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Science News
Feb. 11, 2019 / 2:55 PM

Study: Greenland could sell its sand, profit from melting glaciers

"With this work, we present a rare example of economic opportunity brought to life by climate change," researcher Irina Overeem said.

By
Brooks Hays
As the Greenland Ice Sheet melt rates accelerate, its meltwater rivers will deliver more sand to the coast -- sand that could be extracted and sold for profit. Photo by Nicolaj Krog Larsen/CU Boulder

Feb. 11 (UPI) -- As Greenland's glaciers continue to melt at an accelerated pace, meltwater rivers are depositing more and more sediment along the island's coast. If the trend continues, as most climate scientists predict, Greenland could stand to profit from warming temperatures by selling its excess sand.

"Eight percent of the annual sediment contribution delivered to the global oceans comes from the Greenland Ice Sheet and with continued global warming, this number is expected to increase," Mette Bendixen, a researcher at the University of Colorado, Boulder's Institute of Arctic and Alpine Research, said in a news release.

Like Greenland's glaciers, the island's economy -- mostly based around commercial fishing -- is increasingly vulnerable. Selling excess sand could provide local communities an economic lifeline, according to a new study published in the journal Nature Sustainability.

Despite efforts to diversify its economy, including forays into mining, oil extraction and tourism, unemployment remains high and many of its local governments are cash-strapped.

RELATED Baffin Island landscapes ice-free for first time in 40,000 years

Meanwhile, the planet's sand reserves are shrinking as urban development booms and major infrastructure projects break ground across Asia, Africa and South America.

Scientists analyzed sand deposits along the Greenland coast to estimate how much the island nation might stand to profit should they enter the sediment market. Researchers predict annual sand deposits delivered by melting glaciers could be worth nearly half the island's annual GDP, which was $2.2 billion in 2015. Sand prices are expected to double over the next quarter-century.

"With this work, we present a rare example of economic opportunity brought to life by climate change," said Irina Overeem, a CU Boulder associate professor and research fellow at INSTAAR.

RELATED Greenland's ice is melting four times faster than it was in 2003

Of course, natural resource extraction efforts can damage local ecosystems. Researchers advise comprehensive environmental impact assessments be conducted before any sand extraction efforts get underway.

"If Greenland is to benefit from sand extraction, we must raise awareness about the resource both locally and globally," said Minik Rosing, a professor at the University of Copenhagen's Natural History Museum of Denmark. "The Greenlandic people must be part of this. Greenland has rigorous resource legislation and authorities and industry must collaborate to minimize potential negative impacts of extraction on the environment."

RELATED Greenland ice melting faster than previously thought: study
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