Term: northward_friction_velocity

Unit: m s-1

Unit ref: UVAA

AMIP:

GRIB:

A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). Friction velocity is a reference wind velocity derived from the relationship between air density and downward stress and is usually applied at a level close to the surface where stress is assumed to independent of height and approximately proportional to the square of mean velocity.

Term: northward_friction_velocity_in_air

Unit: m s-1

Unit ref: UVAA

AMIP:

GRIB:

A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). Friction velocity is a reference wind velocity derived from the relationship between air density and downward stress and is usually applied at a level close to the surface where stress is assumed to independent of height and approximately proportional to the square of mean velocity.