JOU 
a(garu), a(geru), nobo(ru), ue 
() up () upward () to climb, to raise
joukyuu () advanced, high-grade
nobori esukare-ta- () the ascending escalator
tsukue ni agaru () go up onto the desk
uenokai () the floor above

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字