Earth's glaciers are melting much faster than scientists thought: A new study shows they are losing 369 billion tons of snow and ice each year, more than half of that in North America.
Baishui Glacier No. 1 on the Jade Dragon Snow Mountain in the southern province of Yunnan, China, in September 2018. Scientists say it is one of the fastest melting glaciers in the world.
"Over 30 years suddenly almost all regions started losing mass at the same time," said lead author Michael Zemp, director of the World Glacier Monitoring Service at the University of Zurich."That's clearly climate change if you look at the global picture." Zemp's team used ground and satellite measurements to look at 19,000 glaciers, far more than previous studies. They determined that southwestern Asia is the only region of 19 where glaciers are not shrinking, which Zemp said is due to local climate conditions.
This study"is telling us there's much more to the story," said Mark Serreze, director of the National Snow and Ice Data Center in Boulder, Colo., who wasn't part of the study."The influence of glaciers on sea level is bigger than we thought." Glaciers grow in winter and shrink in summer, but as the Earth has warmed, they are growing less and shrinking more. Zemp said warmer summer temperatures are the main reason glaciers are shrinking faster.
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