Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=1.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=2.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=2.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=3.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=3.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=4.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=4.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=5.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=5.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=6.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=6.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=7.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=7.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=8.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=8.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=9.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=9.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=10.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=10.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=11.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=11.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=12.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=13.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=13.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=13.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=14.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=14.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=15.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=15.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=16.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=16.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=16.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=17.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=17.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=18.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=19.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=19.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=20.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=20.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=20.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=21.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=21.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=41.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=45.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=50.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=54.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=59.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=63.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=68.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=72.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=77.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=81.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=85.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=90.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=94.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=99.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=103.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=108.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=112.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=117.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=121.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=125.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=130.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=134.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=139.3 hours)

Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=1.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=2.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=2.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=3.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=3.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=4.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=4.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=5.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=5.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=6.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=6.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=7.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=7.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=8.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=8.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=9.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=9.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=10.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=10.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=11.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=11.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=12.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=13.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=13.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=13.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=14.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=14.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=15.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=15.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=16.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=16.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=16.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=17.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=17.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=18.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=19.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=19.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=20.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=20.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=20.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=21.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=21.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=41.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=45.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=50.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=54.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=59.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=63.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=68.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=72.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=77.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=81.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=85.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=90.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=94.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=99.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=103.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=108.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=112.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=117.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=121.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=125.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=130.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=134.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (12.5 wt.% MgCl2) (t=139.3 hours)

Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=1.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=2.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=2.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=3.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=3.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=4.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=4.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=5.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=5.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=6.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=6.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=7.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=7.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=8.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=8.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=9.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=9.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=10.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=10.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=11.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=11.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=12.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=13.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=13.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=13.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=14.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=14.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=15.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=15.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=16.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=16.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=16.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=17.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=17.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=18.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=19.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=19.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=20.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=20.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=20.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=21.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=21.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=41.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=45.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=50.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=54.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=59.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=63.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=68.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=72.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=77.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=81.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=85.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=90.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=94.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=99.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=103.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=108.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=112.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=117.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=121.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=125.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=130.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=134.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (25 wt.% MgCl2) (t=139.3 hours)

Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=1.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=2.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=2.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=3.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=3.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=4.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=4.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=5.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=5.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=6.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=6.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=7.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=7.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=8.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=8.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=9.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=9.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=10.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=10.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=11.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=11.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=12.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=13.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=13.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=13.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=14.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=14.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=15.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=15.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=16.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=16.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=16.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=17.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=17.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=18.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=19.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=19.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=20.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=20.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=20.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=21.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=21.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=41.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=45.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=50.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=54.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=59.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=63.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=68.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=72.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=77.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=81.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=85.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=90.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=94.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=99.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=103.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=108.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=112.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=117.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=121.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=125.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=130.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=134.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (33 wt.% MgCl2) (t=139.3 hours)