This Sept. 22, 2018 file photo shows the Baishui Glacier No.1 on the Jade Dragon Snow Mountain in the southern province of Yunnan in China. It has lost 60 percent of its mass and shrunk 250 meters since 1982. (AP Photo/Sam McNeil)

Global warming is shrinking glaciers faster than thought

The world’s glaciers are shrinking five times faster now than they were in the 1960s

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.

The most comprehensive measurement of glaciers worldwide found that thousands of inland masses of snow compressed into ice are shrinking 18 per cent faster than an international panel of scientists calculated in 2013.

The world’s glaciers are shrinking five times faster now than they were in the 1960s. Their melt is accelerating due to global warming, and adding more water to already rising seas, the study found.

“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.”

READ MORE: Canada heating up faster than rest of world: Report

The glaciers shrinking fastest are in central Europe, the Caucasus region, western Canada, the U.S. Lower 48 states, New Zealand and near the tropics. Glaciers in these places on average are losing more than 1 per cent of their mass each year, according to a study in Monday’s journal Nature .

“In these regions, at the current glacier loss rate, the glaciers will not survive the century,” Zemp said.

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.

Since 1961, the world has lost 10.6 trillion tons of ice and snow (9.6 trillion metric tons), the study found. Melted, that’s enough to cover the lower 48 U.S. states in about 4 feet of water.

Scientists have known for a long time that global warming caused by human activities like burning coal, gasoline and diesel for electricity and transportation is making Earth lose its ice. They have been especially concerned with the large ice sheets covering Greenland and Antarctica.

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, Colorado, who wasn’t part of the study. “The influence of glaciers on sea level is bigger than we thought.”

READ MORE: Scientists think B.C.’s volcanoes hold the key to understanding its climate

A number of factors are making sea levels rise. The biggest cause is that oceans are getting warmer, which makes water expand. The new figures show glacier melt is a bigger contributor than thought, responsible for about 25% to 30% of the yearly rise in oceans, Zemp said.

Rising seas threaten coastal cities around the world and put more people at risk of flooding during storms.

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.

While people think of glaciers as polar issues, shrinking mountain glaciers closer to the equator can cause serious problems for people who depend on them, said Twila Moon, a snow and ice data centre scientist who also wasn’t part of the study. She said people in the Andes, for example, rely on the glaciers for drinking and irrigation water each summer.

A separate study Monday in Environmental Research Letters confirmed faster melting and other changes in the Arctic. It found that in winter, the Arctic is warming 2.8 times faster than the rest of the Northern Hemisphere. Overall, the region is getting more humid, cloudier and wetter.

“It’s on steroids, it’s hyperactive,” said lead author Jason Box, a scientist for the Danish Meteorological Institute.

__

Seth Borenstein, The Associated Press

Like us on Facebook and follow us on Twitter.

Just Posted

Nelson contributes $5,000 in kind to Rosemont inter-generational park

Natural playground, benches and paved walkways will attract seniors and kids at Art Gibbon Park

Cannabis outlet requests to take over MMJ Canada location

Quadz Cannabis has applied for a licence from the city

Gas venting from tanker at Castlegar rail yard posed no danger: officials

Argon gas discharged from a CP tanker car on Friday, April 19.

PHOTOS: Nelson kids clean up Easter mess

Coloured eggs were strewn across Lakeside Park

PHOTOS: Nelson goes green for Earth Day

Environment friendly initiatives were promoted at the annual event

VIDEO: Nelson students paint Parachutes for the Planet

The youth-led initiative lobbies governments for climate change action

WATCH: South Vancouver Island shooting an ‘isolated and targeted’ incident, say police

One person in custody, another fled following shooting and crash on West Shore

Woe, Canada: Bruins down Maple Leafs 5-1 in Game 7

No Canadian teams left in Stanley Cup playoffs

Defence accuses officer of ‘incompetence’ in trial for B.C. man accused in daughters’ murder

Double murder trial for the Victoria father accused of killing his two young daughters continues

Should B.C. parents receive money if they make sure their kids are vaccinated?

New survey looks at public opinion around government’s role in forcing immunizations

B.C. men challenge constitutionality of Canada’s secret no-fly list

Parvkar Singh Dulai says he received a “denial of boarding” notification under the no-fly program last May 17

Murder on B.C. property didn’t need to be disclosed before sale, court rules

Buyer had tried to break contract after learning a man with ties to crime had been murdered there

B.C.’s largest Vaisakhi festival target of threatening Facebook post: Surrey RCMP

Police say they are investigating the posts on Facebook, after local MLA forwarded screenshots

Pug life: B.C. town boasts waggish list of dog names

Freedom-of-information request lists most ‘pupular’ dog names registered in White Rock

Most Read