Term: Northward Reynolds stress from orographic gravity wave parameterization

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tauvogw, for the vertical flux of meridional momentum within the orographic GW parameterization.

Term: upward_northward_momentum_flux_in_air_due_to_orographic_gravity_waves

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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. "Upward" indicates a vector component which is positive when directed upward (negative downward). "Northward" indicates a vector component which is positive when directed northward (negative southward). "Upward northward" indicates the -ZX component of a tensor. An upward northward momentum flux is an upward flux of northward momentum, which accelerates the upper medium northward and the lower medium southward. Momentum flux is dimensionally equivalent to stress and pressure. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The total upward northward momentum flux due to gravity waves is the sum of the fluxes due to orographic gravity waves and nonorographic waves. The latter has the standard name upward_northward_momentum_flux_in_air_due_to_nonorographic_gravity_waves.