[CF-metadata] Standard name table update

alison.pamment at stfc.ac.uk alison.pamment at stfc.ac.uk
Thu Mar 11 05:47:11 MST 2010


Dear All,

The standard name table has been updated as detailed in my previous
posting.  The current version is now version 13, dated 11 March 2010.
While every effort has been made to ensure that the names, units and
definitions are correct, please let me know if you do spot any mistakes
or omissions.

Best wishes,
Alison


> 
> Dear All,
> 
> I am planning to update the standard name table on Tuesday 9th March
to
> add a number of new names and aliases and to
> make other changes that have been agreed in recent weeks. The Standard
> Names Guidelines document will also be updated.
> Please see below for a full list of the planned changes. If anyone
> spots
> any errors in the list please contact
> me as soon as possible.
> 
> Best wishes,
> Alison
> 
> 1. New aliases for existing names
> 
> a. Cloud and precipitation variables for CMIP5.  Proposed by Mark
Webb.
> 
> tendency_of_air_temperature_due_to_large_scale_precipitation will
> become
> tendency_of_air_temperature_due_to_stratiform_precipitation; K s-1
> 
> tendency_of_specific_humidity_due_to_large_scale_precipitation will
> become tendency_of_specific_humidity_due_to_stratiform_precipitation;
> s-1
> 
> b. Clarification of direction for convective mass flux.  Proposed by
> Karl Taylor.
> 
> atmosphere_convective_mass_flux will become
> atmosphere_net_upward_convective_mass_flux; kg m-2 s-1
> 
> c. Spelling and syntax corrections for three names. Reported by
> Jonathan
> Gregory.
> 
> product_of_northward_wind_and_specific_humdity will become
> product_of_northward_wind_and_specific_humidity; m s-1 (adding an
extra
> "i" in humidity).
> 
> moles_per_unit_mass_of_cfc11_in_sea_water will become
> moles_of_cfc11_per_unit_mass_in_sea_water; mol kg-1
> 
> change_over_time_in_atmospheric_water_content_due_to_advection will
> become change_over_time_in_atmosphere_water_content_due_to_advection;
> kg
> m-2
> 
> d. Cloud liquid water names.  Proposed by Jonathan Gregory.
> The phrase "cloud_liquid" will be changed to "cloud_liquid_water" in
> three names.
> 
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_heteroge
neous_nucleation_from_cloud_liquid will become
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_heteroge
neous_nucleation_from_cloud_liquid_water
> 
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_melting_
to_cloud_liquid will become
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_melting_
to_cloud_liquid_water
> 
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_riming_f
rom_cloud_liquid will become
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_riming_f
rom_cloud_liquid_water
> 
> e. Atmosphere optical thickness names.  Arising from a 2008 mailing
list
> thread 'Modification of some existing CF standard names for chemical
constituents'.
> 
> atmosphere_optical_thickness_due_to_aerosol will become
> atmosphere_optical_thickness_due_to_ambient_aerosol
> + defn update
> 
> optical_thickness_of_atmosphere_layer_due_to_aerosol will become
> optical_thickness_of_atmosphere_layer_due_to_ambient_aerosol + defn
update
> 
> 2. New names
> 
> a. Cloud and radiation variables for CMIP5.  Proposed by Mark Webb.
> 
>
tendency_of_mass_fraction_of_stratiform_cloud_liquid_water_in_air_due_to
_convective_detrainment; s-1
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_convecti
ve_detrainment; s-1
> tendency_of_air_temperature_due_to_model_physics; K s-1
> tendency_of_air_temperature_due_to_convection; K s-1
> atmosphere_updraft_convective_mass_flux; kg m-2 s-1
> atmosphere_downdraft_convective_mass_flux; kg m-2 s-1
> atmosphere_net_upward_shallow_convective_mass_flux; kg m-2 s-1
> atmosphere_net_upward_deep_convective_mass_flux; kg m-2 s-1
>
tendency_of_air_temperature_due_to_stratiform_cloud_and_precipitation_an
d_boundary_layer_mixing; K s-1
>
tendency_of_specific_humidity_due_to_stratiform_cloud_and_precipitation_
and_boundary_layer_mixing; K s-1
> upwelling_longwave_flux_in_air_assuming_clear_sky; W m-2
> upwelling_shortwave_flux_in_air_assuming_clear_sky; W m-2
> downwelling_longwave_flux_in_air_assuming_clear_sky; W m-2
> downwelling_shortwave_flux_in_air_assuming_clear_sky; W m-2
> 
> b. Satellite ice-drift names.  Proposed by Thomas Lavergne.
> 
> eastward_sea_ice_displacement; m
> northward_sea_ice_displacement; m
> sea_ice_x_displacement; m
> sea_ice_y_displacement; m
> sea_ice_displacement; m
> direction_of_sea_ice_displacement; degrees
> 
> c. Climate indexes, resulting from acceptance of trac ticket 33
> proposed
> by Heinke Hock.
> 
> number_of_days_with_air_temperature_below_threshold
