CF Standard Names - Discussed Atmospheric Chemistry and Aerosol Terms

What links here: CF Standard Names - Discussed Atmospheric Chemistry and Aerosol Terms

UNFINISHED - WORK IN PROGRESS 19 May 2006

but comments to ChristianeTextor are highly welcome!

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• Table 1: Concept of construction of new names
• Table 2: Species
• Table 3: Proposed names for chemistry and aerosols

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Table 1: Concept of construction of new names

Table 1 provides the basic ideas of a concept for the construction of standard_names for aerosols and chemistry. The ideas in table 1 are mainly based on the PRISM project (Peter van Velthoven) see PRISM Standard Name Tables, latest Version, V 1.3

Remarks

• what is the difference between atmosphere and in_air? should be in_air only to distinguish from in_cloud etc.
• allways give atmosphere/ocean/soil?
• articles and prepositions should be avoided
• try to use SI units (e.g. not hours but seconds)
• how to distinguish ion - radicals, e.g. NO3 ?
• there is for some variable both mass_fraction and mole_fraction, I think we should take mole_fraction for gases and mass_fraction for aerosols, but only one at a time
• for sulfur and carbon aerosols the units should be in mass(S) and mass(C), respectively
• for column mass, the name 'content' is used, it should be changed to column
• what is equivalent_thicknss_at_stp_of_atmosphere_ozone_content?

• Should we also suggest names for variables and files?
• all forcing variables are still missing

Construction	PRISM proposals in black, new suggestions in blue
Compartement	proposed CF name	unit	remark
atmosphere	atmosphere		why "in air" but also "atmosphere", e.g. "mass_concentration_of_sulfate_aerosol_in_air" and atmosphere_sulfate_content? atmosphere could be used to distinguish from "sea" or "ice", and "in air" to distinguish "in cloud/on aerosol"
in air	in_air
in sea water	in_sea_water
in troposphere	in_troposphere
in stratosphere	in_stratosphere
within clouds	in_cloudwater		PRISM in_cloudy_air
Spatial information
from stratosphere	from_the_stratosphere		changed from PRISM proposal
tropospheric column	tropospheric_column
at surface	at_surface
surface	surface		add atmosphere/sea?
concentration/mixing ratio/column	CF standard name	unit
column load	column		add atmosphere/sea?
content	content=column, nshould not be used any longer, not self-explaining
gases	mole_fraction_of_X_compartment	ppv, 1
aerosols mass	mass_concentration_of_X_compartment	kg/m3 for sulfur species all in [mass S], for organic and black carbon all in [mass C]
aerosols number	number_concentration_of_X_compartment	1/m3
Fluxes		[species-unit/second]
turbulent dry deposition	turdry_deposition_flux	different for aerosols and gases, see below	add atmosphere/sea?
seddry deposition	seddry_deposition_flux	different for aerosols and gases, see below	add atmosphere/sea?
dry deposition (dry=turdry+seddry)	dry_deposition_flux	different for aerosols and gases, see below	add atmosphere/sea?
emission	emission_flux	different for aerosols and gases, see below	add atmosphere/sea?
chemical production	chemical_production	different for aerosols and gases, see below	add atmosphere/sea? add _rate ?
chemical destruction	chemical_destruction	different for aerosols and gases, see below	add atmosphere/sea? add _rate ?
net chemical production	net_X_production	different for aerosols and gases, see below	add atmosphere/sea? add _rate ?
gases G
	dry_deposition_flux_of_G_at_surface	1/(m2s)=molecules/(m2s)
	wet_deposition_flux_of_G_at_surface	1/(m2s)=molecules/(m2s)
	chemical_production_of_G_in_air	1/s=(ppv/s)
	chemical_loss_of_G_in_air	1/s=(ppv/s)
	net_G_production_atmosphere	1/s=(ppv/s)
aerosols A
	turdry_deposition_flux_of_A_at_surface	kg/m2/s
	seddry_deposition_flux_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_production_of_A_in_air	kg/m3/s
	chemical_loss_of_A_in_air	kg/m3/s
optical properties / forcing
aerosol optical depth (X_aerosol)	atmosphere_X_optical_depth  X_optical_depth optical_depth_due_to_X	1	atmosphere_optical_thickness_due_to_X CF def!: 1) very long name, 2) does not fit with cloud_optical_depth, 3) is there any opt. depth not in the atmosphere?

Table 2: Species

media:Test.xls

PRISM proposals in black, new suggestions in blue
CF species_name	Species	Chemical formula	Remarks
gases
carbon_dioxide alias co2	Carbon dioxide *	CO2	* already defined in CF
ozone  alias: o3	Ozone	O3	** used both in the atmosphere and the ocean (O3, DMS)
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 carbon bonds		alkanic carbon bonds
olefinic_carbon_bonds	olefinic carbon bonds		alkenic carbon bonds
aldehydes_higher_than_2	acetaldehyde and higher aldehydes,
	aldehydes with more than one C atom, RCHO
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 _aerosol	organic_carbon_aerosol_from_terpenes	?	organic_carbon_from_terpenes (aerosol is a compartment)
organic_carbon_aerosol	organic_carbon	OC
hydrophilic_organic_carbon_aerosol	hydrophilic_organic_carbon	OC
hydrophobic_organic_carbon_aerosol	hydrophobic_organic_carbon	OC
sulfate_aerosol	sulfate	SO4(2-)	what is the cation?
nitrate_aerosol	nitrate	NO3(-)	what is the cation?
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