CF Standard Names - Discussed Atmospheric Chemistry and Aerosol Terms

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UNFINISHED - WORK IN PROGRESS Version update

• first version 22 May 2006
• updated 2 June 2006
• updated 2 June 2006

comments to ChristianeTextor are highly welcome! see also our discussion

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

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

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

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: Standard Name-Components to be used 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:

• all forcing variables are still missing
• always provide also in_air = atmosphere (as opposed to ocean,soil) info in names?
• how to distinguish ion - radicals, e.g. NO3 ?

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"

Name Components for CF Name Construction
Compartement	explanation	unit	further remark
atmosphere	atmosphere		large-scale properties
in_air	in air		locally measurable
in_sea_water	in sea water
in_troposphere	in troposphere
in_stratosphere	in stratosphere
in_cloudwater	within clouds
Interface or Origin information
from_stratosphere	origin in stratosphere
from_troposphere	origin of tracer in troposphere
at_surface	at surface level
at_tropopause	tropopause level
at_top_of_atmosphere	top of atmosphere level
concentration/mixing ratio/column		unit
column	vertically integrated mass	kg/m2	content=column, should not be used any longer, not self-explaining
mole_fraction	for gases	ppv, 1
mass_concentration	aerosols mass	kg/m3
number_concentration	aerosols number	1/m3
Fluxes		[species-unit/second]
dry_deposition_flux_due_to_turbulence	turbulent dry deposition	different for aerosols and gases
dry_deposition_flux_due_to_sedimentation	seddry deposition	different for aerosols and gases
dry_deposition_flux	dry deposition (dry=turdry+seddry)	different for aerosols and gases
emission_flux	emission	different for aerosols and gases
chemical_gross_production	chemical production	different for aerosols and gases
chemical_loss	chemical destruction	different for aerosols and gases
chemical_net_production	net chemical production	different for aerosols and gases
gases G
emission_flux_of_G_at_surface		kg/m2/s
dry_deposition_flux_of_G_at_surface		1/(m2s)=molecules/(m2s)
wet_deposition_flux_of_G_at_surface		1/(m2s)=molecules/(m2s)
chemical_gross_production_of_G_in_air		1/s=(ppv/s)
chemical_loss_of_G_in_air		1/s=(ppv/s)
chemical_net_production_of_G_in_air		1/s=(ppv/s)
aerosols A
emission_flux_of_A_at_surface		kg/m2/s
dry_deposition_flux_due_to_turbulence_of_A_at_surface		kg/m2/s
dry_deposition_flux_due_to_sedimentation_of_A_at_surface		kg/m2/s
dry_deposition_flux_of_A_at_surface		kg/m2/s
wet_deposition_flux_of_A_at_surface		kg/m2/s
chemical_gross_production_of_A_in_air		kg/m3/s
chemical_loss_of_A_in_air		kg/m3/s
chemical_net_production_of_A_in_air		kg/m3/s
Optical properties / forcing
optical_depth	aerosol optical depth ()	1	equivalent to atmosphere_optical_thickness_due_to_X ?
forcing see CF names	forcing specified per species	W/m2	to be used with species name (X_forcing)

Table 2: Species

Species
CF species_name	Species	Chemical formula	Remarks
gases
nitrogen_oxide	Nitrogen oxide	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
peroxy_acetyl_nitrate	Peroxy acetyl 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
nitric_acid	Nitric acid	HNO3
peroxy_nitric_acid	Peroxy nitric acid	HNO4
peroxy_acetyl_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
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
aerosols			extension _aerosol to distinguish from gases (e.g. NO3) radical in gas phase, from NO3 ion in aerosol
dust_aerosol	dust
seasalt_aerosol	seasalt
black carbon_aerosol	black carbon	BC
hydrophilic_black carbon_aerosol	hydrophilic black carbon	BC
hydrophobic_black carbon_aerosol	hydrophobic black carbon	BC
organic_carbon_aerosol_from_terpenes_as_particulate_organic_matter_aerosol	organic carbon aerosol from terpenes	?
organic_carbon_as_particulate_organic_matter_aerosol	organic carbon	OC
hydrophilic_organic_carbon_as_particulate_organic_matter_aerosol	hydrophilic organic carbon	OC
hydrophobic_organic_carbon_as_particulate_organic_matter_aerosol	hydrophobic organic carbon	OC
sulfate_as_sulfate_aerosol	sulfate	SO4(2-)	what is the cation?
nitrate_as_nitrate_aerosol	nitrate	NO3(-)	what is the cation?
ammonium_as_ammonium_aerosol	ammonium	NH4(+)
ammonium_sulfate_aerosol	ammonium sulfate	(NH4)2SO4	do we need sulfate and ammonium sulfate?
aerosol	total aerosol
aerosol water	aerosol water
conversion_factor_OC_POM_aerosol	conversion factor organic carbon to particulate organic carbon

