Dear all,
I like to propose cf-standard names for the echam5-hammoz model
(aerosol-chemistry-climate):
http://cera-www.dkrz.de/WDCC/ui/Reference.jsp?acronym=EH5_HZ_T42L31_ERA40_25Y&typeid=2&citaid=2003136
http://cera-www.dkrz.de/WDCC/ui/Reference.jsp?acronym=EH5_HZ_T42L31_ERA40_25Y&typeid=2&citaid=2003137
Luca Pozzoli gave me a lot of help to make this proposal.
For discussion he will assist us.
atmosphere_cloud_droplet_number_content
1 m-2
atmosphere_ice_crystal_number_content
1 m-2
atmosphere_aerosol_particle_number_content
1 m-2
New physical parameter would be:
atmosphere_number_content_of_X or atmosphere_X_number_content ?
atmosphere_mass_content_of_black_carbon_dry_aerosol
kg m-2
atmosphere_mass_content_of_dust_dry_aerosol
kg m-2
atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol
kg m-2
atmosphere_mass_content_of_sulfate_dry_aerosol_expressed_as_sulfur
kg m-2
atmosphere_mass_content_of_seasalt_dry_aerosol
kg m-2
atmosphere_mass_content_of_water_in_aerosol
kg m-2
This is only water associated to aerosols
I like to discuss the following processes:
_due_to_sedimentation
_due_to_impact_and_turbulent_depositiontotal_aerosol_ambient_absorption_optical_depth_at_550_nm
absorption optical depth is the optical depth multiplied by the
co-single scattering albedo (1-single scattering albedo).
So there are 2 kinds of variables in the rad file:
1) variables with TAU are optical depth
2) variables with ABS are absorption optical depth
In the book of Seinfeld and Pandis I found that optical thickness is the
integration for a finite path (between x1 and x2 in the atmosphere) and
optical depth is when x is measured vertically in the atmosphere.
So I think we can stick to what already exist in CF tables and use for
example:
'atmosphere_optical_thickness_due_to_black_carbon_ambient_aerosol_at_550_nm'
for TAU_COMP_BC
and
'atmosphere_absorption_optical_thickness_due_to_black_carbon_ambient_aerosol_at_550_nm'
for ABS_COMP_BC
and specify in the explanation that absorption optical thickness is
defined as the product of optical thickness and the co-single
scattering albedo.
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.
The variables with _due_to_impact_and_turbulent_deposition are the
deposition only from transport
processes (impact+turbulent dep.), while variables with
_due_to_sedimentation are the
deposition by gravitational settling only. The sum can be called
_due_to_dry_deposition
following the CF definition.
impact scavenging is itself a process that leads to removal of particles
or gas molecules by impact on an obstacle encountered during transport.
>From Seinfeld and Pandis, Atmospehric Chemistry and Physics, pag 959:
"Particle removal can actually occur within the quasi-laminar sublayer
by interception, when particles moving with the mean air motion pass
sufficiently close to an obstacle to collide with it. Particle
deposition by impaction may also occur when particles cannot follow
rapid changes of direction of the mean flow, and their inertia carries
them across the sublayer to the surface."
We need the following standard names for hammoz:
_due_to_dry_deposition
**********************
tendency_of_atmosphere_content_of_aerosol_particle_number_due_to_dry_deposition
1 m-2 s-1
tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_dry_deposition_expressed_as_sulfur
kg m-2 s-1
I would like to change the position of _expressed_as_sulfur. This is the
convention but I think
this belongs to the sprecies. I like to discuss the new position of
_expressed_as
tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_expressed_as_sulfur_due_to_dry_deposition
_due_to_emission
****************
tendency_of_atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol_due_to_emission
kg m-2 s-1
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))
_due_to_sedimentation
**********************
tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_sedimentation
kg m-2 s-1
tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_sedimentation
kg m-2 s-1
tendency_of_atmosphere_content_of_aerosol_particle_number_due_to_sedimentation
1 m-2 s-1
tendency_of_atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol_due_to_sedimentation
kg m-2 s-1
tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_sedimentation_expressed_as_sulfur
kg m-2 s-1
tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_sedimentation
kg m-2 s-1
_due_to_wet_deposition
**********************
tendency_of_atmosphere_content_of_aerosol_particle_number_due_to_wet_deposition
1 m-2 s-1
tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_wet_deposition_expressed_as_sulfur
kg m-2 s-1
_due_to_impact_and_turbulent_deposition
***************************************
tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_impact_and_turbulent_deposition
kg m-2 s-1
tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_impact_and_turbulent_deposition
kg m-2 s-1
tendency_of_atmosphere_content_of_aerosol_particle_number_due_to_impact_and_turbulent_deposition
1 m-2 s-1
