撒哈拉沙漠在 1980 年至 1990 年期间的扩张和收缩。

Expansion and contraction of the sahara desert from 1980 to 1990.

出版信息

Science. 1991 Jul 19;253(5017):299-300. doi: 10.1126/science.253.5017.299.

DOI:10.1126/science.253.5017.299

Abstract

Data from polar-orbiting meteorological satellites have been used to determine the extent of the Sahara Desert and to document its interannual variation from 1980 to 1990. The Sahara Desert ranged from 8,633,000 square kilometers in 1980 to 9,982,000 square kilometers in 1984. The greatest annual north-south latitudinal movement of the southern Saharan boundary was 110 kilometers from 1984 to 1985 and resulted in a decrease in desert area of 724,000 square kilometers.

摘要

利用极轨气象卫星资料确定了撒哈拉沙漠的范围，并记录了 1980 年至 1990 年期间该沙漠的年际变化。1980 年，撒哈拉沙漠的面积为 863.3 万平方公里，到 1984 年增加到 998.2 万平方公里。1984 年至 1985 年，南撒哈拉边界的最南北纬移动幅度最大，为 110 公里，导致沙漠面积减少了 72.4 万平方公里。