to_direction_of_air_velocity_relative_to_sea_water

complete
Created: Oct. 29, 2020
Proposer: Nan Galbraith
Proposed Date: 2020-10-09
Change Date: Oct. 29, 2020, 12:14 p.m.
Term: wind_to_direction_relative_to_surface_current
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
Change Date: Oct. 29, 2020, 12:17 p.m.
Term: wind_to_direction_relative_to_surface_current
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
wind_to_direction_relative_to_surface_current is the relative direction of the wind compared to the surface current, based on northward_wind_relative_to_surface_current and eastward_wind_relative_to_surface_current. The surface called "surface" means the lower boundary of the atmosphere. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity"). 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. In meteorological reports, the direction of the wind vector is usually (but not always) given as the direction from which it is blowing ("wind_from_direction") (westerly, northerly, etc.). In other contexts, such as atmospheric modelling, it is often natural to give the direction in the usual manner of vectors as the heading or the direction to which it is blowing ("wind_to_direction") (eastward, southward, etc.).
Change Date: Oct. 30, 2020, 1:16 p.m.
Term: anticlockwise_angle_of_rotation_from_direction_of_sea_water_velocity_to_wind_direction
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
The angle between the direction of the near-surface wind and that of the near-surface current, normally derived from vectors. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. A vertical coordinate variable or scalar coordinate with standard name "depth" should be used to indicate the depth of sea water velocity used in the calculation. Similarly, a vertical coordinate variable or scalar coordinate with standard name "height" should be used to indicate the height of the the wind component.
Change Date: Oct. 30, 2020, 1:17 p.m.
Term: anticlockwise_angle_of_rotation_from_direction_of_sea_water_velocity_to_wind_direction
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
The angle between the direction of the near-surface wind and that of the near-surface current, normally derived from vectors. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity"). A vertical coordinate variable or scalar coordinate with standard name "depth" should be used to indicate the depth of sea water velocity used in the calculation. Similarly, a vertical coordinate variable or scalar coordinate with standard name "height" should be used to indicate the height of the the wind component.
Change Date: Oct. 30, 2020, 1:22 p.m.
Term: anticlockwise_angle_of_rotation_from_direction_of_sea_water_velocity_to_wind_direction
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
The angle between the direction of the near-surface wind and that of the near-surface current, normally derived from vectors. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity"). A vertical coordinate variable or scalar coordinate variable with standard name "depth" should be used to indicate the depth of sea water velocity used in the calculation. Similarly, a vertical coordinate variable or scalar coordinate with standard name "height" should be used to indicate the height of the the wind component.
Change Date: Nov. 4, 2020, 2:51 a.m.
Term: wind_to_direction_wrt_sea_water
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
The quantity with standard name wind_to_direction_wrt_sea_water is the direction towards which the relative velocity vector of wind and sea water is headed. 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 abbreviation "wrt" means with respect to. The components of the relative velocity vector have standard names difference_between_eastward_wind_and_eastward_sea_water_velocity and difference_between_northward_wind_and_northward_sea_water_velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity"). A vertical coordinate variable or scalar coordinate variable with standard name "depth" should be used to indicate the depth of sea water velocity used in the calculation. Similarly, a vertical coordinate variable or scalar coordinate with standard name "height" should be used to indicate the height of the the wind component
Change Date: Jan. 7, 2021, 12:57 p.m.
Term: to_direction_of_air_velocity_relative_to_sea_water
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
The quantity with standard name wind_to_direction_wrt_sea_water is the direction towards which the relative velocity vector of wind and sea water is headed. 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 abbreviation "wrt" means with respect to. The components of the relative velocity vector have standard names difference_between_eastward_wind_and_eastward_sea_water_velocity and difference_between_northward_wind_and_northward_sea_water_velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity"). A vertical coordinate variable or scalar coordinate variable with standard name "depth" should be used to indicate the depth of sea water velocity used in the calculation. Similarly, a vertical coordinate variable or scalar coordinate with standard name "height" should be used to indicate the height of the the wind component
Change Date: Jan. 7, 2021, 1:02 p.m.
Term: to_direction_of_air_velocity_relative_to_sea_water
Unit: degree
Unit ref: UAAA
AMIP:
GRIB:
The quantity with standard name to_direction_of_air_velocity_relative_to_sea_water is the difference between the direction of motion of the air and the near-surface current. 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 components of the relative velocity vector have standard names eastward_air_velocity_relative_to_sea_water and northward_air_velocity_relative_to_sea_water. A vertical coordinate variable or scalar coordinate variable with standard name "depth" should be used to indicate the depth of sea water velocity used in the calculation. Similarly, a vertical coordinate variable or scalar coordinate with standard name "height" should be used to indicate the height of the the wind component.