Table 3: Proposed names

Proposed Standard names
CF Standard_name		Canonical unit
gas phase species
mole_fraction_of_ozone_in_air	volume mixing ratio of ozone, O3	1 (ppv)
mole_fraction_of_nitrogen_oxide_in_air	volume mixing ratio of nitrogen oxide, NO	1 (ppv)
mole_fraction_of_hydrogen_peroxide_in_air	volume mixing ratio of hydrogen peroxide, H2O2	1 (ppv)
mole_fraction_of_methane_in_air	volume mixing ratio of methane, CH4	1 (ppv)
mole_fraction_of_carbon_monoxide_in_air	volume mixing ratio of carbon monoxide, CO	1 (ppv)
mole_fraction_of_nitric_acid_in_air	volume mixing ratio of nitric acid, HNO3	1 (ppv)
mole_fraction_of_methyl_hydrogen_peroxide_in_air	volume mixing ratio of methyl hydrogen peroxide, CH3O2H	1 (ppv)
mole_fraction_of_formaldehyde_in_air	volume mixing ratio of formaldehyde, CH2O	1 (ppv)
mole_fraction_of_peroxy_acetyl_nitrate_in_air	volume mixing ratio of peroxy acetyl nitrate, PAN, CH3COO2NO2	1 (ppv)
mole_fraction_of_sulfur_dioxide_in_air	volume mixing ratio of sulfur dioxide, SO2	1 (ppv)
mole_fraction_of_dimethyl_sulfide_in_air	volume mixing ratio of dimethyl sulfide, DMS, CH3SCH3	1 (ppv)
mole_fraction_of_ammonia_in_air	volume mixing ratio of ammonia, NH3	1 (ppv)
mole_fraction_of_ammonium_in_air	volume mixing ratio of ammonium, NH4	1 (ppv)
mole_fraction_of_methane_sulfonic_acid_in_air	volume mixing ratio of methane sulfonic acid, MSA, CH3SO2OH	1 (ppv)
mole_fraction_of_hydroperoxy_radical_in_air	volume mixing ratio of the hydroperoxy radical, HO2	1 (ppv)
mole_fraction_of_methyl_peroxy_radical_in_air	volume mixing ratio of the methyl peroxy radical, CH3O2	1 (ppv)
mole_fraction_of_hydroxyl_radical_in_air	volume mixing ratio of the hydroxy radical, hydroxyl, OH	1 (ppv)
mole_fraction_of_nitrogen_dioxide_in_air	volume mixing ratio of nitrogen dioxide, NO2	1 (ppv)
mole_fraction_of_nitrate_radical_in_air	volume mixing ratio of the nitrate radical, NO3	1 (ppv)
mole_fraction_of_dinitrogen_pentoxide_in_air	volume mixing ratio of dinitrogen pentoxide, N2O5	1 (ppv)
mole_fraction_of_nitric_acid_in_air	volume mixing ratio of nitric acid, HNO3	1 (ppv)
mole_fraction_of_peroxy_nitric_acid_in_air	volume mixing ratio of peroxy nitric acid, HNO4	1 (ppv)
mole_fraction_of_peroxy_acetyl_radical_in_air	volume mixing ratio of the peroxy acetyl radical, C2O3	1 (ppv)
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 (ppv)
mole_fraction_of_ethane_in_air	volume mixing ratio of ethane, C2H6	1 (ppv)
mole_fraction_of_ethene_in_air	volume mixing ratio of ethene, C2H4 (aka ethylene)	1 (ppv)
mole_fraction_of_acetylene_in_air	volume mixing ratio of acetylene, C2H2	1 (ppv)
mole_fraction_of_propane_in_air	volume mixing ratio of propane, C3H8	1 (ppv)
mole_fraction_of_propene_in_air	volume mixing ratio of propene, C3H6	1 (ppv)
mole_fraction_of_acetone_in_air	volume mixing ratio of acetone, C3H6O	1 (ppv)
mole_fraction_of_butane_in_air	volume mixing ratio of butane, C4H10	1 (ppv)
