The accelerating losses indicate a “devastating” future for the region, upon which a billion people depend for regular water. The scientists combined declassified US spy satellite images from the mid-1970s with modern satellite data to create the first detailed, four-decade record of ice along the 2,000km (1,200-mile) mountain chain.
The analysis shows that 8bn tonnes of ice are being lost every year and not replaced by snow, with the lower level glaciers shrinking in height by 5 meters annually. The study shows that only global heating caused by human activities can explain the heavy melting. In previous work, local weather and the impact of air pollution had complicated the picture.
