. "'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, 'flux' implies per unit area, called 'flux density' in physics."@en . . . "SDN:P07::CFSN0693" . . "2006-09-26 18:12:43.0" . "1" . "SDN:P07::CFSN0693" . "downward_northward_momentum_flux_in_air"@en . . "SDN:P07::CFSN0693" . "accepted"@en . . "1" . "2006-09-26 18:12:43.0" . "" . "false" .