Glaciers on Mount Everest, source of major Asian rivers like Brahmaputra, have shrunk by 28 per cent over the past 40 years due to climate change. The glacial shrinkage area is compared to the measurements taken in the 1970s in the report released by the Chinese Academy of Sciences (CAS), Hunan University of Science and Technology, and Mount Qomolangma Snow Leopard Conservation Centre. The glacier area on the south slope of the world’s highest mountain, in Nepal, has decreased 26 per cent since the 1980s.

The report has pointed out that Mt Everest, known as Mount Qomolangma in Tibet, has been getting warmer for the past 50 years. At present, there are 1,476 glaciers in China’s Mt Qomolangma national nature reserve, covering 2,030 square kilometres. The shrinking glaciers have resulted in swelling glacial lakes and higher river levels downstream.

Remote sensing data showed that the area of a glacial lake in Mt Everest nature reserve increased from about 100 square kilometres in 1990 to 114 square kilometres in 2013. Mt Everest is the source of a number of major Asian rivers including Brahmaputra and Ganges. Earlier in May, a group of international researchers had warned that the estimated 5,500 glaciers in the Hindu Kush- Himalayan (HKH) region – site of many of the world’s tallest peaks including Mount Everest – could reduce their volume by 70-99 per cent by 2100, with dire consequences for farming and hydropower generation downstream.