetyl_radical_in_air volume mixing ratio of the peroxy acetyl radical, C2O3 1 (mole mole-1)
mole_fraction_of_oxygen_radical_in_1D_state_in_air volume mixing ratio of the oxygen radical in the 1D excited state, O(1D) 1 (mole mole-1)
mole_fraction_of_ethane_in_air volume mixing ratio of ethane, C2H6 1 (mole mole-1)
mole_fraction_of_ethene_in_air volume mixing ratio of ethene, C2H4 (aka ethylene) 1 (mole mole-1)
mole_fraction_of_acetylene_in_air volume mixing ratio of acetylene, C2H2 1 (mole mole-1)
mole_fraction_of_propane_in_air volume mixing ratio of propane, C3H8 1 (mole mole-1)
mole_fraction_of_propene_in_air volume mixing ratio of propene, C3H6 1 (mole mole-1)
mole_fraction_of_acetone_in_air volume mixing ratio of acetone, C3H6O 1 (mole mole-1)
mole_fraction_of_butane_in_air volume mixing ratio of butane, C4H10 1 (mole mole-1)
mole_fraction_of_methyl_glyoxal_in_air volume mixing ratio of methyl_glyoxal, CH3COCOH 1 (mole mole-1)
mole_fraction_of_isoprene_in_air volume mixing ratio of isoprene, C5H8 1 (mole mole-1)
derived:
lumped species
mole_fraction_of_paraffinic_carbon_bonds_in_air volume mixing ratio of paraffinic carbon bonds 1 (mole mole-1)
mole_fraction_of_olefinic_carbon_bonds_in_air volume mixing ratio of olefinic carbon bonds 1 (mole mole-1)
mole_fraction_of_aldehydes_higher_than_2_in_air volume mixing ratio of aldehydes with more than one C atom, RCHO 1 (mole mole-1)
mole_fraction_of_organic_peroxides_in_air volume mixing ratio of lumped higher organic peroxides, ROOH 1 (mole mole-1)
mole_fraction_of_organic_nitrates_in_air volume mixing ratio of lumped alkyl nitrates, organic nitrates, RNO3 1 (mole mole-1)
mole_fraction_of_secondary_organic_oxy_radical_in_air volume mixing ratio of the secondary_organic_oxy_radical, ROR 1 (mole mole-1)
mole_fraction_of_alkyl_peroxy_radical_in_air volume mixing ratio of alkyl peroxy radicals, XO2 1 (mole mole-1)
mole_fraction_of_intermediate_product_of_isoprene_oxidation_in_air volume mixing ratio of XO2N (intermediate product of isoprene oxidation) 1 (mole mole-1)
Families
mole_fraction_of_hox_in_air volume mixing ratio of HOx=OH HO2 1 (mole mole-1)
gases: fluxes/productions/emissions
chemical_mole_fraction_destruction_rate_of_sulfur_dioxide chemical destruction rate of SO2 s-1=(mole mole-1 s-1)