mole_fraction_of_methyl_glyoxal_in_air	volume mixing ratio of methyl_glyoxal, CH3COCOH	1 (ppv)
mole_fraction_of_isoprene_in_air	volume mixing ratio of isoprene, C5H8	1 (ppv)
derived:
mole_fraction_of_ozone_from_stratosphere_in troposphere	volume mixing ratio of ozone from the stratosphere	1 (ppv)
lumped species
mole_fraction_of_paraffinic_carbon_bonds_in_air	volume mixing ratio of paraffinic carbon bonds	1 (ppv)
mole_fraction_of_olefinic_carbon_bonds_in_air	volume mixing ratio of olefinic carbon bonds	1 (ppv)
mole_fraction_of_aldehydes_higher_than_2_in_air	volume mixing ratio of aldehydes with more than one C atom, RCHO	1 (ppv)
mole_fraction_of_organic_peroxides_in_air	volume mixing ratio of lumped higher organic peroxides, ROOH	1 (ppv)
mole_fraction_of_organic_nitrates_in_air	volume mixing ratio of lumped alkyl nitrates, organic nitrates, RNO3	1 (ppv)
mole_fraction_of_secondary_organic_oxy_radical_in_air	volume mixing ratio of the secondary_organic_oxy_radical, ROR	1 (ppv)
mole_fraction_of_alkyl_peroxy_radical_in_air	volume mixing ratio of alkyl peroxy radicals, XO2	1 (ppv)
mole_fraction_of_intermediate_product_of_isoprene_oxidation_in_air	volume mixing ratio of XO2N (intermediate product of isoprene oxidation)	1 (ppv)
Families
mole_fraction_of_nox_in_air	volume mixing ratio of NOx=NO+NO2	1 (ppv)
mole_fraction_of_hox_in_air	volume mixing ratio of HOx=OH+HO2	1 (ppv)
gases: fluxes/productions/emissions
dry_deposition_flux_due_to_turbulence_of_ozone_at_surface	dry deposition of ozone " | 1/(m2s)= molecules/(m2s)"
wet_deposition_flux_of_nitric_acid_at_surface	wet deposition of nitric acid, HNO3 " | 1/(m2s)= molecules/(m2s)"
chemical_net_production_of_ozone_atmosphere	net chemical production rate of ozone from all reactions (homogeneous+heterogeneous) (production-loss)	1/s=(ppv/s)
chemical_gross_production_of_ozone_in_air	gross chemical production rate of ozone in the gas phase	1/s=(ppv/s)
chemical_loss_of_ozone_in_air	chemical loss rate of ozone due to gas phase reactions	1/s=(ppv/s)
chemical_loss_of_sulfur_dioxide_as_sulfur_dioxide_atmosphere	chemical loss rate of SO2	1/s (kg/s)
aerosols
mass_concentration_of_sulfate_as_sulfate_aerosol_in_air	sulfate aerosol (SO4)	kg/m3
mass_concentration_of_nitrate_as_nitrate_aerosol_in_air	nitrate aerosol (NO3-)	kg/m3
mass_concentration_of_ammonium_sulfate_aerosol_in_air	ammoniumsulfate aerosol ((NH4)2SO4)	kg/m3
mass_concentration_of_seasalt_aerosol_in_air	seasalt aerosol	kg/m3
mass_concentration_of_organic_carbon_aerosol_from_terpenes_as_particulate_organic_carbon_aerosol_in_air	aerosol from terpenes	kg/m3
mass_concentration_of_organic_carbon_as_particulate_organic_carbon_aerosol_in_air	organic carbon aerosol	kg/m3
mass_concentration_of_hydrophilic_organic_carbon_as_particulate_organic_carbon_aerosol_in_air	hydrophilic organic carbon aerosol	kg/m3
mass_concentration_of_hydrophobic_organic_carbon_as_particulate_organic_carbon_aerosol_in_air	hydrophobic organic carbon aerosol	kg/m3
