This movement of moisture into and out of hair is called moisture flux. (livingproof.com)
They found globally averaged differences between the current and the natural landscape of 1.2 mm day − 1 for precipitation and 0.6 mm day − 1 for moisture flux. (nap.edu)
The total implied dynamic change, which results from stationary - eddy circulation changes and transient - eddy moisture flux changes, is negative at most latitudes. (climate-dynamics.org)