Composite ASTER image showing retreat of the Gangotri Glacier terminus in the Garhwal Himalaya since 1780. Glacier retreat boundaries courtesy of the Land Processes Distributed Active Archive Center. NSIDC

By Staff Writers
Kathmandu (AFP) Dec 6, 2009 More than a billion people in Asia depend on Himalayan glaciers for water, but experts say they are melting at an alarming rate, threatening to bring drought to large swathes of the continent. Glaciers in the Himalayas, a 2,400-kilometre (1,500-mile) range that sweeps through Pakistan, India, China, Nepal and Bhutan, provide headwaters for Asia’s nine largest rivers, lifelines for the 1.3 billion people who live downstream. But temperatures in the region have increased by between 0.15 and 0.6 degrees Celsius (0.27 and 1.08 degrees Fahrenheit) each decade for the last 30 years, dramatically accelerating the rate at which glaciers are shrinking. … In Nepal and Bhutan, the receding glaciers have formed vast lakes that threaten to burst, devastating villages downstream. … In China, studies have shown that the rapid melting of the glaciers will result in an increase in flooding in the short term, state news agency Xinhua has reported. In the longer term, it said, the continued retreat of glaciers would lead to a gradual decrease in river flows, severely affecting large parts of western China. …

Melting Himalayan glaciers threaten 1.3 billion Asians