Quantcast
Environmental News for a Healthier Planet and Life

Melting Glaciers Causing 25 to 30% of Sea Level Rise

Climate
Columbia Glacier in Alaska; glaciers in Alaska are currently contributing the most of glaciers worldwide to sea level rise. David McNew / Getty Images

Glaciers may be melting faster than scientists thought, causing 25 to 30 percent of global sea level rise, according to comprehensive research published in Nature on Monday.


While previous studies had only assessed 500 glaciers, the new study looked at more than 19,000 glaciers using both satellite data and field visits, lead study author and University of Zurich glaciologist Michael Zemp told CNN. The researchers found that, between 1961 and 2016, the world's non-polar glaciers had lost around 9,000 billion tons of ice and contributed 27 millimeters to rising ocean levels. That's enough ice to turn the U.S. into an ice-rink four feet thick.

"Over 30 years suddenly almost all regions started losing mass at the same time," Zemp told the Associated Press. "That's clearly climate change if you look at the global picture."

The new report put the shrinkage rate for glaciers at 18 percent faster than that calculated by another international study in 2013. It found that glaciers are contributing as much ice melt to sea level rise as the Greenland ice sheet and more than the Antarctic ice sheet, National Geographic reported. In the 1960s, when the study period began, glaciers would melt in summer and regain mass in winter. But beginning around the 1980s, they began to lose more in the summer than they regained in winter, and by the 1990s, almost every glacier they studied was losing more than it could recuperate. Only glaciers in southwest Asia are not losing mass because of regional climate factors, the Associated Press reported.

"The drama is that it's increasingly negative," study co-author and University of Zurich geographer Frank Paul told National Geographic.

Today, glaciers lose about 335 billion tons of ice a year, the equivalent of one millimeter per year of sea level rise, according to a University of Zurich release.

"Globally, we lose about three times the ice volume stored in the entirety of the European Alps – every single year!" Zemp said.

Glaciers in Alaska contributed the most to sea level rise, while glaciers in Patagonia and the rest of the Arctic were also major contributors. Glaciers in the Alps, the Caucasus mountains and New Zealand were also shrinking fast, but were too small to contribute to sea level rise.

Glacier loss isn't just a problem for coastal areas, however. It could also be destructive for the communities that depend on them for drinking water.

"In Peru, they really are like water towers," Paul told National Geographic.

The study found that glaciers in Canada, the U.S., New Zealand and Europe could melt completely by 2100.

"Under current loss rates we are going to lose glaciers — basically all glaciers — in several mountain ranges," Zemp told CNN.

EcoWatch Daily Newsletter

A pangolin at a rescue center in Cambodia. Rhett A. Butler / Mongabay

By Malavika Vyawahare

China has banned the trade and consumption of wild animals in the wake of the coronavirus outbreak that has claimed more than 2,700 lives and infected more than 81,000 people, most of them in China, according to the state-run Xinhua News Agency.

Read More
A man carries plastic shopping bags in Times Square on May 5, 2018 in New York City. Kena Betancur / VIEWpress / Corbis / Getty Images

Nearly one year after New York became the second state in the nation to pass a ban on grocery store plastic bags — the law is going into effect on Sunday.

Read More
Sponsored
White gold man-made diamond solitaire engagement ring. Clean Origin

While keeping track of the new trends in the diamond industry can be hard, it is still an essential task of any savvy consumer or industry observer. Whether you are looking to catch a deal on your next diamond purchase or researching the pros and cons of an investment within the diamond industry, keeping up with the trends is imperative.

Read More
Rep. Alexandria Ocasio-Cortez (D-NY) (C) chants with housing and environmental advocates before a news conference to introduce legislation to transform public housing as part of her Green New Deal outside the U.S. Capitol Nov. 14, 2019 in Washington, DC. Chip Somodevilla / Getty Images

Rep. Alexandria Ocasio-Cortez (D-N.Y.) took to the floor of the House of Representatives yesterday to chide Republicans for not reading the Green New Deal, which she introduced over one year ago, as The Hill reported. She then read the entire 14-page document into the congressional record.

Read More
Anti Ivan Duque's demonstrator is seen holding a placard with the photos of social leader Alirio Sánchez Sánchez and the indigenous Hector Janer Latín, both killed in Cauca, Colombia during a protest against Ivan Duque visit in London which included a meeting about fracking, environmental issues, the peace process implementation, and questioning the risk that social leaders in Colombia face. Andres Pantoja / SOPA Images / LightRocket / Getty Images

Colombia was the most dangerous nation in 2019 to be an environmental activist and experts suspect that conditions will only get worse.

Read More