▁first ▁of ▁which , ▁Swiss ▁Camp , ▁he ▁established ▁in ▁ 1 9 9 0 . ▁He ▁has ▁argued ▁that ▁due ▁to ▁this ▁ice ▁sheet ▁mel ting ▁faster ▁than ▁anticip ated , ▁sea ▁levels ▁could ▁rise ▁by ▁about ▁ 3 ▁feet ▁by ▁ 2 1 0 0 , ▁consider ably ▁higher ▁than ▁the ▁IP CC ' s ▁upper ▁limit ▁of ▁, ▁and ▁that ▁Green land ▁might ▁lose ▁all ▁its ▁ice ▁in ▁ 1 0 , 0 0 0 ▁years , ▁but ▁Ant arct ica ▁would ▁take ▁consider ably ▁longer , ▁since ▁it ▁is ▁so ▁much ▁bigger . ▁ ▁Education ▁Ste ffen ▁attended ▁E TH ▁Zur ich , ▁from ▁which ▁he ▁received ▁a ▁Doctor ▁of ▁Science ▁degree ▁in ▁ 1 9 7 7 ▁and ▁a ▁Diplom ▁in ▁ 1 9 8 3 . ▁ ▁Career ▁Ste ffen ▁was ▁an ▁associate ▁professor ▁of ▁ge ography ▁at ▁the ▁University ▁of ▁Colorado ▁B ould er ▁from ▁ 1 9 9 1 ▁to ▁ 1 9 9 7 , ▁where up on ▁he ▁became ▁a ▁full ▁professor ▁there . ▁Since ▁July ▁ 1 , ▁ 2 0 1 2 , ▁he ▁has ▁been ▁director ▁of ▁the ▁Swiss ▁Federal ▁Institute ▁for ▁Forest , ▁Snow ▁and ▁Land s cape ▁Research . ▁He ▁was ▁a ▁lead ▁author ▁of ▁the ▁" Ob serv ations : ▁Cry os phere " ▁chapter ▁of ▁the ▁IP CC ▁AR 5 , ▁released ▁in ▁ 2 0 1 3 . ▁ ▁Awards ▁ ▁In ▁October ▁ 2 0 1 7 , ▁Ste ffen ▁received ▁the ▁Low ell