Fibre-optics used to take the temperature of Greenland Ice Sheet

Scientists have used fibre-optic sensing to obtain the most detailed measurements of ice properties ever taken on the Greenland Ice Sheet. Their findings will be used to make more accurate models of the future movement of the world's second-largest ice sheet, as the effects of climate change continue to accelerate.

source https://www.sciencedaily.com/releases/2021/05/210515091119.htm