Dear Francesca, the accompanying explanations of what the variables represent are perfect, I have nothing to contribute. I also agree with you that: sea_surface_wave_stokes_drift_eastward_velocity sea_surface_wave_stokes_drift_northward_velocity should *not* be aliases for sea_surface_wave_stokes_drift_x_velocity sea_surface_wave_stokes_drift_y_velocity
I am glad the new names will be considered for the next update. I have some more suggestions for new standard names but I will be using the GitHub issues discussion from now on as instructed https://github.com/cf-convention/discuss/issues Thank you very much for your work in maintaining the list. -- Marcelo Andrioni marceloandri...@gmail.com From: Francesca Eggleton - UKRI STFC <francesca.eggle...@stfc.ac.uk> To: "cf-metadata@cgd.ucar.edu" <cf-metadata@cgd.ucar.edu> Subject: [CF-metadata] Suggestion for standard names for bottom current and due to tides and Stokes drift Message-ID: <b1ba4ab901f74a8fa48418a9a4c68...@stfc.ac.uk> Content-Type: text/plain; charset="us-ascii" Dear Marcelo, Thank you for your proposals and apologies for the delay in responding. As you may have seen in Alison's last email, I will be helping out with the maintenance of the standard names. Thank you to Jonathan for comments on these proposals. They all look good and seem to match what already exists. The two phrases which were suggested as aliases, I believe to be new terms and have suggested a reason why so please comment if you agree/disagree. The following text will list each of the proposals, their units and descriptions (constructed from similar terms to be in line with standard name descriptions). Please let me know if there are any comments or further changes to be made. If no comments are made in the next 7 days, these are likely to be accepted in the next update. eastward_sea_water_velocity_at_sea_floor ms-1 A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). The velocity at the sea floor is that adjacent to the ocean bottom, which would be the deepest grid cell in an ocean model. northward_sea_water_velocity_at_sea_floor ms-1 A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). The velocity at the sea floor is that adjacent to the ocean bottom, which would be the deepest grid cell in an ocean model. sea_water_to_direction_at_sea_floor degree The phrase "to_direction" is used in the construction X_to_direction and indicates the direction towards which the velocity vector of X is headed. The direction is a bearing in the usual geographical sense, measured positive clockwise from due north. The direction at the sea floor is that adjacent to the ocean bottom, which would be the deepest grid cell in an ocean model. sea_water_speed_at_sea_floor ms-1 Speed is the magnitude of velocity. The speed at the sea floor is that adjacent to the ocean bottom, which would be the deepest grid cell in an ocean model. eastward_sea_water_velocity_due_to_tides ms-1 A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Due to tides" means due to all astronomical gravity changes which manifest as tides. No distinction is made between different tidal components. northward_sea_water_velocity_due_to_tides ms-1 A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Due to tides" means due to all astronomical gravity changes which manifest as tides. No distinction is made between different tidal components. sea_water_to_direction_due_to_tides degree The phrase "to_direction" is used in the construction X_to_direction and indicates the direction towards which the velocity vector of X is headed. The direction is a bearing in the usual geographical sense, measured positive clockwise from due north. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Due to tides" means due to all astronomical gravity changes which manifest as tides. No distinction is made between different tidal components. sea_water_speed_due_to_tides ms-1 Speed is the magnitude of velocity. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Due to tides" means due to all astronomical gravity changes which manifest as tides. No distinction is made between different tidal components. The following should not be aliases of sea_surface_wave_stokes_drift_x_velocity and sea_surface_wave_stokes_drift_y_velocity, they should be proposed as new terms. The definition states '"x" indicates a vector component along the grid x-axis, positive with increasing x.', this has been done on purpose to allow this term to be used with any type of grid and not limiting it to a lat-lon grid. The term eastward is defined as '"Eastward" indicates a vector component which is positive when directed eastward (negative westward)' which limits this term to being 'zonal' (along a latitudinal circle). sea_surface_wave_stokes_drift_eastward_velocity ms-1 A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). The Stokes drift velocity is the average velocity when following a specific fluid parcel as it travels with the fluid flow. For instance, a particle floating at the free surface of water waves, experiences a net Stokes drift velocity in the direction of wave propagation. sea_surface_wave_stokes_drift_northward_velocity ms-1 A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). The Stokes drift velocity is the average velocity when following a specific fluid parcel as it travels with the fluid flow. For instance, a particle floating at the free surface of water waves, experiences a net Stokes drift velocity in the direction of wave propagation. sea_surface_wave_stokes_drift_to_direction degrees The Stokes drift velocity is the average velocity when following a specific fluid parcel as it travels with the fluid flow. For instance, a particle floating at the free surface of water waves, experiences a net Stokes drift velocity in the direction of wave propagation. The phrase "to_direction" is used in the construction X_to_direction and indicates the direction towards which the velocity vector of X is headed. The direction is a bearing in the usual geographical sense, measured positive clockwise from due north. sea_surface_wave_stokes_drift_speed ms-1 The Stokes drift velocity is the average velocity when following a specific fluid parcel as it travels with the fluid flow. For instance, a particle floating at the free surface of water waves, experiences a net Stokes drift velocity in the direction of wave propagation. Speed is the magnitude of velocity. Thank you, Francesca Eggleton Graduate Environmental Data Scientist Normal Working Hours (Mon-Thurs): 9am-5pm (Fri 4:30pm) RAL Space | R25 | Ext: 6710 Centre for Environmental Data Analysis (CEDA) Science and Technology Facilities Council (STFC) Rutherford Appleton Laboratory | Harwell Campus Didcot | OX11 0QX www.ceda.ac.uk<http://www.ceda.ac.uk/> _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
