Dear Frederic,
Thank you for checking the list and pointing out this clarification. I will amend the name to include 'surface' as you suggest.
Best wishes,
Alison
------
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.
> -----Original Message-----
> From: Frederic MELIN [mailto:frederic.melin at jrc.ec.europa.eu]
> Sent: 08 March 2010 10:39
> To: Pamment, Alison (STFC,RAL,SSTD)
> Cc: cf-metadata at cgd.ucar.edu; 'olivier lauret'
> Subject: RE: [CF-metadata] Standard name table update :
>
> Dear Alison,
>
> I've participated in the definition of:
>
> ratio_of_upwelling_radiance_emerging_from_sea_water_to_downwelling_radi
> ative
> _flux_in_air
>
> to indicate the so-called remote-sensing reflectance, that more
> specifically
> is the ratio of:
> surface_upwelling_spectral_radiance_in_air_emerging_from_sea_water
> and
> surface_downwelling_spectral_radiative_flux_in_air
>
> I've realized that the term 'surface' has been dropped off in this
> operation. As far as I am aware, the only context where this quantity
> is
> used is to describe its surface value (associated with a remote sensing
> context).
> I think it would be appropriate to add "surface_" in front for
> completeness:
>
>
> surface_ratio_of_upwelling_radiance_emerging_from_sea_water_to_downwell
> ing_r
> adiative_flux_in_air
>
> I 'm sorry for the lateness of this input.
> Best regards,
> F. M?lin
>
> -----Original Message-----
> From: cf-metadata-bounces at cgd.ucar.edu
> [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf Of
> alison.pamment at stfc.ac.uk
> Sent: Friday, 05 March, 2010 14:11
> To: cf-metadata at cgd.ucar.edu
> Subject: [CF-metadata] Standard name table update
>
> 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_heterog
> e
> neous_nucleation_from_cloud_liquid will become
> tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_heterog
> e
> 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_t
> o
> _convective_detrainment; s-1
> tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_convect
> i
> 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_a
> n
> 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_thresho
> l
> 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_t
> h
> reshold
> spell_length_of_days_with_lwe_thickness_of_precipitation_amount_below_t
> h
> 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
> ratio_of_upwelling_radiance_emerging_from_sea_water_to_downwelling_radi
> a
> tive_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_matt
> e
> 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_aer
> o
> 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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Received on Mon Mar 08 2010 - 05:40:48 GMT
