To the north , sahara is bordered by the atlas mountains and the mediterranean sea ; in the west by the atlantic ocean ; in the south , the desert zone reaches 16 ? northern latitude ; in the east it is bordered by the nile 撒哈拉沙漠北部以阿特拉斯山脉和地中海为界，西从大西洋沿岸开始，南部到达（北纬16度） ，苏丹和尼日尔河河谷，东部直抵红海， （尼罗河） 。
