Advances in satellite technology have revealed that the world's glaciers contain significantly less ice than previously thought, according to a study published in Nature Geoscience on Monday.
But, "we've had quite a poor understanding of how much ice is actually stored in glaciers," said lead study author Romain Millan, a glaciologist at Université Grenoble Alpes. Past analyses, for example, double-counted glaciers along the peripheries of the Greenland and Antarctic ice sheets, overestimating ice volume.
High-resolution satellites deployed in recent years, however, allowed for the first analysis of how 98% of the world's glaciers are moving, "from small glaciers in the Andes up to massive glaciers in Svalbard and Patagonia," said Millan. "This is one of the first really impressive results coming out" from satellite advances, said Daniel Farinotti, a glaciologist at ETH Zurich not involved in the research.
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