Sublimation

Once the maximum amount of sublimation/soil evaporation for the day is calculated, SWAT+ will first remove water from the snow pack to meet the evaporative demand. If the water content of the snow pack is greater than the maximum sublimation/soil evaporation demand, then

$E_{sub}=E'_s$ 2:2.3.10

$SNO_{(f)}=SNO_{(i)}-E'_s$ 2:2.3.11

$E''_s=0.$ 2:2.3.12

where $E_{sub}$ is the amount of sublimation on a given day (mm H$_2$O), $E'_s$ is the maximum sublimation/soil evaporation adjusted for plant water use on a given day (mm H$_2$O), $SNO_{(i)}$ is the amount of water in the snow pack on a given day prior to accounting for sublimation (mm H$_2$O), $SNO_{(f)}$ is the amount of water in the snow pack on a given day after accounting for sublimation (mm H$_2$O), and $E''_s$ is the maximum soil water evaporation on a given day (mm H$_2$O). If the water content of the snow pack is less than the maximum sublimation/soil evaporation demand, then

$E_{sub}=SNO_{(i)}$ 2:2.3.13

$SNO_{(f)}=0.$ 2:2.3.14

$E''_s=E'_s-E_{sub}$ 2:2.3.15