Figure 7.

Water mass fraction profile of the air in the MT (a) during inhalation when $t^{\ast }=1/4$ and (b) during exhalation when $t^{\ast }=3/4$. Results are shown as blue lines for the Arctic seal and as orange lines for the subtropical seal. The solid lines stand for Arctic temperature conditions, −30°C, and the dashed lines stand for 10°C. To see this figure in color, go online.