CF Standard Names - Discussed Atmospheric Chemistry and Aerosol Terms

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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!



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



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
   


Table 3: Proposed names for chemistry and aerosols