Dear Heinke and Jonathan, This is again a comprehensive proposal for chemical names and I would suggest to look at the wiki page I have created in order to see if these name fit into the general concepts. In addition, I would suggest to propose groups of names and not individual names for clarity, and for efficiency, as Heinke has already started to do. I think a lot of the names suggested here could already be more consistent with existing concepts, if there were clearer guidelines, for which you can find a fist draft at: http://wiki.esipfed.org/index.php/CF_Standard_Names_-_Construction_of_Atmospheric_Chemistry_and_Aerosol_Terms
Here are some comments on the proposal - for all aerosol tracers you should add _ambient or _dry > ******************************************** - The problem with athmosphere as a prefix or suffix _in_atmosphere > ******************************************** - atmosphere_number_content_in_air This fits into the group of names physical_quantity_of_X_in_medium Why atmosphere and not _in_air? > ******************************************** - atmosphere_mass_content_of_X_dry_aerosol OR mass_content_of_X_dry_aerosol_in_atmosphere?? > ******************************************** - atmosphere_mass_content_of_water_in_AMBIENT_aerosol > ******************************************** - total_aerosol_ambient_absorption_optical_depth_at_550_nm As stated earlier: the 550nm should be given in the coordinate variable Your TAU_COMP_X corresponds to the existing names, and I agree with 'atmosphere_absorption_optical_thickness_due_to_X_ambient_aerosol' But I thought that optical_thickness=scattering+absorption, i.e. we could also define 'atmosphere_scattering_optical_thickness_due_to_X_ambient_aerosol' and the sum would be 'atmosphere_optical_thickness_due_to_X_ambient_aerosol' I suggest to add a statement in the explanation that the old names represents the sum of the scatt.+absorp. > ******************************************** > > for variables TAU_MODE and ABS_MODE, we should remove atmosphere, because they are 3d, and in each model layer is given the optical depth and is not the integration along the all atmosphere. > I do not understand, what do you mean? In the atmosphere describes the medium where the variable applied, i.e. for example not in the ocean. > ******************************************** - _due_to_impact_and_turbulent_deposition I would summarize the impact under turbulent and just say _turbulent_depostion, because it applies to particles moving in turbulent flow. I agree that turbulent_dep. + sedimentation = dry_dep and would suggest to add this in the explantion of the existing dry_dep names. > ******************************************** - position of expressed as: I agree with the suggested change and move it to the species to which it belongs (as I have suggested before). > this belongs to the sprecies. I like to discuss the new position of _expressed_as > > ******************************************** > > tendency_of_atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol_due_to_emission Why is this needed? We have tendency_of_atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_due_to_emission See http://wiki.esipfed.org/index.php/LIST_OF_CHEMICAL_SPECIES_AND_AEROSOLS > tendency_of_atmosphere_mass_content_of_sulfur_dry_aerosol_due_to_emission_expressed_as_sulfur > kg m-2 s-1 (This is the total emission of Sulfur species > (SO2+SO4+DMS) expressed in kg(S)) > This should be tendency_of_atmosphere_mass_content_of_sulfur_dry_aerosol_expressed_as_sulfur_due_to_emission and can also be H2S and COS? > tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_wet_deposition_expressed_as_sulfur > kg m-2 s-1 This should be tendency_of_atmosphere_mass_content_of_sulfur_dry_aerosol_expressed_as_sulfur_due_to_wet_deposition > ******************************************** > _in_air ******* > > mass_fraction_of_water_in_ambient_aerosol_in_air kg kg-1 Check list of existing names, this exists, do not know about the others. > _in_air_of_atmosphere_layer *************************** I do not understand the sense of these names? why layer? atSurfaceLayer?? Why do you change the unit from kg to ug? > > ******************************************** > > aerosols radiative forcing there is a do we not nead the ambient of dry prefix? in_clear_sky is usually _assuming clear sky, please check existing names, before proposing new ones. it should not be aerosol_radiative_forcing but radiative_forcing_due_to_aerosol to be consistent with other names. I do not think that _total_ is needed, as it is not used in other names that are the sum of different components. existing names are shortwave_forcing, longwave_forcing, or if not short or longwave radiative_forcing, but never short/longwave plus radiative as suggested here. Existing names are constructed like this: toa_instantaneous_longwave_forcing see the list of existing names, please. so for example > toa_shortwave_instantaneous_total_aerosol_radiative_forcing_in_clear_sky toa_instantaneous_shortwave_forcing_due_to_aerosol_assuming_clear_sky please adapt your other names. > ******************************************** > atmosphere_absorption_optical_thickness_due_to_AMBIENT_aerosol > > atmosphere_absorption_optical_thickness_due_to_water_ambient_aerosol this names exists: atmosphere_optical_thickness_due_to_water_in_ambient_aerosol so yours should be consistent. > Do not use optical depth, but optical thickness. There is not exact definition for Aitken, Coarse mode particles, hence I would suggest to avoid these names in CF > ******************************************** > aerosol_asymmetry_parameter_at_atmosphere_layer at_atmosphere_layer? The medium is missing: > > aerosol_asymmetry_parameter > aerosol_refractive_index_imaginary_part > aerosol_refractive_index_imaginary_part_at_atmosphere_layer > aerosol_refractive_index_real_part > aerosol_refractive_index_real_part_at_atmosphere_layer > aerosol_single_scattering_albedo > aerosol_single_scattering_albedo_at_atmosphere_layer > ******************************************** - aerosol optical depth > total_aerosol_ambient_optical_depth this name exists, "ambient" shoud be added to get: atmosphere_optical_thickness_due_to_AMBIENT_aerosol Again, I would avoid acc. mode, coarse mode, etc, these are not clearly defined. Why aerosol_particle and not _aerosol_ ? What is a wet/dry_aerosol_particle_ambient_aerosol? > ******************************************** > aerosol_extinction_cross_section_per_particle cm2 (aerosol > particle)-1 > > aerosol_extinction_cross_section_per_particle_at_atmosphere_layer cm2 (aerosol particle)-1 at_atmospheric_layer? what would this mean? Best regards, Christiane _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
