proposal to add three new concepts related to seabed stress (version 2)

[bricheno]

Proposer Lucy Bricheno (NOC MSM)
follow-on from issue #241
sea_floor_horizontal_stress
sea_floor_horizontal_stress_due_to_sea_surface_waves
sea_floor_horizontal_stress_due_to_model_sea_water_velocity

• Term sea_floor_horizontal_stress

• Description Ocean processes such as waves and currents can generate forces (or stress) on the sea floor. The surface called "sea floor" means the lower boundary of the ocean. "Stress" means the shear stress (force per unit area) exerted at the sea floor.

• Units N m-2.

• Term sea_floor_horizontal_stress_due_to_sea_surface_waves

• Description Ocean processes such as waves and currents can generate forces (or stress) on the sea floor. The surface called "sea floor" means the lower boundary of the ocean. "Stress" means the shear stress (force per unit area) exerted at the sea floor. 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. The phrase "sea_surface_waves" means the stress associated with sea surface waves dissipation processes through bottom friction.

• Units N m-2.

• Term sea_floor_horizontal_stress_due_to_model_sea_water_velocity

• Description Ocean processes such as waves and currents can generate forces (or stress) on the sea floor. The surface called "sea floor" means the lower boundary of the ocean. "Stress" means the shear stress (force per unit area) exerted at the sea floor. 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. The phrase "model_sea_water_velocity" means the stress associated with ocean current dissipation processes through bottom friction.

• Units N m-2.

[github-actions]

Thank you for your proposal. These terms will be added to the cfeditor (http://cfeditor.ceda.ac.uk/proposals/1) shortly. Your proposal will then be reviewed and commented on by the community and Standard Names moderator.

[JonathanGregory]

Thanks, Lucy. This all looks good to me. For the last term, I would suggest adding some more text, explaining why model is in the standard name: "This standard name is intended for the output of models in which sea surface waves are not included in the velocity field. Hence the sea floor stress due to bottom friction excludes any contribution from the dissipation of sea surface waves. If that contribution to the sea floor stress is separately modelled, it can be given the standard name of sea_floor_horizontal_stress_due_to_sea_surface_waves." Would that be OK?

[bricheno]

yes - that sounds perfect - thanks for adding this clarification.