The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Warm Waters Under Arctic Ice a 'Ticking Time Bomb'
Scientists warn that a warm layer of salty ocean water accumulating 50 meters beneath the Arctic's Canadian Basin could potentially melt the region's sea-ice pack for much of the year if it reaches the surface.
The findings were published Thursday in the journal Science Advances by researchers from Yale University and Woods Hole Oceanographic Institution.
This "archived" heat is currently trapped under a surface layer of colder freshwater, but if the two layers mix, "there is enough heat to entirely melt the sea-ice pack that covers this region for most of the year," lead author Mary-Louise Timmermans, a professor of geology and geophysics at Yale University, told YaleNews.
The researchers discovered that the heat content of the warm, salty layer doubled from 200 to 400 million joules per square meter in the past 30 years.
The warming layer is "a ticking time bomb," the study's co-author John Toole of the Woods Hole Oceanographic Institution told CBC.
"That heat isn't going to go away," he added. "Eventually ... it's going have to come up to the surface and it's going to impact the ice."
Scientists believe the warm water is coming from the Chukchi Sea in the south, where ice cover has been rapidly melting and being exposed to the summer sun. Strong northerly winds are driving these warm waters north and flowing beneath the Canadian Basin.
The Canadian Basin is a major basin of the Arctic Ocean that's fed by waters from the North Chukchi Sea, just north of the Bering Strait between Alaska and Siberia.Mikenorton / Wikimedia Commons
"This means the effects of sea-ice loss are not limited to the ice-free regions themselves, but also lead to increased heat accumulation in the interior of the Arctic Ocean that can have climate effects well beyond the summer season," Timmermans explained.
The Arctic is warming at a rate twice as fast as the rest of the globe due to climate change. Earlier this month, The Guardian reported that the Arctic's thickest and oldest sea ice—also known as "the last ice area"—is breaking up for the first time on record. The breakage has opened up waters north of Greenland that are normally frozen-solid even in the peak of summer, a phenomenon that has been described as "scary."
EcoWatch Daily Newsletter
The Centers for Disease Control has emphasized that washing hands with soap and water is one of the most effective measures we can take in preventing the spread of COVID-19. However, millions of Americans in some of the most vulnerable communities face the prospect of having their water shut off during the lockdowns, according to The Guardian.
Aerial photos of the Sierra Nevada — the long mountain range stretching down the spine of California — showed rust-colored swathes following the state's record-breaking five-year drought that ended in 2016. The 100 million dead trees were one of the most visible examples of the ecological toll the drought had wrought.
Now, a few years later, we're starting to learn about how smaller, less noticeable species were affected.
Natthawat / Moment / Getty Images
Disinfectants and cleaners claiming to sanitize against the novel coronavirus have started to flood the market, raising concerns for the U.S. Environmental Protection Agency (EPA), which threatened legal recourse against retailers selling unregistered products, according to The New York Times.
The global coronavirus pandemic has thrown our daily routine into disarray. Billions are housebound, social contact is off-limits and an invisible virus makes up look at the outside world with suspicion. No surprise, then, that sustainability and the climate movement aren't exactly a priority for many these days.
By Molly Matthews Multedo
Livestock farming contributes to global warming, so eating less meat can be better for the climate.