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: [email protected] Chilton, Didcot, OX11 0QX, U.K. > -----Original Message----- > From: Frederic MELIN [mailto:[email protected]] > Sent: 08 March 2010 10:39 > To: Pamment, Alison (STFC,RAL,SSTD) > Cc: [email protected]; '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. 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_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: > [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 -- Scanned by iCritical. _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