Table 3.2: Future names for aerosols

Proposed Standard names
aerosols
mass_concentration_of_sulfate_as_sulfate_dry_aerosol_in_air dry aerosol sulfate aerosol (SO4) kg m-3
mass_concentration_of_nitrate_as_nitrate_dry_aerosol_in_air dry aerosol nitrate aerosol (NO3-) kg m-3
mass_concentration_of_ammonium_sulfate_dry_aerosol_in_air dry ammoniumsulfate aerosol ((NH4)2SO4) kg m-3
mass_concentration_of_seasalt_dry_aerosol_in_air dry seasalt aerosol kg m-3
mass_concentration_of_organic_carbon_from_terpenes_as_particulate_organic_carbon_aerosol_dry_aerosol_in_air dry aerosol from terpenes kg m-3
mass_concentration_of_organic_carbon_as_particulate_organic_carbon_dry_aerosol_in_air dry organic carbon aerosol kg m-3
mass_concentration_of_hydrophilic_organic_carbon_as_particulate_organic_carbon_dry_aerosol_in_air dry hydrophilic organic carbon aerosol kg m-3
mass_concentration_of_hydrophobic_organic_carbon_as_particulate_organic_carbon_dry_aerosol_in_air dry hydrophobic organic carbon aerosol kg m-3
mass_concentration_of_black_carbon_dry_aerosol_in_air dry black carbon aerosol kg m-3
mass_concentration_of_hydrophilic_black_carbon_dry_aerosol_in_air dry hydrophilic black carbon aerosol kg m-3
mass_concentration_of_hydrophobic_black_carbon_dry_aerosol_in_air dry hydrophobic black carbon aerosol kg m-3
mass_concentration_of_dust_dry_aerosol_in_air dry dust aerosol kg m-3
mass_concentration_of_aerosol_water aerosol water kg m-3
aerosols: fluxes/productions/emissions
surface_dry_deposition_mass_flux_of_sulfate_as_sulfate_dry_aerosol dry deposition of dry sulfate at the surface 2D kg m-2 s-1
surface_dry_deposition_mass_flux_of_seasalt_dry_aerosol dry deposition of dry seasalt at the surface 2D kg m-2 s-1
surface_dry_deposition_mass_flux_of_organic_carbon_as_particulate_organic_carbon_dry_aerosol dry deposition of dry organic carbon at the surface 2D kg m-2 s-1
surface_dry_deposition_mass_flux_of_black_carbon_dry_aerosol dry deposition of dry black carbon at the surface 2D kg m-2 s-1
surface_dry_deposition_mass_flux_of_dust_dry_aerosol dry deposition of dry dust at the surface 2D kg m-2 s-1
surface_wet_deposition_mass_flux_of_sulfate_as_sulfate_dry_aerosol wet deposition of dry sulfate at the surface 2D kg m-2 s-1
surface_wet_deposition_mass_flux_of_seasalt_dry_aerosol wet deposition of dry seasalt at the surface 2D kg m-2 s-1
surface_wet_deposition_mass_flux_of_organic_carbon_as_particulate_organic_carbon_dry_aerosol wet deposition of dry organic carbon at the surface 2D kg m-2 s-1
surface_wet_deposition_mass_flux_of_black_carbon_dry_aerosol wet deposition of dry black carbon at the surface 2D kg m-2 s-1
surface_wet_deposition_mass_flux_of_dust_dry_aerosol wet deposition of dry dust at the surface 2D kg m-2 s-1
surface_emission_mass_flux_of_sulfate_as_sulfate_dry_aerosol emission of dry sulfate at the surface 2D kg m-2 s-1
surface_emission_mass_flux_of_seasalt_dry_aerosol emission of dry seasalt at the surface 2D kg m-2 s-1
surface_emission_mass_flux_of_organic_carbon_as_particulate_organic_carbon_dry_aerosol emission of dry organic carbon at the surface 2D kg m-2 s-1
surface_emission_mass_flux_of_black_carbon_dry_aerosol emission of dry black carbon at the surface 2D kg m-2 s-1
surface_emission_mass_flux_of_dust_dry_aerosol emission of dry dust at the surface 2D kg m-2 s-1
atmosphere_emission_mass_flux_of_sulfate_as_sulfate_dry_aerosol emission of dry sulfate in the atmosphere 3D (including chemical production) kg m-3 s-1
atmosphere_emission_mass_flux_of_organic_carbon_as_particulate_organic_carbon_dry_aerosol emission of dry organic carbon in the atmosphere 3D kg m-3 s-1
atmosphere_emission_mass_flux_of_black_carbon_dry_aerosol emission of dry black carbon in the atmosphere 3D kg m-3 s-1
atmosphere_chemical_net_mass_concentration_production_rate_of_sulfate_as_sulfate_dry_aerosol chemical production rate of dry sulfate kg m-3 s-1
optical properties
sulfate_ambient_aerosol_optical_depth_at_XX_nm sulfate aerosol optical depth at XX nm 1
black_carbon_ambient_aerosol_optical_depth_at_XX_nm dry black carbon aerosol optical depth at XX nm 1
organic_carbon_ambient_aerosol_optical_depth_at_XX_nm organic carbon aerosol optical depth at XX nm 1
dust_aerosol_ambient_optical_depth_at_XX_nm dry dust aerosol optical depth at XX nm 1
seasalt_aerosol_ambient_optical_depth_at_XX_nm dry seasalt aerosol optical depth at XX nm 1

UNFINISHED - WORK IN PROGRESS Version update

  • first version 22 May 2006
  • updated 2 June 2006 Christiane Textor
  • updated 8 June 2006 Christiane Textor
  • updated 12 June 2006 Michael Schulz
  • updated 13 June 2006 Christiane Textor
  • updated 30 June 2006 Christiane Textor
  • updated 30 June 2006 Olivier Boucher (Aerosols)
  • updated 3 July 2006 Christiane Textor (Aerosols and name concepts)