This September 2017 photo provided by researcher Brian Menounos shows the Klinaklini glacier in British Columbia, Canada. The glacier and the adjacent icefield has lost nearly 16 billion tons (14.5 billion metric tons) of snow and ice since 2000, with 10.7 billion tons of that (9.8 billion metric tons) of that since 2010, Menounos says. And the rate of loss accelerated over the last five years of the study. (Brian Menounos via AP)
By Seth Borenstein
Glaciers are melting faster, losing 31% more snow and ice per year than they did 15 years earlier, according to three-dimensional satellite measurements of all the world’s mountain glaciers.
Scientists blame human-caused climate change.
Using 20 years of recently declassified satellite data, scientists calculated that the world’s 220,000 mountain glaciers are losing more than 328 billion tons (298 billion metric tons) of ice and snow per year since 2015, according to a study in Wednesday’s journal Nature. That’s enough melt flowing into the world’s rising oceans to put Switzerland under almost 24 feet (7.2 meters) of water each year.
The annual melt rate from 2015 to 2019 is 78 billion more tons (71 billion metric tons) a year than it was from 2000 to 2004. Global thinning rates, different than volume of water lost, doubled in the last 20 years and “that’s enormous,” said Romain Hugonnet, a glaciologist at ETH Zurich and the University of Toulouse in France who led the study.
Half the world’s glacial loss is coming from the United States and Canada.
Alaska’s melt rates are “among the highest on the planet," with the Columbia glacier retreating about 115 feet (35 meters) a year, Hugonnet said.
Almost all the world’s glaciers are melting, even ones in Tibet that used to be stable, the study found. Except for a few in Iceland and Scandinavia that are fed by increased precipitation, the melt rates are accelerating around the world.
The near-uniform melting “mirrors the global increase in temperature” and is from the burning of coal, oil and gas, Hugonnet said. Some smaller glaciers are disappearing entirely. Two years ago, scientists, activists and government officials in Iceland held a funeral for a small glacier.
“Ten years ago, we were saying that the glaciers are the indicator of climate change, but now actually they’ve become a memorial of the climate crisis,” said World Glacier Monitoring Service Director Michael Zemp, who wasn’t part of the study.
The study is the first to use this 3D satellite imagery to examine all of Earth’s glaciers not connected to ice sheets in Greenland and Antarctic. Past studies either only used a fraction of the glaciers or estimated the loss of Earth’s glaciers using gravity measurements from orbit. Those gravity readings have large margins of error and aren't as useful, Zemp said.
Ohio State University’s Lonnie Thompson said the new study painted an “alarming picture."
Shrinking glaciers are a problem for millions of people who rely on seasonal glacial melt for daily water and rapid melting can cause deadly outbursts from glacial lakes in places like India, Hugonnet said.
But the largest threat is sea level rise. The world’s oceans are already rising because warm water expands and because of melting ice sheets in Greenland and Antarctica, but glaciers are responsible for 21% of sea level rise, more than the ice sheets, the study said. The ice sheets are larger longer term threats for sea level rise.
“It’s becoming increasingly clear that sea level rise is going to be a bigger and bigger problem as we move through the 21st century,” said National Snow and Ice Data Center Director Mark Serreze.
The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.
Energy Vault, the company developing sustainable, grid-scale energy storage solutions, is now trading on the New York Stock Exchange following the completion of its business combination with Novus Capital Corporation II. Energy Vault develops sustainable, grid-scale energy storage solutions designed to advance the transition to a carbon free, resilient power grid. Robert Piconi, co-founder and CEO of Energy Vault, joins Cheddar News' Closing Bell to disucss.
In an effort to fight climate change several corporations have vowed to work to fight climate change by 2030. They say the goal is to reduce carbon emissions by 40% or even close to 100%. However, according to a new study, many of these companies are not actually practicing what they preach. Tom Egger, senior lecturer at Emeritus at the University of Wisconsin, joins Cheddar News to discuss more.
At-home medical labs company Getlabs raised $20 million in a Series A round, led by Emerson Collective and the Minderoo Foundation. Getlabs aims to be the boots-on-the-ground partner to telehealth. The company says more than 70% of medical decisions still require collecting diagnostic tests in person, and that it fills that void by delivering health care directly to their patients' homes. Founder & CEO of Getlabs Kyle Michelson joined Cheddar News' Closing Bell to discuss.
Kalle Marsal, Chief Operating Officer at PetDx, joins Cheddar Innovates to discuss how next-generation sequencing technology is being used to detect cancer in pets early.
On this episode of Cheddar Innovates: WALDO CEO breaks down why now is a good time to make eyecare a priority, and how they are democratizing access to eyecare for all; COO at PetDx explains how next-generation sequencing technology is being used to detect cancer in pets early; Cheddar gets a look at Curiosity Stream's 'Inside The Mind of a Con Artist.'
Shares of Canadian cannabis giant Canopy Growth surged after the company reported Q3 earnings Wednesday morning, with shares up more than 15 percent at the close of the day's trading session. Despite net revenue declining year-over-year, Canopy beat analyst expectations and has ramped up efforts to develop a "THC ecosystem' in the U.S. Canopy Growth's CEO, David Klein, joined Cheddar News' Closing Bell to discuss the report. He noted that its brands Storz & Bickel vaporizers and BioSteel beverages showed record growth.
The Central Park Conservancy announced last month it has partnered with the Yale School of the Environment and the New York City-based Natural Areas Conservancy to study the on-the-ground impacts of climate change on urban parks. Salmaan Khan, Director of Research and Special Projects at the Central Park Conservancy joins Cheddar Climate to explain what factors put this initiative into motion and what data his team will be looking to uncover.
Energy Impact Partners is a VC firm committed to helping the world move toward a more sustainable future. The tech-focused fund aims to reach $350 million for its Deep Decarbonization Frontier Fund,' which aims to support early-stage companies working on innovative solutions. Energy Impact Partners' Managing Director Andy Lubershane joined Cheddar Climate to discuss.
Mukul Bakhshi, Chief of Strategy and Government Affairs for CGFNS International, joins Cheddar News to discuss strained U.S. hospitals seeking foreign nurses.
The Democratic governors of New Jersey, Connecticut, Delaware, and Oregon say they will lift mask requirements for schools in the coming weeks, reflecting a nationwide shift away from restrictions. Cheddar News speaks with internist Dr. Vivek Cherian whether it's safe to relax the regulation.
