Dear Alison, I've participated in the definition of:
ratio_of_upwelling_radiance_emerging_from_sea_water_to_downwelling_radiative _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_downwelling_r adiative_flux_in_air I 'm sorry for the lateness of this input. Best regards, F. Mélin -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, 05 March, 2010 14:11 To: [email protected] 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_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 ratio_of_upwelling_radiance_emerging_from_sea_water_to_downwelling_radia 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_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: [email protected] Chilton, Didcot, OX11 0QX, U.K. -- Scanned by iCritical. _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