tendency_of_atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol_due_to_impact_and_turbulent_deposition
kg m-2 s-1
tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_impact_and_turbulent_deposition_expressed_as_sulfur
kg m-2 s-1
tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_impact_and_turbulent_deposition
kg m-2 s-1
_in_air
*******
mass_fraction_of_water_in_ambient_aerosol_in_air
kg kg-1
mass_fraction_of_formaldehyde_in_air
kg kg-1
mass_fraction_of_methyl_hydroperoxide_in_air
kg kg-1
mass_fraction_of_carbon_monoxide_in_air
kg kg-1
mass_fraction_of_hydrogen_peroxide_in_air
kg kg-1
mass_fraction_of_sulfuric_acid_in_air
kg kg-1
mass_fraction_of_nitric_acid_in_air
kg kg-1
mass_fraction_of_hydroperoxyl_in_air
kg kg-1
mass_fraction_of_dinitrogen_pentoxide_in_air
kg kg-1
mass_fraction_of_nitrogen_monoxide_in_air
kg kg-1
mass_fraction_of_nitrogen_dioxide_in_air
kg kg-1
mass_fraction_of_hydroxide_in_air
kg kg-1
_in_air_of_atmosphere_layer
***************************
mass_fraction_of_ozone_in_air_of_atmosphere_layer
kg kg-1
mass_fraction_of_nitrogen_dioxide_in_air_of_atmosphere_layer
kg kg-1
mass_fraction_of_nitrogen_monoxide_in_air_of_atmosphere_layer
kg kg-1
mass_fraction_of_carbon_monoxide_in_air_of_atmosphere_layer
kg kg-1
mass_fraction_of_sulfur_dioxide_in_air_of_atmosphere_layer
kg kg-1
mass_concentration_of_pm2p5_in_air_of_atmosphere_layer
ug m-3
mass_concentration_of_pm1_in_air_of_atmosphere_layer
ug m-3
mass_concentration_of_sulfate_dry_aerosol_of_atmosphere_layer-atSurfaceLayer
ug m-3
mass_concentration_of_dust_dry_aerosol_of_atmosphere_layer-atSurfaceLayer
ug m-3
mass_concentration_of_seasalt_dry_aerosol_of_atmosphere_layer-atSurfaceLayer
ug m-3
mass_concentration_of_black_carbon_dry_aerosol_of_atmosphere_layer-atSurfaceLayer
ug m-3
mass_concentration_of_particulate_organic_matter_dry_aerosol_of_atmosphere_layer-atSurfaceLayer
ug m-3
forcing
**********
In general radiative forcing is defined as the difference in the
top-of-the-atmosphere radiation in an interval of time (for example
between 2000 and pre-industrial times) due to the changes in this period
of a forcing agent, which is aerosol in this case (another agent for
example is CO2, and all other GHGs). 'Instantaneous' means that is the
perturbation of the radiative flux due to the presence of aerosols in a
specific time (is not the difference between an interval of time).
'Total' is related to the fact that aerosols have different effects on
the radiation, direct effect, semi-direct, and indirect. Total is the
sum of these 3 effects.
toa_shortwave_instantaneous_total_aerosol_radiative_forcing_in_clear_sky
W m-2
toa_shortwave_instantaneous_total_aerosol_radiative_forcing
W m-2
surface_shortwave_instantaneous_total_aerosol_radiative_forcing_in_clear_sky
W m-2
surface_shortwave_instantaneous_total_aerosol_radiative_forcing
W m-2
toa_longwave_instantaneous_total_aerosol_radiative_forcing_in_clear_sky
W m-2
toa_longwave_instantaneous_total_aerosol_radiative_forcing
W m-2
surface_longwave_instantaneous_total_aerosol_radiative_forcing_in_clear_sky
W m-2
surface_longwave_instantaneous_total_aerosol_radiative_forcing
W m-2
rad the units are dimensionless
***
absorption optical depth is the optical depth multiplied by the
co-single scattering albedo (1-single scattering albedo).
atmosphere_absorption_optical_thickness_due_to_aerosol
atmosphere_absorption_optical_thickness_due_to_dust_ambient_aerosol
atmosphere_absorption_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol
atmosphere_absorption_optical_thickness_due_to_sulfate_ambient_aerosol
atmosphere_absorption_optical_thickness_due_to_seasalt_ambient_aerosol
atmosphere_absorption_optical_thickness_due_to_water_ambient_aerosol
atmosphere_absorption_optical_thickness_due_to_black_carbon_ambient_aerosol
coarse_mode_dry_aerosol_particle_ambient_absorption_optical_depth
coarse_mode_wet_aerosol_particle_ambient_absorption_optical_depth
aitken_mode_dry_aerosol_particle_ambient_absorption_optical_depth
aitken_mode_wet_aerosol_particle_ambient_absorption_optical_depth
aerosol_asymmetry_parameter_at_atmosphere_layer
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
total_aerosol_ambient_optical_depth
atmosphere_optical_thickness_due_to_sulfate_ambient_aerosol
accumulation_mode_dry_aerosol_particle_ambient_optical_depth
accumulation_mode_wet_aerosol_particle_ambient_optical_depth
coarse_mode_dry_aerosol_particle_ambient_optical_depth
coarse_mode_wet_aerosol_particle_ambient_optical_depth
aitken_mode_dry_aerosol_particle_ambient_optical_depth
aitken_mode_wet_aerosol_particle_ambient_optical_depth
accumulation_mode_dry_aerosol_particle_ambient_absorption_optical_depth
accumulation_mode_wet_aerosol_particle_ambient_absorption_optical_depth
********************************************
aerosol_extinction_cross_section_per_particle
cm2 (aerosol particle)-1
aerosol_extinction_cross_section_per_particle_at_atmosphere_layer
cm2 (aerosol particle)-1
Best wishes
Heinke
Received on Fri Nov 07 2008 - 02:41:00 GMT