> number_of_days_with_air_temperature_above_threshold
>
number_of_days_with_lwe_thickness_of_precipitation_amount_above_threshol
d
> number_of_days_with_wind_speed_above_threshold
> 
> spell_length_of_days_with_air_temperature_below_threshold
> spell_length_of_days_with_air_temperature_above_threshold
>
spell_length_of_days_with_lwe_thickness_of_precipitation_amount_above_th
reshold
>
spell_length_of_days_with_lwe_thickness_of_precipitation_amount_below_th
reshold
> 
> d. Peak wave period name.  Proposed by Jennifer Brown.
> 
> sea_surface_wave_period_at_variance_spectral_density_maximum; s
> 
> e. Sea water transparency and reflectance names. Proposed by Olivier
> Lauret.
> 
> secchi_depth_of_sea_water; m
>
surface_ratio_of_upwelling_radiance_emerging_from_sea_water_to_downwelli
ng_radiative_flux_in_air; sr^-1
> angle_of_incidence; degree
> angle_of_emergence; degree
> 
> f. Sea water velocity names.  Proposed by Stephane Tarot.
> 
> radial_sea_water_velocity_away_from_instrument; m s-1
> direction_of_radial_vector_away_from_instrument; degree
> eastward_sea_water_velocity_assuming_no_tide; m s-1
> northward_sea_water_velocity_assuming_no_tide; m s-1
> 
> g. Water column name. Proposed by Jeff deLaBeaujardiere.
> 
> sea_floor_depth_below_sea_surface; m
> 
> h. Aerosol optical thickness names. Proposed by Heinke Hoeck.
> 
> atmosphere_absorption_optical_thickness_due_to_ambient_aerosol; 1
> atmosphere_absorption_optical_thickness_due_to_dust_ambient_aerosol; 1
>
atmosphere_absorption_optical_thickness_due_to_particulate_organic_matte
r_ambient_aerosol; 1
>
atmosphere_absorption_optical_thickness_due_to_sulfate_ambient_aerosol;
1
>
atmosphere_absorption_optical_thickness_due_to_seasalt_ambient_aerosol;
1
>
atmosphere_absorption_optical_thickness_due_to_black_carbon_ambient_aero
sol; 1
> 
> 3. Modification to definition of land_ice names following discussion
in
> mailing list thread "Standard names for Glaciology and ice-sheet
> modeling:land_ice, sea_ice, floating_ice, ice shelves..."
> (http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2009/002733.html
and
> following).
> 
> This change affects the following 17 names:
> 
> land_ice_area_fraction
> land_ice_basal_melt_rate
> land_ice_basal_x_velocity
> land_ice_basal_y_velocity
> land_ice_calving_rate
> land_ice_lwe_basal_melt_rate
> land_ice_lwe_calving_rate
> land_ice_lwe_surface_specific_mass_balance
> land_ice_sigma_coordinate
> land_ice_surface_specific_mass_balance
> land_ice_temperature
> land_ice_thickness
> land_ice_vertical_mean_x_velocity
> land_ice_vertical_mean_y_velocity
> land_ice_x_velocity
> land_ice_y_velocity
> tendency_of_land_ice_thickness.
> 
> In the definitions, the sentence reading ' "Land ice" means glaciers,
> ice-caps and ice-sheets resting on bedrock' will be extended to read '
> "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock
> and also includes ice-shelves.'
> 
> 4. Other changes to the standard name table.
> 
> a. Remove duplicate entry for
> sea_surface_height_above_reference_ellipsoid. Reported by Heinke Hoeck
> and Phil Bentley.
> 
> 5. Modifications to the Standard Name Guidelines document resulting
> from
> the acceptance of trac ticket 33.
> 
> The following wording will be added to the 'Transformations' section
of
> the document.
> 
> A variable whose standard name has the form
> number_of_days_with_X_below|above_threshold must have a coordinate
> variable or scalar coordinate variable with the a standard name of X
to
> supply the threshold(s). It must have a climatological time variable,
> and a cell_methods entry for within days which describes the
processing
> of quantity X before the threshold is applied. A number_of_days is an
> extensive quantity in time, and the cell_methods entry for over days
> should be sum.
> 
> A variable whose standard name has the form
> spell_length_of_days_with_X_below|above_threshold must have a
> coordinate
> variable or scalar coordinate variable with the a standard name of X
to
> supply the threshold(s). It must have a climatological time variable,
> and a cell_method entry for within days which describes the processing
> of quantity X before the threshold is applied. A spell_length_of_days
> is
> an intensive quantity in time, and the cell_methods entry for over
days
> can be any of the methods listed in Appendix E appropriate for
> intensive
> quantities e.g. maximum, minimum or mean.
> 


------
Alison Pamment                          Tel: +44 1235 778065
NCAS/British Atmospheric Data Centre    Fax: +44 1235 446314
Rutherford Appleton Laboratory          Email:alison.pamment at stfc.ac.uk
Chilton, Didcot, OX11 0QX, U.K.


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