Northward indicates a vector component which is positive when directed northward (negative southward). Downward indicates a vector component which is positive when directed downward (negative upward). Downward northward indicates the ZY component of a tensor. Momentum flux is dimensionally equivalent to stress and pressure. It is a tensor quantity. In accordance with common usage in geophysical disciplines
downward northward momentum flux in air due to diffusion
2019-01-14
2019-01-14