Dear Jonathan, my suggestion of sea_water_from_direction_at_sea_floor was based on the "basic" standard name: sea_water_from_direction The phrase "from_direction" is used in the construction X_from_direction and indicates the direction from which the velocity vector of X is coming. The direction is a bearing in the usual geographical sense, measured positive clockwise from due north.
so that the only difference would be to add the suffix _at_sea_floor like it was done with: sea_water_potential_temperature sea_water_potential_temperature_at_sea_floor Thank you. Em ter., 12 de nov. de 2019 às 16:22, <[email protected]> escreveu: > > Send CF-metadata mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of CF-metadata digest..." > > > Today's Topics: > > 1. Suggestion for standard names for bottom current and due to > tides and Stokes drift (Jonathan Gregory) > 2. Re: Suggestion for standard names for bottom current and due > to tides and Stokes drift (Marcelo Andrioni) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 11 Nov 2019 18:00:27 +0000 > From: Jonathan Gregory <[email protected]> > To: "[email protected]" <[email protected]> > Subject: [CF-metadata] Suggestion for standard names for bottom > current and due to tides and Stokes drift > Message-ID: <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > Dear Francesca and Marcelo > > I think that "velocity" ought to appear in this one: > > sea_water_to_direction_at_sea_floor > It's the velocity which has a direction. > > Best wishes > > Jonathan > > ----- Forwarded message from Francesca Eggleton - UKRI STFC > <[email protected]> ----- > > > Date: Mon, 11 Nov 2019 17:29:31 +0000 > > From: Francesca Eggleton - UKRI STFC <[email protected]> > > To: "[email protected]" <[email protected]> > > Subject: [CF-metadata] Suggestion for standard names for bottom current and > > due to tides and Stokes drift > > > > 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/> > > > > > > [cid:[email protected]][cid:[email protected]] > > > > P Please consider the environment before printing this e-mail > > > > > > > > Dear Marcelo > > > > > > > > These look fine to me, thanks. Just to be clear - you're *not* proposing > > > > at_bottom, are you? I agree with you that at_sea_floor would be the right > > > > phrase to use. > > > > > > > > Best wishes > > > > > > > > Jonathan > > > > > > > > > > > > Hello, > > > > > > > > I would like to suggest the inclusion of standard names for u, v, > > > > speed and direction for bottom current and due to tides and Stokes > > > > drift: > > > > > > > > An example of model output with bottom velocity is the HYCOM NCODA forecast: > > > > https://tds.hycom.org/thredds/catalog/GLBv0.08/expt_93.0/data/forecasts/runs/catalog.html?dataset=GLBv0.08/expt_93.0/data/forecasts/runs/FMRC_RUN_2019-10-13T12:00:00Z > > > > water_u_bottom (m/s) = Eastward Water Velocity = > > > > eastward_sea_water_velocity_at_bottom > > > > water_v_bottom (m/s) = Northward Water Velocity = > > > > northward_sea_water_velocity_at_bottom > > > > > > > > based on existing variables: > > > > sea_water_potential_temperature_at_sea_floor > > > > sea_water_temperature_at_sea_floor > > > > sea_water_salinity_at_sea_floor > > > > sea_water_pressure_at_sea_floor > > > > > > > > my suggestion would be: > > > > eastward_sea_water_velocity_at_sea_floor > > > > northward_sea_water_velocity_at_sea_floor > > > > sea_water_to_direction_at_sea_floor > > > > sea_water_speed_at_sea_floor > > > > > > > > An example of model output with currents due to tides and Stokes drift > > > > is the Mercator Forecast: > > > > http://marine.copernicus.eu/services-portfolio/access-to-products/?option=com_csw&view=details&product_id=GLOBAL_ANALYSIS_FORECAST_PHY_001_024 > > > > > > > > based on existing variables: > > > > eastward_sea_water_velocity_assuming_no_tide > > > > northward_sea_water_velocity_assuming_no_tide > > > > ocean_vertical_momentum_diffusivity_due_to_tides > > > > ocean_vertical_tracer_diffusivity_due_to_tides > > > > > > > > my suggestion would be: > > > > eastward_sea_water_velocity_due_to_tides > > > > northward_sea_water_velocity_due_to_tides > > > > sea_water_to_direction_due_to_tides > > > > sea_water_speed_due_to_tides > > > > > > > > Stokes drift is present in the current CF table with: > > > > sea_surface_wave_stokes_drift_x_velocity > > > > sea_surface_wave_stokes_drift_y_velocity > > > > I think it could help to add > > > > sea_surface_wave_stokes_drift_eastward_velocity > > > > sea_surface_wave_stokes_drift_northward_velocity > > > > as aliases to make it clear it is zonal and meridional currents, and > > > > not just along the grid X and Y dimensions. > > > > > > > > Thank you very much. > > > > -- > > > > Marcelo Andrioni > > > > marceloandrioni at > > gmail.com<http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata> > > > > > > > > _______________________________________________ > > CF-metadata mailing list > > [email protected] > > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > > ----- End forwarded message ----- > > > ------------------------------ > > Message: 2 > Date: Tue, 12 Nov 2019 16:21:43 -0300 > From: Marcelo Andrioni <[email protected]> > To: [email protected], [email protected] > Subject: Re: [CF-metadata] Suggestion for standard names for bottom > current and due to tides and Stokes drift > Message-ID: > <CAECDRdfO-7adUp8XpBWXXEZse49KMtvAFY=f8noi8thqa68...@mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > 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 > [email protected] > > > From: Francesca Eggleton - UKRI STFC <[email protected]> > To: "[email protected]" <[email protected]> > Subject: [CF-metadata] Suggestion for standard names for bottom > current and due to tides and Stokes drift > Message-ID: <[email protected]> > 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/> > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > > ------------------------------ > > End of CF-metadata Digest, Vol 199, Issue 3 > ******************************************* -- Marcelo Andrioni [email protected] _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
