# 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