mass_concentration_of_black_carbon_aerosol_in_air	black carbon aerosol	kg/m3
mass_concentration_of_hydrophilic_black_carbon_aerosol_in_air	hydrophilic black carbon aerosol	kg/m3
mass_concentration_of_hydrophobic_black_carbon_aerosol_in_air	hydrophobic black carbon aerosol	kg/m3
mass_concentration_of_dust_aerosol_in_air	dust	kg/m3
mass_concentration_of_aerosol_water	aerosol water	kg/m3
aerosols: fluxes/productions/emissions
dry_deposition_flux_of_sulfate_as_sulfate_aerosol_at_surface	dry deposition of sulfate at the surface 2D	kgS/m2/s
dry_deposition_flux_of_seasalt_at_surface	dry deposition of seasalt at the surface 2D	kg/m2/s
dry_deposition_flux_of_organic_carbon_as_particulate_organic_carbon_aerosol_at_surface	dry deposition of orbanic carbon at the surface 2D	kgC/m2/s
dry_deposition_flux_of_black_carbon_aerosol_at_surface	dry deposition of black carbon at the surface 2D	kgC/m2/s
dry_deposition_flux_of_dust_aerosol_at_surface	dry deposition of dust at the surface 2D	kg/m2/s
wet_deposition_flux_of_sulfate_as_sulfate_aerosol_at_surface	wet deposition of sulfate at the surface 2D	kgS/m2/s
wet_deposition_flux_of_seasalt_aerosol_at_surface	wet deposition of seasalt at the surface 2D	kg/m2/s
wet_deposition_flux_of_orbanic_carbon_as_particulate_organic_carbon_aerosol_at_surface	wet deposition of orbanic carbon at the surface 2D	kgC/m2/s
wet_deposition_flux_of_black_carbon_aerosol_at_surface	wet deposition of black carbon at the surface 2D	kgC/m2/s
wet_deposition_flux_of_dust_aerosol_at_surface	wet deposition of dust at the surface 2D	kg/m2/s
emission_flux_of_sulfate_aerosol_as_sulfate_at_surface	emission of sulfate at the surface 2D	kgS/m2/s
emission_flux_of_seasalt_aerosol_at_surface	emission of seasalt at the surface 2D	kg/m2/s
emission_flux_of_organic_carbon_as_particulate_organic_carbon_aerosol_at_surface	emission of organic carbon at the surface 2D	kgC/m2/s
emission_flux_of_black_carbon_aerosol_at_surface	emission of black carbon at the surface 2D	kgC/m2/s
emission_flux_of_dust_aerosol_at_surface	emission of dust at the surface 2D	kg/m2/s
emission_flux_of_sulfate_as_sulfate_aerosol_atmosphere	emission of sulfate in the atmosphere 3D (including chemical production)	kgS/m3/s
emission_flux_of_organic_carbon_as_particulate_organic_carbon_aerosol_in _the_atmosphere	emission of orbanic carbon in the atmosphere 3D	kgC/m3/s
emission_flux_of_black_carbon_atmosphere	emission of black carbon in the atmosphere 3D	kgC/m3/s
chemical_net_production_of_sulfate_as_sulfate_aerosol_atmosphere	chemical production rate of sulfate	1/s (kg/s)
optical properties
sulfate_aerosol_optical_depth	sulfate aerosol optical depth	1
black_carbon_aerosol_optical_depth	black carbon aerosol optical depth	1
organic_carbon_aerosol_optical_depth	organic carbon aerosol optical depth	1
dust_aerosol_optical_depth	dust aerosol optical depth	1
seasalt_aerosol_optical_depth	seasalt aerosol optical depth	1