Paul Weber, at the University of Portsmouth, spent ‘months and months’ painstakingly examining historical maps, photos and descriptions of glaciers in Norway from 1882–1916.
He found glaciers in Nordland, northern Norway, in 1899 covered about 1,712 square kilometres. By 2000, glaciers had retreated by 47 per cent, covering about 800 square kilometres.
His method of tracing glacial change might now serve as a blueprint for similar studies, which are useful for assessing the impact of global warming.
Image: https://gisuser.com
